78P2343-IEL TERIDIAN [Teridian Semiconductor Corporation], 78P2343-IEL Datasheet - Page 10

• Manufacturer Part Number: 78P2343-IEL
• Description: 3-port E3/DS3/STS-1 LIU with Jitter Attenuator
• Manufacturer: TERIDIAN [Teridian Semiconductor Corporation]

78P2343JAT
3-port E3/DS3/STS-1 LIU
with Jitter Attenuator
REGISTER DESCRIPTION
PORT-SPECIFIC REGISTERS
For PA[3:0] = N = 1-3 only. Accessing a register with port address greater than 3 constitutes an invalid
command, and the read/write operation will be ignored.
ADDRESS N-0: MODE CONTROL REGISTER
Page 10 of 37
BIT
7
6
5
4
3
2
1
0
LLBKA
LLBKB
NAME
PDRX
PDTX
TXEN
RLBK
MON
LBO
TYPE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
VALUE
DFLT
0
0
1
0
0
0
0
1
(continued)

2005 Teridian Semiconductor Corporation
NOTE: Relevant only when the REGEN bit is set. Otherwise, LPBKx pin
selection prevails.
Transmitter Power-Down:
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin
selection prevails.
Receiver Power-Down:
Transmitter Line Build-Out (DS3 and STS-1 only):
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin
selection prevails.
Local (Analog) Loopback Mode Selection:
[LLBKA : LLBKB] = 00 : Normal operation
NOTE: Relevant only when the REGEN bit is set. Otherwise, LPBKx pin
selection prevails.
Remote (Digital) Loopback Enable:
0 : Normal Operation
1 : Loops RCLK, RPOS, and RNEG back onto TCLK, TPOS, and TNEG
Monitor Mode Enable:
Used for reception of split-off signals that are flat attenuated by at least
16dB but no more than 20dB.
Transmitter Output Enable:
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin
selection prevails.
0 : Normal Operation
1 : Power-Down
0 : Normal Operation
1 : Power-Down
0 :
1 : < 225ft of cable attached to the cross-connect
0 : Disable
1 : Enable
0 : Transmit driver is disabled. Output is tri-stated.
1 : Normal Operation
225ft of cable attached to the cross-connect
01 : Local (Analog) Loopback
10 : Adjacent receiver input (see page 3)
11 : Adjacent transmitter loopback (see page 3)
DESCRIPTION
Rev 2.2