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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  
3.12 Transmitter Registers  
Fully Integrated T1/E1 Framer and Line Interface  
073Transmit Error Insert (TERROR)  
Transmit error insertion capabilities are provided for system diagnostic, production test, and test equipment  
applications. Writing a 1 to any TERROR bit injects a single occurrence of the respective error on  
TPOSO/TNEGO and XTIP/XRING outputs. Writing a 0 has no effect. Multiple transmit errors can be  
generated simultaneously. Injected errors also affect data sent during either a Framer or Analog Loopback  
[FLOOP or ALOOP; addr 014].  
7
6
5
4
3
2
1
0
TSERR  
TMERR  
TBERR  
BSLIP  
TCOFA  
TCERR  
TFERR  
TVERR  
TSERR  
Inject CAS Multiframe (MAS) ErrorInjects a single MAS pattern error. TSERR performs a  
logical inversion of the first MAS bit transmitted.  
0 = no effect  
1 = inject MAS error  
TMERR  
Inject Multiframe ErrorInjects a single Fs (T1) or MFAS bit (E1) error. TMERR performs a  
logical inversion of the next multiframe bit transmitted. The processor can pace writing to  
TMERR to control which MFAS bit is errored.  
0 = no effect  
1 = inject multiframe error  
TBERR  
Inject PRBS Test Pattern ErrorInjects a single PRBS error by logically inverting the next  
PRBS generator output bit. The processor can pace writing to TBERR to create the desired bit  
error ratio (up to 5E-3 if TBERR asserted 1/192 bits at every frame interrupt).  
0 = no effect  
1 = inject PRBS error  
BSLIP/TCOFA  
Inject Transmit COFAForces a 1-bit shift in the location of transmit frame alignment by  
deleting (or inserting) one bit position from the transmit frame. During E1 modes, BSLIP  
determines in which direction the bit slip will occur. In T1 modes, only one bit deletion is  
provided. Note that TCOFA alters the extraction rate of data from the transmit slip buffer; thus,  
repeated TCOFAs eventually cause a controlled frame slip where one frame of data is repeated  
(T1/BSLIP = 0) or where one frame of data is deleted (BSLIP = 1).  
TCOFA T1/E1N  
BSLIP  
Transmit COFA  
0
1
1
1
X
0
X
0
No effect  
Inhibit output of TS0 bit 1 for one frame  
Insert 1 prior to FAS pattern for one frame  
Inhibit output of F-bit for one frame  
0
1
1
X
TCERR  
TFERR  
Inject CRC ErrorInjects a single CRC6 (T1) or CRC4 (E1) bit error. TCERR logically invert  
the next CRC bit transmitted. The processor can pace writing to TCERR to control which CRC  
bit is errored.  
0 = no effect  
1 = inject CRC error  
Inject Frame Bit ErrorInjects a single Ft, FPS, or FAS bit error, depending on the selected  
transmit framer mode. TFERR logically invert the next frame bit transmitted. The processor  
can pace writing to TFERR, to control which frame bit is errored.  
0 = no effect  
1 = inject frame error  
3-74  
Conexant  
N8370DSE