DS26334 Dallas Semiconductor, DS26334 Datasheet - Page 55

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

Register Name:
Register Description:
Register Address (LIUs 1–8):
Bit #
Name
Default
Register Address (LIUs 9–16):
Bit #
Name
Default
Bits 7 to 0: Digital Loopback Control Channel n (DLBCn). When this bit is set the LIUn is placed in digital
loopback. The data at TPOS/TNEG is encoded and looped back to the decoder and output on RPOS/RNEG. The
Jitter Attenuator can optionally be included in the transmit or receive paths.
Register Name:
Register Description:
Register Address (LIUs 1–8):
Bit #
Name
Default
Register Address (LIUs 9–16):
Bit #
Name
Default
Bits 7 to 0: LOS/AIS Criteria Selection Channel n (LASCSn). This bit is used for LOS/AIS selection criteria for
LIUn. In E1 mode, if set it uses ETS 300 233 mode selections. If reset it uses G.775 criteria. In T1/J1 mode T1.231
criteria is selected.
Register Name:
Register Description:
Register Address (LIUs 1–8):
Bit #
Name
Default
Register Address (LIUs 9–16):
Bit #
Name
Default
Bits 7 to 0: Automatic Transmit All Ones Select Channel n (ATAOSn). When this bit is set all ones signal is
sent if an LOS is detected for LIUn. “All Ones Signal” uses MCLK as the reference clock.
ATAOS16
LASCS16
ATAOS8
DLBC16
LASCS8
DLBC8
7
0
7
0
7
0
7
0
7
0
7
0
ATAOS15
LASCS15
ATAOS7
DLBC15
LASCS7
DLBC7
6
0
6
0
6
0
6
0
6
0
6
0
DLBC
Digital Loopback Control Register
0Ch
2Ch
LASCS
LOS/AIS Criteria Selection Register
0Dh
2Dh
ATAOS
Automatic Transmit All Ones Select Register
0Eh
2Eh
ATAOS14
LASCS14
ATAOS6
DLBC14
LASCS6
DLBC6
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
5
0
5
0
5
0
5
0
5
0
5
0
LASCS13
ATAOS13
ATAOS5
DLBC13
LASCS5
DLBC5
55 of 121
4
0
4
0
4
0
4
0
4
0
4
0
ATAOS12
LASCS12
ATAOS4
LASCS4
DLBC12
DLBC4
3
0
3
0
3
0
3
0
3
0
3
0
ATAOS11
LASCS11
LASCS3
ATAOS3
DLBC11
DLBC3
0
0
0
0
0
0
2
2
2
2
2
2
ATAOS10
LASCS10
ATAOS2
DLBC10
LASCS2
DLBC2
1
0
1
0
1
0
1
0
1
0
1
0
ATAOS1
ATAOS9
LASCS1
LASCS9
DLBC1
DLBC9
0
0
0
0
0
0
0
0
0
0
0
0