Abstract: This
applica
TIon no
te discusses the differences between the
DS2155 T1/E1/J1 Single Chip Transceiver and the DS26502 T1/E1/J1/64KCC Bits Element register maps.
The DS26502 is a T1/E1/J1/64kHz Composite Clock Bits Element that also funcTIons as a reduced-feature-set SCT. As it was loosely based on the DS2155 SCT, the memory map and register set have many si
milariTIes to the DS2155, making it fairly easy to migrate exisTIng DS2155 software drivers to the DS26502. However some changes will be necessary because of
added features, removed features and general changes to the memory map and register set.
IntroductionThis application note discusses the differences between the DS2155 T1/E1/J1 Single Chip Transceiver and the DS26502 T1/E1/J1/64KCC Bits Element register maps. The DS26502 is a T1/E1/J1/64kHz Composite Clock Bits Element that also functions as a reduced -feature-set SCT. As it was loosely based on the DS2155 SCT, the memory map and register set have many similarities to the DS2155, making it fairly easy to migrate existing DS2155 software drivers to the DS26502. However some changes will be necessary because of added features, removed features, and general changes to the memory map and register set.
Please consult the latest datasheets for detai
led register locations and bit descriptions.
Direct Register Map
pingThe following registe
rs may be directly mapped from the DS2155 to the DS26502. The bit locations and functionality for each of these registers has not changed.
Table 1. Direct Register Mapping
DS26502
DS2155
DS26502 Register Description
Address
Name
Address
Name
03
T1RCR1
03
T1RCR1
T1 Receive Control Register 1
1F
BOCC
37
BOCC
BOC Control Register
30
LIC1
78
LIC1
Line Interface Control Register 1
40
TAF
D0
TAF
Transmit Align Frame Register
41
TNAF
D1
TNAF
Transmit Nonalign Frame Register
42
TsiAF
D2
TsiAF
Transmit Si Align Frame
43
TSiNAF
D3
TSiNAF
Transmit Si Nonalign Frame
44
TRA
D4
TRA
Transmit Remote Alarm Bits
45
TSa4
D5
TSa4
Transmit Sa4 Bits
46
TSa5
D6
TSa5
Transmit Sa5 Bits
47
TSa6
D7
TSa6
Transmit Sa6 Bits
48
TSa7
D8
TSa7
Transmit Sa7 Bits
49
TSa8
D9
TSa8
Transmit Sa8 Bits
4A
TSACR
DA
TSACR
Transmit Sa Bit Control Register
50
RFDL
C0
RFDL
Receive FDL Register
51
TFDL
C1
TFDL
Transmit FDL Register
52
RFDLM1
C2
RFDLM1
Receive Facility Data Link Match Register 1
53
RFDLM2
C3
RFDLM2
Receive Facility Data Link Match Register 2
56
RAF
C6
RAF
Receive Align Frame Register
57
RNAF
C7
RNAF
Receive Nonalign Frame Register
58
RSiAF
C8
RSiAF
Receive Si Align Frame
59
RSiNAF
C9
RSiNAF
Receive Si Nonalign Frame
5A
RRA
CA
RRA
Receive Remote Alarm Bits
5B
RSa4
CB
RSa4
Receive Sa4 Bits
5C
RSa5
CC
RSa5
Receive Sa5 Bits
5D
RSa6
CD
RSa6
Receive Sa6 Bits
5E
RSa7
CE
RSa7
Receive Sa7 Bits
5F
RSa8
CF
RSa8
Receive Sa8 Bits
F0
TEST1
F0
TEST1
Test Register 1 - For Factory Use Only
F1
TEST2
F1
TEST2
Test Register 2- For Factory Use Only
F2
TEST3
F2
TEST3
Test Register 3 - For Factory Use Only
F3
TEST4
F3
TEST4
Test Register 4 - For Factory Use Only
F4
TEST5
F4
TEST5
Test Register 5 - For Factory Use Only
F5
TEST6
F5
TEST6
Test Register 6 - For Factory Use Only
F6
TEST7
F6
TEST7
Test Register 7 - For Factory Use Only
F7
TEST8
F7
TEST8
Test Register 8 - For Factory Use Only
F8
TEST9
F8
TEST9
Test Register 9 - For Factory Use Only
F9
TEST10
F9
TEST10
Test Register 10 - For Factory Use Only
FA
TEST11
FA
TEST11
Test Register 11 - For Factory Use Only
FB
TEST12
FB
TEST12
Test Register 12 - For Factory Use Only
FC
TEST13
FC
TEST13
Test Register 13 - For Factory Use Only
FD
TEST14
FD
TEST14
Test Register 14 - For Factory Use Only
FE
TEST15
FE
TEST15
Test Register 15 - For Factory Use Only
FF
TEST16
FF
TEST16
Test Register 16 - For Factory Use Only
Modified RegistersThe following registers exist in the DS2155 and the DS26502. However, register addresses, bit names, functionality or location may have changed. The following table shows the register contents for each register that had changes. Please refer to the DS26502 datasheet for a complete register and bit description. The most recent DS26502 datasheet
can be found at www.maxim-ic.com.
