IDT82V2082 Integrated Device Technology, Inc., IDT82V2082 Datasheet - Page 42

• Manufacturer Part Number: IDT82V2082
• Description: 2Ch T1/J1/E1 Short Haul/long Haul Liu
• Manufacturer: Integrated Device Technology, Inc.

DUAL CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
4.2.4
Table-31 TCF0: Transmitter Configuration Register 0
Table-32 TCF1: Transmitter Configuration Register 1
1. In internal impedance matching mode, for E1/75 Ω cable impedance, the PULS[3:0] bits ( TCF1, 05H... ) should be set to ‘0000’. In external impedance matching
DFM_OFF
TCLK_SEL
PULS[3:0]
T_MD[1:0]
Symbol
mode, for E1/75 Ω cable impedance, the PULS[3:0] bits should be set to ‘0001’.
Symbol
TD_INV
T_OFF
THZ
TRANSMIT PATH CONTROL REGISTERS
-
-
(R/W, Address = 04H, 24H)
(R/W, Address = 05H, 25H)
Bit
7-6
3-0
5
4
7-5
0-1
Bit
2
4
3
Default
0000
00
1
0
Default
000
00
0
0
0
Reserved. This bit should be ‘0’ for normal operation.
Transmit driver failure monitor disable
= 0: DFM is enabled
= 1: DFM is disabled
Transmit line driver high impedance enable
= 0: Normal state
= 1: Transmit line driver high impedance enable (other transmit path still work normally).
These bits select the transmit template/LBO for short-haul/long-haul applications.
0000
0001
0010
0100
0101
1000
1001
1010
0011
0110
0111
1011
11xx
Transmit clock edge select
Reserved
Transmitter power down enable
= 0: Transmitter power up
= 1: Transmitter power down (line driver high impedance)
Transmit data invert
= 0: Data on TDn or TDPn/TDNn is active high
= 1: Data on TDn or TDPn/TDNn is active low
= 0: Data on TDPn/TDNn is sampled on the falling edge of TCLKn
= 1: Data on TDPn/TDNn is sampled on the rising edge of TCLKn
Transmitter operation mode control
T_MD[1:0] select different stages of the transmit data path
= 00: Enable HDB3/B8ZS encoder and waveform shaper blocks. Input on pin TDn is single rail NRZ data
= 01: Enable AMI encoder and waveform shaper blocks. Input on pin TDn is single rail NRZ data
= 1x: Encoder is bypassed, dual rail NRZ transmit data input on pin TDPn/TDNn
1
T1/E1/J1
DSX1
DSX1
DSX1
DSX1
DSX1
DS1
DS1
DS1
DS1
E1
E1
J1
42
2.048 MHz
2.048 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
1.544 MHz
TCLK
User programmable waveform setting
Description
Description
Cable impedance
120 Ω
100 Ω
100 Ω
100 Ω
100 Ω
100 Ω
110 Ω
100 Ω
100 Ω
100 Ω
100 Ω
75 Ω
Cable range or
-15.0 dB LBO
-22.5 dB LBO
-7.5 dB LBO
133-266 ft
266-399 ft
399-533 ft
533-655 ft
0 dB LBO
0-133 ft
0-655 ft
TEMPERATURE RANGES
LBO
-
-
Allowable Cable
INDUSTRIAL
0.6-1.2 dB
1.2-1.8 dB
1.8-2.4 dB
2.4-3.0 dB
0-28.5 dB
0-13.5 dB
0-0.6 dB
0-3.0 dB
0-43 dB
0-43 dB
0-36 dB
0-21 dB
loss