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78P2343JAT-IGT/F 参数 Datasheet PDF下载

78P2343JAT-IGT/F图片预览
型号: 78P2343JAT-IGT/F
PDF下载: 下载PDF文件 查看货源
内容描述: [PCM Transceiver, 1-Func, PQFP100, LEAD FREE, LQFP-100]
分类和应用: 电信集成电路PC
文件页数/大小: 37 页 / 351 K
品牌: TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
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78P2343JAT  
3-port E3/DS3/STS-1 LIU  
with Jitter Attenuator  
REGISTER DESCRIPTION (continued)  
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  
DFLT  
BIT  
NAME  
TYPE  
DESCRIPTION  
VALUE  
Transmitter Power-Down:  
0 : Normal Operation  
1 : Power-Down  
7
PDTX  
R/W  
0
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin  
selection prevails.  
Receiver Power-Down:  
6
5
PDRX  
LBO  
R/W  
R/W  
0
1
0 : Normal Operation  
1 : Power-Down  
Transmitter Line Build-Out (DS3 and STS-1 only):  
0 : 225ft of cable attached to the cross-connect  
1 : < 225ft of cable attached to the cross-connect  
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin  
selection prevails.  
Local (Analog) Loopback Mode Selection:  
[LLBKA : LLBKB] = 00 : Normal operation  
01 : Local (Analog) Loopback  
4
3
LLBKA  
LLBKB  
R/W  
R/W  
0
0
10 : Adjacent receiver input (see page 3)  
11 : Adjacent transmitter loopback (see page 3)  
NOTE: Relevant only when the REGEN bit is set. Otherwise, LPBKx pin  
selection prevails.  
Remote (Digital) Loopback Enable:  
0 : Normal Operation  
2
1
0
RLBK  
MON  
TXEN  
R/W  
R/W  
R/W  
0
0
1
1 : Loops RCLK, RPOS, and RNEG back onto TCLK, TPOS, and TNEG  
NOTE: Relevant only when the REGEN bit is set. Otherwise, LPBKx pin  
selection prevails.  
Monitor Mode Enable:  
Used for reception of split-off signals that are flat attenuated by at least  
16dB but no more than 20dB.  
0 : Disable  
1 : Enable  
Transmitter Output Enable:  
0 : Transmit driver is disabled. Output is tri-stated.  
1 : Normal Operation  
NOTE: Relevant only when the REGEN bit is set. Otherwise, LBOx pin  
selection prevails.  
Page 10 of 37  
2005 Teridian Semiconductor Corporation  
Rev 2.2  
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