Table 2. Modified Registers
Address
Bit
DS26502
DS2155
DS26502 Register Description
TSTRREG
MSTRREG
00
0
SFTRST
SFTRST
Test Reset Register
1
-
T1/E1
2
-
TEST0
3
-
TEST1
4
TEST0
-
5
TEST1
-
6
-
-
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
IOCR1
IOCR1
01
0
ODF
ODF
1
TSIO
TSIO
2
TSM
TSM
3
CSM_TSDW
TSDW
4
RLOFF
RSIO
5
RSMS1
RSMS1
6
RSMS2
RSMS2
7
G703TE
RSMS
Address
Bit
DS26502
DS2155
DS26502 Register Description
IOCR2
IOCR2
02
0
RPCOE
RSCLKM
I/O Configuration Register 2
1
TPCOE
TSCLKM
2
-
H100EN
3
-
TSSYNCINV
4
TS_8K_4INV
TSYNCINV
5
RS_8KINV
RSYNCINV
6
TCLKINV
TCLKINV
7
RCLKINV
RCLKINV
Address
Bit
DS26502
DS2155
DS26502 Register Description
T1RCR2
T1RCR2
04
0
RD4YM
RD4YM
T1 Receive Control Register 2
1
RJC
RJC
2
-
RZBTSI
3
-
RZSE
4
-
RSLC96
5
RB8ZS
RB8ZS
6
-
RFM
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
T1TCR1
T1TCR1
05
0
TYEL
TYEL
T1 Transmit Control Register 1
1
-
TBL
2
-
TFDLS
3
-
GB7S
4
-
TSSE
5
TCPT
TCPT
6
TFPT
TFPT
7
TJC
TJC
Address
Bit
DS26502
DS2155
DS26502 Register Description
T1TCR2
T1TCR2
06
0
TB7ZS
TB7ZS
T1 Transmit Control Register 2
1
-
TZBTSI
2
TD4YM
TD4YM
3
FBCT1
FBCT1
4
FBCT2
FBCT2
5
-
TZSE
6
TFSE
TSLC96
7
TB8ZS
TB8ZS
Address
Bit
DS26502
DS2155
DS26502 Register Description
T1CCR
T1CCR
07
0
-
TLOOP
T1 Common Control Register
1
PDE
PDE
2
-
TFM
3
TAIS-CI
TAIS-CI
4
TRAI-CI
TRAI-CI
5
-
-
6
-
-
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
IDR
IDR
10
1F
0
N
N
Device Identification Register - The lower four bits will display the die revision.
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
N
N
2
N
N
3
N
N
4
0
0
5
0
0
6
0
1
7
0
1
Address
Bit
DS26502
DS2155
DS26502 Register Description
INFO1
INFO1
11
10
0
RL0
FBE
Information Register 1
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RL1
B8ZS
2
RL2
SEFE
3
RL3
16ZD
4
-
8ZD
5
-
COFA
6
-
TPDV
7
-
RPDV
Address
Bit
DS26502
DS2155
DS26502 Register Description
INFO2
INFO2
12
11
0
CASRC
RL0
Information Register 2
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155. The DS26502 INFO2 register is identical to the DS2155 INFO3 register located at Address 12h.
