參數(shù)資料
型號: IDT82V2088DRG
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 37/78頁
文件大?。?/td> 0K
描述: IC LIU T1/J1/E1 8CH 208-TQFP
標(biāo)準(zhǔn)包裝: 12
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: 208-BFQFP
供應(yīng)商設(shè)備封裝: 208-PQFP(28x28)
包裝: 托盤
其它名稱: 82V2088DRG
42
INDUSTRIAL
TEMPERATURE RANGES
OCTAL CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
1. In internal impedance matching mode, for E1/75
cable impedance, the PULS[3:0] bits (TCF1, 03H...) should be set to ‘0000’. In external impedance matching
mode, for E1/75
cable impedance, the PULS[3:0] bits should be set to ‘0001’.
Table-33 TCF1: Transmitter Configuration Register 1
(R/W, Address = 03H,23H,43H,63H,83H,A3H,C3H,E3H)
Symbol
Bit
Default
Description
-
7-6
00
Reserved. This bit should be ‘0’ for normal operation.
DFM_OFF
5
0
Transmit driver failure monitor disable
= 0: DFM is enabled
= 1: DFM is disabled
THZ
4
1
Transmit line driver high impedance enable
= 0: normal state
= 1: transmit line driver high impedance enable (other transmit path still in normal state)
PULS[3:0]
3-0
0000
These bits select the transmit template/LBO for short-haul/long-haul applications.
T1/E1/J1
TCLK
Cable
Impedance
Cable Range
or LBO
Cable Loss
00001
E1
2.048 MHz
75
-
0~43 dB (default)
0001
E1
2.048 MHz
120
-0~43 dB
0010
DSX1
1.544 MHz
100
0~133 ft
0~0.6 dB
0011
DSX1
1.544 MHz
100
133~266 ft
0.6~1.2 dB
0100
DSX1
1.544 MHz
100
266~399 ft
1.2~1.8 dB
0101
DSX1
1.544 MHz
100
399~533 ft
1.8~2.4 dB
0110
DSX1
1.544 MHz
100
533~655 ft
2.4~3.0 dB
0111
J1
1.544 MHz
110
0~655 ft
0~3.0 dB
1000
DS1
1.544 MHz
100
0 dB LBO
0~36 dB
1001
DS1
1.544 MHz
100
-7.5 dB LBO
0~28.5 dB
1010
DS1
1.544 MHz
100
-15 dB LBO
0~21 dB
1011
DS1
1.544 MHz
100
-22.5 dB LBO
0~13.5 dB
11xx
User programmable waveform setting
Table-34 TCF2: Transmitter Configuration Register 2
(R/W, Address = 04H,24H,44H,64H,84H,A4H,C4H,E4H)
Symbol
Bit
Default
Description
-
7-6
00
Reserved
SCAL[5:0]
5-0
100001
SCAL specifies a scaling factor to be applied to the amplitude of the user-programmable arbitrary pulses which is
to be transmitted if needed. The default value of SCAL[5:0] is ‘100001’. Refer to 3.2.3.3 User-Programmable Arbi-
= 110110: default value for T1 0~133 ft, T1 133~266 ft, T1 266~399 ft, T1 399~533 ft, T1 533~655 ft, J1 0~655 ft,
DS1 0dB LBO. One step change of this value results in 2% scaling up/down against the pulse amplitude.
= 010001: default value for DS1 -7.5 dB LBO. One step change of this value results in 6.25% scaling up/down
against the pulse amplitude.
= 001000: default value for DS1 -15.0 dB LBO. One step change of this value results in 12.5% scaling up/down
against the pulse amplitude.
= 000100: default value for DS1 -22.5 dB LBO. One step change of this value results in 25% scaling up/down
against the pulse amplitude.
= 100001: default value for E1 75
and 120 . One step change of this value results in 3% scaling up/down
against the pulse amplitude.
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