XRT74L73 Datasheet, PDF (63/488 Pages) Exar Corporation – 3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER

PRELIMINARY
XRT74L73
3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER
REV. P1.0.1
BIT NUMBER
NAME
0
Software RESET
TYPE
R/W
DESCRIPTION
Software RESET:
This READ-WRITE bit-field permits the user to reset the
XRT74L73 device.
0 - Configure the XRT74L73 device into RESET mode.
1 - Normal operation.
DEVICE ID REGISTER (ADDRESS = 0X0104)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
DEVICE_ID_VALUE [7:0]
R/O
R/O
R/O
R/O
R/O
0
1
1
1
1
BIT 2
R/O
0
BIT 1
R/O
1
BIT 0
R/O
0
BIT NUMBER
NAME
7-0
Device ID Value
TYPE
R/O
DESCRIPTION
Device ID Value:
This READ-ONLY bit-field is set to the value "0x7A" and permits
the user’s software code to uniquely identify this device as the
XRT74L73 device.
REVISION ID REGISTER (ADDRESS = 0X0105)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
Revision Number Value
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
BIT 2
R/O
0
BIT 1
R/O
0
BIT 0
R/O
1
BIT NUMBER
NAME
7-0
Revision Number Value
TYPE
R/O
DESCRIPTION
Revision Number Value:
This READ-ONLY bit-field is set to the value that corresponds to
its revision number. Revision A silicon will be set to the value
"0x01". This register permits the user’s software code to
uniquely identify the revision number of the XRT74L73 device.
OPERATION INTERRUPT STATUS REGISTER - BYTE 1 (ADDRESS = 0X0112)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
Unused
DS3/E3
DS3/E3
LIU/JA Block Framer Block
Interrupt Sta- Interrupt Sta-
tus
tus
R/O
R/O
R/O
R/O
R/O
R/O
0
0
0
0
0
0
BIT 1
BIT 0
Unused
R/O
R/O
0
0
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