82V2081PPG8 IDT, Integrated Device Technology Inc, 82V2081PPG8 Datasheet - Page 35

• Manufacturer Part Number: 82V2081PPG8
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V2081PPG8

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Package Type: TQFP
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

SINGLE CHANNEL T1/E1/J1 LONG HAUL/SHORT HAUL LINE INTERFACE UNIT
4.2
4.2.1
Table-24 ID: Device Revision Register
Table-25 RST: Reset Register
Table-26 GCF: Global Configuration Register
Table-27 TERM: Transmit and Receive Termination Configuration Register
T_TERM[2:0]
R_TERM[2:0]
INT_PIN[1:0]
RST[7:0]
Symbol
Symbol
Symbol
Symbol
ID[7:0]
T1E1
REGISTER DESCRIPTION
CONTROL REGISTERS
-
-
(R, Address = 00H)
(W, Address = 01H)
(R/W, Address = 02H)
(R/W, Address = 03H)
7-0
7-0
7-3
1-0
7-6
5-3
2-0
Bit
Bit
Bit
Bit
2
Default
Default
Default
Default
00000
00H
00H
000
000
00
00
0
Software reset. A write operation on this register will reset all internal registers to their default values, and the status
These bits select the internal termination for transmit line impedance matching.
00H is for the first version.
of all ports are set to the default status. The content in this register can not be changed.
Reserved.
This bit selects the E1 or T1/J1 operation mode globally.
= 0: E1 mode is selected.
= 1: T1/J1 mode is selected.
Interrupt pin control
= X0: Open drain, active low (with an external pull-up resistor)
= 01: Push-pull, active low
= 11: Push-pull, active high
Reserved.
= 000: Internal 75 Ω impedance matching
= 001: Internal 120 Ω impedance matching
= 010: Internal 100 Ω impedance matching
= 011: Internal 110 Ω impedance matching
= 1xx: Selects external impedance matching resistors for E1 mode only. T1/J1 does not require external impedance
resistors (see Table-14).
These bits select the internal termination for receive line impedance matching.
= 000: Internal 75 Ω impedance matching
= 001: Internal 120 Ω impedance matching
= 010: Internal 100 Ω impedance matching
= 011: Internal 110 Ω impedance matching
= 1xx: Selects external impedance matching resistors (see Table-15).
35
Description
Description
Description
Description
TEMPERATURE RANGES
INDUSTRIAL