參數(shù)資料
型號(hào): IDT82V2051EPPG8
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 11/61頁(yè)
文件大小: 0K
描述: IC LIU E1 SGL SHORT HAUL 44-TQFP
標(biāo)準(zhǔn)包裝: 1,250
類(lèi)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(lèi)型: 表面貼裝
封裝/外殼: 44-LQFP
供應(yīng)商設(shè)備封裝: 44-TQFP(10x10)
包裝: 帶卷 (TR)
其它名稱(chēng): 82V2051EPPG8
IDT82V2051E
SINGLE CHANNEL E1 SHORT HAUL LINE INTERFACE UNIT
Functional Description
19
December 9, 2005
In hardware control mode, TERM and PULS pins can be used to select
impedance matching for both receiver and transmitter. If TERM pin is low,
external impedance network will be used for impedance matching. If TERM
pin is high, internal impedance will be used for impedance matching and
PULS pins can be set to select the specific internal impedance. Refer to 5
3.3.2
LINE MONITOR
The non-intrusive monitoring on channels located in other chips can be
performed by tapping the monitored channel through a high impedance
bridging circuit. Refer to Figure-7 and Figure-9.
After a high resistance bridging circuit, the signal arriving at the RTIP/
RRING is dramatically attenuated. To compensate this attenuation, the
Monitor Gain can be used to boost the signal by 22 dB, 26 dB and 32 dB,
selected by MG[1:0] bits (RCF2, 0CH). For normal operation, the Monitor
Gain should be set to 0 dB.
In hardware control mode, MONT pin can be used to set the Monitor
Gain. When MONT pin is low, the Monitor Gain is 0 dB. When MONT pin
ishigh,theMonitorGainis26dB.Referto5HardwareControlPinSummary
for details.
NotethatLOSindicationisnotsupportedifthedeviceisoperatedinLine
Monitor Mode
Figure-7 Monitoring Receive Line in Another Chip
Figure-8 Monitor Transmit Line in Another Chip
RTIP
RRING
RTIP
RRING
normal receive mode
monitor mode
DSX cross connect
point
R
monitor gain
=22/26/32dB
monitor
gain=0dB
TTIP
TRING
RTIP
RRING
normal transmit mode
monitor mode
DSX cross connect
point
R
monitor gain
=22/26/32dB
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