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BT8375EPF 参数 Datasheet PDF下载

BT8375EPF图片预览
型号: BT8375EPF
PDF下载: 下载PDF文件 查看货源
内容描述: 单芯片收发器T1 / E1和综合业务数字网( ISDN )基本速率接口 [single chip transceivers for T1/E1 and Integrated Service Digital Network (ISDN) primary rate interfaces]
分类和应用: 电信集成电路综合业务数字网
文件页数/大小: 323 页 / 1950 K
品牌: CONEXANT [ CONEXANT SYSTEMS, INC ]
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Bt8370/8375/8376  
Fully Integrated T1/E1 Framer and Line Interface  
3.12 Transmitter Registers  
TVERR  
Inject Line Code ViolationInjects a single LCV error depending on the line mode and the  
selected ZCS. In T1 mode, the LCV injector waits for transmission of two consecutive pulses  
on the data output before performing BPV error insertion and clearing the TVERR bit. A BPV  
error cannot be injected into a transmit data stream that does not contain two consecutive 1s.  
TVERR is latched until an opportunity to inject a BPV error is presented, thus preventing the  
receiving end from detecting frame or multiframe bit errors, CRC errors, multiple BPV errors  
(due to ZCS pattern corruption), or PRBS test pattern bit errors as a consequence of error  
insertion. In E1 mode with HDB3 selected, the LCV injector sends two consecutive BPVs of  
the same polarity, which causes the receiving end to detect a single LCV error.  
0 = no effect  
1 = inject line code violation  
074Transmit Manual Sa-Byte/FEBE Configuration (TMAN)  
7
6
5
4
3
2
1
0
INS_SA[8]  
INS_SA[7]  
INS_SA[6]  
INS_SA[5]  
INS_SA[4]  
FEBE_II  
FEBE_I  
TFEBE  
INS_SA[8]  
Manual Sa8-Byte Transmit (0-bypass)  
Manual Sa7-Byte Transmit (0-bypass)  
Manual Sa6-Byte Transmit (0-bypass)  
Manual Sa5-Byte Transmit (0-bypass)  
Manual Sa4-Byte Transmit (0-bypass)  
INS_SA[7]  
INS_SA[6]  
INS_SA[5]  
INS_SA[4]  
FEBE_II  
Bit to manually transmit in FEBE bit position of Frame 15.  
Bit to manually transmit in FEBE bit position of Frame 13.  
FEBE_I  
TFEBE  
Manual Transmit FEBE (Overrides INS_FE; addr 072)Provides a manual override for  
FEBE bits that are normally sent by the alarm formatter [INS_FE; addr 072]. When active,  
FEBE_I controls the data output in TS0 bit 1 of frame 13 (FEBE13), and FEBE_II controls the  
data output in TS0 bit 1 of frame 15 (FEBE15).  
INS_FE TFEBE FEBE[13] FEBE[15]  
Description  
Bypass FEBE  
Automatic FEBE  
Manual FEBE  
0
1
1
X
0
TPCMI  
SMF I  
TPCMI  
SMF II  
1
FEBE_I  
FEBE_II  
NOTE: Automatic FEBE insertion uses two CRC4 error signals from the receiver to  
indicate SMF I and SMF II errors. Each error signal is latched and held for one  
full multiframe to compensate for phase differences between receive and transmit  
multiframe timing.  
N8370DSE  
Conexant  
3-75