1
FASRC
RL1
2
CRCRC
RL2
3
-
RL3
4
-
TOCD
5
-
TCLE
6
-
BD
7
-
BSYNC
Address
Bit
DS26502
DS2155
DS26502 Register Description
IIR
IIR1
13
14
0
SR1
SR1
Interrupt Information Register
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
SR2
SR2
2
SR3
SR3
3
SR4
SR4
4
-
SR5
5
-
SR6
6
-
SR7
7
-
SR8
Address
Bit
DS26502
DS2155
DS26502 Register Description
SR1
SR1
14
16
0
-
LOLITC
Status Register 1
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
TOCD
TOCD
2
TCLE
TCLE
3
-
LRCL
4
JALT
JALT
5
-
RSCOS
6
-
TIMER
7
-
ILUT
Address
Bit
DS26502
DS2155
DS26502 Register Description
IMR1
IMR1
15
17
0
-
LOLITC
Interrupt Mask Register 1
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
TOCD
TOCD
2
TCLE
TCLE
3
-
LRCL
4
JALT
JALT
5
-
RSCOS
6
-
TIMER
7
-
ILUT
Address
Bit
DS26502
DS2155
DS26502 Register Description
SR2
SR2
16
18
0
RLOF
RLOS
Status Register 2
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RLOS
FRCL
2
RAIS
RUA1
3
RYEL
RYEL
4
RLOFC
RLOSC
5
RLOSC
FRCLC
6
RAISC
RUA1C
7
RYELC
RYELC
Address
Bit
DS26502
DS2155
DS26502 Register Description
IMR2
IMR2
17
19
0
RLOF
RLOS
Interrupt Mask Register 2
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RLOS
FRCL
2
RAIS
RUA1
3
RYEL
RYEL
4
RLOFC
RLOSC
5
RLOSC
FRCLC
6
RAISC
RUA1C
7
RYELC
RYELC
Address
Bit
DS26502
DS2155
DS26502 Register Description
SR3
SR3
18
1A
0
RBOC
RRA
Status Register 3
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RMTCH
RDMA
2
TFDLE
V52LNK
3
RFDLF
LORC
4
RFDLAD
LOTC
5
BOCC
LUP
6
LOTC
LDN
7
-
LSPARE
Address
Bit
DS26502
DS2155
DS26502 Register Description
IMR3
IMR3
19
1B
0
RBOC
RRA
Interrupt Mask Register 3
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RMTCH
RDMA
2
TFDLE
V52LNK
3
RFDLF
LORC
4
RFDLAD
LOTC
5
BOCC
LUP
6
LOTC
LDN
7
-
LSPARE
Address
Bit
DS26502
DS2155
DS26502 Register Description
SR4
SR4
1A
1C
0
RAF
RAF
Status Register 4
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RCMF
RCMF
2
RMF
RMF
3
TAF
TAF
4
TMF
TMF
5
RSA0
RSAZ
6
RSA1
RSAO
7
RAIS-CI
RAIS-CI
Address
Bit
DS26502
DS2155
DS26502 Register Description
IMR4
IMR4
1B
1D
0
RAF
RAF
Interrupt Mask Register 4
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RCMF
RCMF
2
RMF
RMF
3
TAF
TAF
4
TMF
TMF
5
RSA0
RSAZ
6
RSA1
RSAO
7
-
RAIS-CI
Address
Bit
DS26502
DS2155
DS26502 Register Description
INFO3
INFO3
1C
12
0
CRC4SA
CASRC
Information Register 3
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
CASSA
FASRC
2
FASSA
CRCRC
3
CSC0
-
4
CSC2
-
5
CSC3
-
6
CSC4
-
7
CSC5
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
E1RCR
E1RCR1
1D
33
0
RESYNC
RESYNC
E1 Receive Control Register
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
SYNCE
SYNCE
2
FRC
FRC
3
-
RCRC4
4
-
RG802
5
RHDB3
RHDB3
6
RLOSA
RSIGM
7
-
RSERC
Address
Bit
DS26502
DS2155
DS26502 Register Description
E1TCR
E1TCR1
1E
35
0
AAIS
TCRC4
E1 Transmit Control Register
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
THDB3
TG802
2
-
THDB3
3
AEBE
TSA1
4
TSiS
TSiS
5
ARA
TUA1
6
-
T16S
7
TFPT
TFPT
Address
Bit
DS26502
DS2155
DS26502 Register Description
LBCR
LBCR
20
4A
0
-
FLB
Loopback Control Register
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
-
PLB
2
RLB
RLB
3
LLB
LLB
4
-
LIUC
5
-
-
6
-
-
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
SR5
SR5
21
1E
0
SA4INT
RSLIP
Status Register 5.
