IDT82V2082 Integrated Device Technology, Inc., IDT82V2082 Datasheet - Page 41

• 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
4.2.2
Table-29 TERM: Transmit and Receive Termination Configuration Register
4.2.3
Table-30 JACF: Jitter Attenuation Configuration Register
T_TERM[2:0]
R_TERM[2:0]
JACF[1:0]
JADP[1:0]
JA_LIMIT
Symbol
Symbol
JABW
TRANSMIT AND RECEIVE TERMINATION REGISTER
JITTER ATTENUATION CONTROL REGISTER
-
-
(R/W, Address = 03H, 23H)
(R/W, Address = 02H, 22H)
7-6
5-3
2-0
7-6
4-3
2-1
Bit
Bit
5
0
Default
Default
000
000
00
00
00
00
1
0
Jitter Attenuation depth select
Reserved.
These bits select the internal termination for transmit 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 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).
Reserved.
= 0: Normal mode
= 1: JA limit mode
Jitter Attenuation configuration
= 00/10: JA not used
= 01: JA in transmit path
= 11: JA in receive path
= 00: 128 bits
= 01: 64 bits
= 1x: 32 bits
Jitter transfer function bandwidth select
= 0: 6.8 Hz (E1)
=1: 0.9 Hz (E1)
1.25 Hz (T1/J1)
5 Hz (T1/J1)
41
Description
Description
TEMPERATURE RANGES
INDUSTRIAL