DS26334 Dallas Semiconductor, DS26334 Datasheet - Page 48

• Manufacturer Part Number: DS26334
• Description: E1/T1/J1 Shortand Long-Haul Line Interface Unit
• Manufacturer: Dallas Semiconductor

6.1 Register Description
This section contains the detailed register descriptions of each bit. Whenever the variable “n” in italics is used in
any of the register descriptions, it represents 1–16. Note that in the register descriptions, there are duplicate
registers for LIUs 1–8 and LIUs 9–16. There are registers in LIUs 1–8 that do not have a duplicate in the register
set for LIUs 9–16. For these registers, only one address is listed. All other registers list two addresses, one for LIUs
1–8 and one for LIUs 9–16.
6.1.1 Primary Register Bank
The ADDP register must be set to 00h to access this bank.
Register Name:
Register Description:
Register Address:
Bit #
Name
Bit 7: Device CODE ID Bit 7 (ID7). This bit is “one” for long-haul operation.
Bits 6 to 3: Device CODE ID Bits 6 to 3 (ID[6:3]). These bits tell the user the number of ports the device contains.
Bits 2 to 0: Device CODE ID Bits 2 to 0 (ID[2:0]). These bits tell the user the revision of the part. Contact the
factory for details.
Register Name:
Register Description:
Register Address (LIUs 1–8):
Bit #
Name
Default
Register Address (LIUs 9–16):
Bit #
Name
Default
Bits 7 to 0: Analog Loopback Control Bits Channel n (ALBCn). When this bit is set, LIUn is placed in analog
loopback. TTIP and TRING are looped back to RTIP and RRING. The data at RTIP and RRING is ignored. The
LOS detector is still in operation. The jitter attenuator is in use if enabled for the transmitter or receiver.
ALBC16
ALBC8
ID7
7
7
0
7
0
ALBC15
ALBC7
ID6
6
6
0
6
0
ID
Identification Register
00h
ALBC
Analog Loopback Control Register
01h
21h
ALBC14
ALBC6
ID5
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
5
5
0
5
0
ALBC13
ALBC5
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ID4
4
4
0
4
0
ALBC12
ALBC4
ID3
3
3
0
3
0
ALBC11
ALBC3
ID2
0
0
2
2
2
ALBC10
ALBC2
ID1
1
1
0
1
0
ALBC1
ALBC9
ID0
0
0
0
0
0