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
SA5INT
RESEM
2
SA6INT
RESF
3
SA7INT
TSLIP
4
SA8INT
TESEM
5
-
TESF
6
-
-
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
IMR5
IMR5
22
1F
0
SA4INT
RSLIP
Interrupt Mask Register 5.
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
SA5INT
RESEM
2
SA6INT
RESF
3
SA7INT
TSLIP
4
SA8INT
TESEM
5
-
TESF
6
-
-
7
-
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
LIC2
LIC2
31
79
0
CLDS
CLDS
Line Interface Control Register 2
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
SCLD
SCLD
2
RCCFE
-
3
JACKS0
JAMUX
4
TAIS
TUA1
5
IBPV
IBPV
6
LIRST
LIRST
7
JACKS1
ETS
Address
Bit
DS26502
DS2155
DS26502 Register Description
LIC3
LIC3
32
7A
0
TAOZ
TAOZ
Line Interface Control Register 3
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
-
TSCLKE
2
-
RSCLKE
3
MM0
MM0
4
MM1
MM1
5
-
RCES
6
CMII
TCES
7
CMIE
-
Address
Bit
DS26502
DS2155
DS26502 Register Description
LIC4
LIC4
33
7B
0
RT0
RT0
Line Interface Control Register 4
Note: The first address shown is the register location in the DS26502. The second is the register location from the DS2155.
1
RT1
RT1
2
RT2
TT0
3
TT0
TT1
4
TT1
MPS0
5
TT2
MPS1
6
MPS0
CMII
7
MPS1
CMIE
New DS26502 RegistersThe following registers are new in the DS26502. Please consult the DS26502 datasheet for detailed register information. The most recent datasheet can be found at www.maxim-ic.com
Table 3. New DS26502 Registers
Address
Name
DS26502 Register Description
08
MCREG
Mode Configuration Register
09
TPCR
Transmit PLL Control Register
34
TLBC
Transmit Line Build-Out Control
Removed DS2155 RegistersThe following registers existed in the DS2155 but are no longer present in the DS26502. These functions are not available on the DS26502, or the contents of these registers have been moved to another register in the memory map. Please consult the DS2155 datasheet for detailed register information. The most recent datasheet can be found at www.maxim-ic.com
Table 4. Removed DS2155 Registers
Address
Name
DS2155 Register Description
08
SSIE1
Software Signaling Insertion Enable 1
09
SSIE2
Software Signaling Insertion Enable 2
0A
SSIE3
Software Signaling Insertion Enable 3
0B
SSIE4
Software Signaling Insertion Enable 4
0C
T1RDMR1
T1 Receive Digital Milliwatt Enable Register 1
0D
T1RDMR2
T1 Receive Digital Milliwatt Enable Register 2
0E
T1RDMR3
T1 Receive Digital Milliwatt Enable Register 3
15
IIR2
Interrupt Information Register 2
1E
SR5
Status Register 5
1F
IMR5
Interrupt Mask Register 5
20
SR6
Status Register 6
21
IMR6
Interrupt Mask Register 6
22
SR7
Status Register 7
23
IMR7
Interrupt Mask Register 7
24
SR8
Status Register 8
25
IMR8
Interrupt Mask Register 8
26
SR9
Status Register 9
27
IMR9
Interrupt Mask Register 9
28
PCPR
Per-Channel Pointer Register
29
PCDR1
Per-Channel Data Register 1
2A
PCDR2
Per-Channel Data Register 2
2B
PCDR3
Per-Channel Data Register 3
2C
PCDR4
Per-Channel Data Register 4
2D
INFO4
Information Register 4
2E
INFO5
Information Register 5
2F
INFO6
Information Register 6
30
INFO7
Information Register 7
31
H1RC
HDLC #1 Receive Control
32
H2RC
HDLC #2 Receive Control
41
ERCNT
