IDT82P2282 Integrated Device Technology, Inc., IDT82P2282 Datasheet - Page 259

• Manufacturer Part Number: IDT82P2282
• Description: 2 Channel T1/J1/E1 Transceiver
• Manufacturer: Integrated Device Technology, Inc.

IDT82P2282
E1 Transmit And Receive Termination Configuration (032H, 132H)
T_TERM[2:0]:
R_TERM[2:0]:
E1 Interrupt Enable Control 0 (033H, 133H)
DF_IE:
LOS_IE:
Programming Information
Bit Name
Bit Name
Default
Default
Bit No.
Bit No.
Type
Type
These bits select the internal impedance of the transmit path to match the cable impedance:
= 000: The 75 Ω internal impedance matching is selected.
= 001: The 120 Ω internal impedance matching is selected.
(The above two values are the standard value for E1 mode).
= 010: The 100 Ω internal impedance matching is selected.
= 011: The 110 Ω internal impedance matching is selected.
= 1xx: The internal impedance matching is bypassed, and external impedance circuit should be used.
These bits select the internal impedance of the receive path to match the cable impedance:
= 000: The 75 Ω internal impedance matching is selected.
= 001: The 120 Ω internal impedance matching is selected.
(The above two values are the standard values for E1 mode).
= 010: The 100 Ω internal impedance matching is selected.
= 011: The 110 Ω internal impedance matching is selected.
= 1xx: The internal impedance matching is bypassed, and external impedance circuit should be used.
= 0: Disable the interrupt on the INT pin when the DF_IS bit (b2, E1-03AH,...) is ‘1’.
= 1: Enable the interrupt on the INT pin when the DF_IS bit (b2, E1-03AH,...) is ‘1’.
= 0: Disable the interrupt on the INT pin when the LOS_IS bit (b0, E1-03AH,...) is ‘1’.
= 1: Enable the interrupt on the INT pin when the LOS_IS bit (b0, E1-03AH,...) is ‘1’.
7
7
Reserved
6
6
T_TERM2
Reserved
R/W
5
0
5
T_TERM1
R/W
4
0
4
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DUAL T1/E1/J1 LONG HAUL / SHORT HAUL TRANSCEIVER
T_TERM0
R/W
3
0
3
R_TERM2
DF_IE
R/W
R/W
2
1
2
0
R_TERM1
Reserved
R/W
1
1
1
October 7, 2003
R_TERM0
LOS_IE
R/W
R/W
0
1
0
0