參數(shù)資料
型號： IDT82V2044EPFG
廠商： IDT, Integrated Device Technology Inc
文件頁數(shù)： 37/73頁
文件大?。?/td> 0K
描述： IC LIU T1/E1 QUAD SHORT 128-TQFP
標準包裝： 15
類型： 線路接口裝置（LIU）
規(guī)程： E1
電源電壓： 3.13 V ~ 3.47 V
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應商設備封裝： 128-TQFP（14x20）
包裝： 托盤
其它名稱： 82V2044EPFG
42
INDUSTRIAL
TEMPERATURE RANGES
QUAD CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
4.2.5
NETWORK DIAGNOSTICS CONTROL REGISTERS
Table-35 MAINT0: Maintenance Function Control Register 0
(R/W, Address = 0AH,4AH,8AH,CAH)
Symbol
Bit
Default
Description
-7
0
Reserved
PATT[1:0]
6-5
00
These bits select the internal pattern and insert it into the transmit data stream.
= 00: normal operation (PATT_CLK = 0) / insert all zeros (PATT_CLK = 1)
= 01: insert All Ones
= 10: insert PRBS (E1: 215-1) or QRSS (T1/J1: 220-1)
= 11: insert programmable Inband Loopback activate or deactivate code
PATT_CLK
4
0
Selects reference clock for transmitting internal pattern
= 0: uses TCLKn as the reference clock
= 1: uses MCLK as the reference clock
PRBS_INV
3
0
Inverts PRBS
= 0: PRBS data is not inverted
= 1: PRBS data is inverted before transmission and detection
LAC
2
0
The LOS/AIS criterion is selected as below:
= 0: G.775 (E1) / T1.231 (T1/J1)
= 1: ETSI 300233 & I.431 (E1) / I.431 (T1/J1)
AISE
1
0
AIS enable during LOS
= 0: AIS insertion on RDPn/RDNn/RCLKn is disabled during LOS
= 1: AIS insertion on RDPn/RDNn/RCLKn is enabled during LOS
ATAO
0
Automatically Transmit All Ones (enabled only when PATT[1:0] = 01)
= 0: disabled
= 1: Automatically Transmit All Ones pattern at TTIPn/TRINGn during LOS.
Table-36 MAINT1: Maintenance Function Control Register 1
(R/W, Address = 0BH,4BH,8BH,CBH)
Symbol
Bit
Default
Description
-
7-4
0000
Reserved
ARLP
3
0
Automatic Remote Loopback Control
= 0: disables Automatic Remote Loopback (normal transmit and receive operation)
= 1: enables Automatic Remote Loopback
RLP
2
0
Remote loopback enable
= 0: disables remote loopback (normal transmit and receive operation)
= 1: enables remote loopback
ALP
1
0
Analog loopback enable
= 0: disables analog loopback (normal transmit and receive operation)
= 1: enables analog loopback
DLP
0
Digital loopback enable
= 0: disables digital loopback (normal transmit and receive operation)
= 1: enables digital loopback
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