Error Count Configuration Register
42
LCVCR1
Line Code Violation Count Register 1
43
LCVCR2
Line Code Violation Count Register 2
44
PCVCR1
Path Code Violation Count Register 1
45
PCVCR2
Path Code Violation Count Register 2
46
FOSCR1
Frames Out-of-Sync Count Register 1
47
FOSCR2
Frames Out-of-Sync Count Register 2
48
EBCR1
E-Bit Count Register 1
49
EBCR2
E-Bit Count Register 2
4B
PCLR1
Per-Channel Loopback Enable Register 1
4C
PCLR2
Per-Channel Loopback Enable Register 2
4D
PCLR3
Per-Channel Loopback Enable Register 3
4E
PCLR4
Per-Channel Loopback Enable Register 4
4F
ESCR
Elastic Store Control Register
50
TS1
Transmit Signaling Register 1
51
TS2
Transmit Signaling Register 2
52
TS3
Transmit Signaling Register 3
53
TS4
Transmit Signaling Register 4
54
TS5
Transmit Signaling Register 5
55
TS6
Transmit Signaling Register 6
56
TS7
Transmit Signaling Register 7
57
TS8
Transmit Signaling Register 8
58
TS9
Transmit Signaling Register 9
59
TS10
Transmit Signaling Register 10
5A
TS11
Transmit Signaling Register 11
5B
TS12
Transmit Signaling Register 12
5C
TS13
Transmit Signaling Register 13
5D
TS14
Transmit Signaling Register 14
5E
TS15
Transmit Signaling Register 15
5F
TS16
Transmit Signaling Register 16
60
RS1
Receive Signaling Register 1
61
RS2
Receive Signaling Register 2
62
RS3
Receive Signaling Register 3
63
RS4
Receive Signaling Register 4
64
RS5
Receive Signaling Register 5
65
RS6
Receive Signaling Register 6
66
RS7
Receive Signaling Register 7
67
RS8
Receive Signaling Register 8
68
RS9
Receive Signaling Register 9
69
RS10
Receive Signaling Register 10
6A
RS11
Receive Signaling Register 11
6B
RS12
Receive Signaling Register 12
6C
RS13
Receive Signaling Register 13
6D
RS14
Receive Signaling Register 14
6E
RS15
Receive Signaling Register 15
6F
RS16
Receive Signaling Register 16
70
CCR1
Common Control Register 1
71
CCR2
Common Control Register 2
72
CCR3
Common Control Register 3
73
CCR4
Common Control Register 4
74
TDS0SEL
Transmit Channel Monitor Select
75
TDS0M
Transmit DS0 Monitor Register
76
RDS0SEL
Receive Channel Monitor Select
77
RDS0M
Receive DS0 Monitor Register
7E
IAAR
Idle Array Address Register
7F
PCICR
Per-Channel Idle Code Value Register
80
TCICE1
Transmit Idle Code Enable Register 1
81
TCICE2
Transmit Idle Code Enable Register 2
82
TCICE3
Transmit Idle Code Enable Register 3
83
TCICE4
Transmit Idle Code Enable Register 4
84
RCICE1
Receive Idle Code Enable Register 1
85
RCICE2
Receive Idle Code Enable Register 2
86
RCICE3
Receive Idle Code Enable Register 3
87
RCICE4
Receive Idle Code Enable Register 4
88
RCBR1
Receive Channel Blocking Register 1
89
RCBR2
Receive Channel Blocking Register 2
8A
RCBR3
Receive Channel Blocking Register 3
8B
RCBR4
Receive Channel Blocking Register 4
8C
TCBR1
Transmit Channel Blocking Register 1
8D
TCBR2
Transmit Channel Blocking Register 2
8E
TCBR3
Transmit Channel Blocking Register 3
8F
TCBR4
Transmit Channel Blocking Register 4
90
H1TC
HDLC #1 Transmit Control
91
H1FC
HDLC #1 FIFO Control
92
H1RCS1
HDLC #1 Receive Channel Select 1
93
H1RCS2
HDLC #1 Receive Channel Select 2
94
H1RCS3
HDLC #1 Receive Channel Select 3
95
