參數(shù)資料
型號： IDT82P2821BHG
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 101/151頁
文件大?。?/td> 0K
描述： IC LINE INTERFACE UNIT 640-PBGA
標(biāo)準(zhǔn)包裝： 5
功能： 線路接口單元（LIU）
接口： E1，J1，T1
電路數(shù)： 1
電源電壓： 1.8V, 3.3V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 640-BGA 裸露焊盤
供應(yīng)商設(shè)備封裝： 640-PBGA-EP（31x31）
包裝： 托盤
包括： 缺陷和警報檢測，驅(qū)動器過流檢測和保護(hù)，LLOS 檢測，PRBSARB / IB 檢測和生成
其它名稱： 800-1703
82P2821BHG
IDT82P2821
21(+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
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
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
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
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
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
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
Note:
* In Transmit Single Rail NRZ Format mode, the corresponding indication is disabled and the corresponding setting is reserved.
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