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参数资料
型号： IDT82P2828BHG
厂商： IDT, Integrated Device Technology Inc
文件页数： 104/154页
文件大小： 0K
描述： IC LIU T1/J1/E1 28+1CH 640-PBGA
标准包装： 5
类型： 线路接口装置（LIU）
规程： E1
电源电压： 3.13 V ~ 3.47 V
安装类型： 表面贴装
封装/外壳： 640-BGA 裸露焊盘
供应商设备封装： 640-PBGA-EP（31x31）
包装： 托盘
其它名称： 82P2828BHG
IDT82P2828
28(+1) CHANNEL HIGH-DENSITY T1/E1/J1 LINE INTERFACE UNIT
Functional Description
53
February 6, 2009
3.5.7.2 TMFn Indication
In Transmit Single Rail NRZ Format mode and Transmit Dual Rail RZ
Format mode, the TDNn/TMFn pin is used as TMFn. Refer to Table-4
Multiplex Pin Used in Transmit System Interface for details.
TMFn can indicate the status of PRBS/ARB, SAIS, TOC, TLOS,
SEXZ, SBPV, SEXZ + SBPV or SLOS, as selected by the
TMF_DEF[2:0] bits (b7~5, TCF1,...). However, the indication of SBPV,
SEXZ + SBPV and SLOS is disabled automatically in Transmit Single
Rail NRZ Format mode. Refer to Table-22 for details.
Table-22 TMFn Indication
TMF_DEF[2:0]
Indication On TMF
Details
000
PRBS/ARB
TMFn is high if PRBS/ARB is detected in synchronization in the transmit path. During the synchronization, TMFn
goes low for a T1/E1 clock cycle if a PRBS/ARB error is detected. TMFn is low if PRBS/ARB is out of synchronization.
001
System Alarm Indication
Signal (SAIS)
TMFn is high if AIS is detected in the transmit path and low if it is cleared. This indication corresponds to the SAIS_S
bit (b7, STAT1,...). Refer to Section 3.5.4 Alarm Indication Signal (AIS) Detection and Generation.
010
Transmit Over Current
(TOC)
TMFn is high if transmit over current is detected and low if it is cleared. This indication corresponds to the TOC_S bit
(b4, STAT0,...). Refer to Section 3.3.5.1 Transmit Over Current Protection.
011
Transmit Loss of Signal
(TLOS)
TMFn is high if LOS is detected in the transmit line side and low if it is cleared. This indication corresponds to the
TLOS_S bit (b2, STAT0,...). Refer to Section 3.5.3.3 Transmit LOS (TLOS).
100
System Excessive Zeroes
(SEXZ)
TMFn goes high for a T1/E1 clock cycle if an EXZ is detected in the transmit path, otherwise it is low. Refer to
Section 3.5.2 Excessive Zeroes (EXZ) Detection
101
System Bipolar Violation
(SBPV) *
TMFn goes high for a T1/E1 clock cycle if a BPV/CV is detected in the transmit path, otherwise it is low. Refer to
Section 3.5.1 Bipolar Violation (BPV) / Code Violation (CV) Detection and BPV Insertion.
110
System Excessive Zeroes
(SEXZ) + System Bipolar
Violation (SBPV) *
TMFn goes high for a T1/E1 clock cycle if an EXZ or a BPV/CV is detected in the transmit path, otherwise it is low.
111
System Loss of Signal
(SLOS) *
TMFn is high if LOS is detected in the transmit system side and low if it is cleared. This indication corresponds to the
SLOS_S bit (b1, STAT0,...). Refer to Section 3.5.3.2 System LOS (SLOS).
Note:
* In Transmit Single Rail NRZ Format mode, the corresponding indication is disabled and the corresponding setting is reserved.
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