H1RCS4
HDLC #1 Receive Channel Select 4
96
H1RTSBS
HDLC #1 Receive Time Slot Bits/Sa Bits Select
97
H1TCS1
HDLC #1 Transmit Channel Select1
98
H1TCS2
HDLC #1 Transmit Channel Select2
99
H1TCS3
HDLC #1 Transmit Channel Select3
9A
H1TCS4
HDLC #1 Transmit Channel Select4
9B
H1TTSBS
HDLC #1 Transmit Time Slot Bits/Sa Bits Select
9C
H1RPBA
HDLC #1 Receive Packet Bytes Available
9D
H1TF
HDLC #1 Transmit FIFO
9E
H1RF
HDLC #1 Receive FIFO
9F
H1TFBA
HDLC #1 Transmit FIFO Buffer Available
A0
H2TC
HDLC #2 Transmit Control
A1
H2FC
HDLC #2 FIFO Control
A2
H2RCS1
HDLC #2 Receive Channel Select 1
A3
H2RCS2
HDLC #2 Receive Channel Select 2
A4
H2RCS3
HDLC #2 Receive Channel Select 3
A5
H2RCS4
HDLC #2 Receive Channel Select 4
A6
H2RTSBS
HDLC #2 Receive Time Slot Bits/Sa Bits Select
A7
H2TCS1
HDLC #2 Transmit Channel Select1
A8
H2TCS2
HDLC #2 Transmit Channel Select2
A9
H2TCS3
HDLC #2 Transmit Channel Select3
AA
H2TCS4
HDLC #2 Transmit Channel Select4
AB
H2TTSBS
HDLC #2 Transmit Time Slot Bits/Sa Bits Select
AC
H2RPBA
HDLC #2 Receive Packet Bytes Available
AD
H2TF
HDLC #2 Transmit FIFO
AE
H2RF
HDLC #2 Receive FIFO
AF
H2TFBA
HDLC #2 Transmit FIFO Buffer Available
B0
ESIBCR1
Extend System Information Bus Control Register 1
B1
ESIBCR2
Extend System Information Bus Control Register 2
B2
ESIB1
Extend System Information Bus Register 1
B3
ESIB2
Extend System Information Bus Register 2
B4
ESIB3
Extend System Information Bus Register 3
B5
ESIB4
Extend System Information Bus Register 4
B6
IBCC
In-Band Code Control Register
B7
TCD1
Transmit Code Definition Register 1
B8
TCD2
Transmit Code Definition Register 2
B9
RUPCD1
Receive Up Code Definition Register 1
BA
RUPCD2
Receive Up Code Definition Register 2
BB
RDNCD1
Receive Down Code Definition Register 1
BC
RDNCD2
Receive Down Code Definition Register 2
BD
RSCC
In-Band Receive Spare Control Register
BE
RSCD1
Receive Spare Code Definition Register 1
BF
RSCD2
Receive Spare Code Definition Register 2
C5
IBOC
Interleave Bus Operation Control Register
DB
BAWC
BERT Alternating Word Count Rate
DC
BRP1
BERT Repetitive Pattern Set Register 1
DD
BRP2
BERT Repetitive Pattern Set Register 2
DE
BRP3
BERT Repetitive Pattern Set Register 3
DF
BRP4
BERT Repetitive Pattern Set Register 4
E0
BC1
BERT Control Register 1
E1
BC2
BERT Control Register 2
E3
BBC1
BERT Bit Count Register 1
E4
BBC2
BERT Bit Count Register 2
E5
BBC3
BERT Bit Count Register 3
E6
BBC4
BERT Bit Count Register 4
E7
BEC1
BERT Error Count Register 1
E8
BEC2
BERT Error Count Register 2
E9
BEC3
BERT Error Count Register 3
EA
BIC
BERT Interface Control Register
EB
ERC
Error Rate Control Register
EC
NOE1
Number-of-Errors 1
ED
NOE2
Number-of-Errors 2
EE
NOEL1
Number-of-Errors Left 1
EF
NOEL2
Number-of-Errors Left 2
ConclusionFor further questions concerning migrating software from the DS2155 to the DS26502, please contact the Dallas Semiconductor Telecommunications applications support team
via email at
telecom.support@dalsemi.com or call 972-371-6555.
Datasheets for the DS2155 and the DS26502 are available online at www.maxim-ic.com/telecom/
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