XRT74L73 Datasheet, PDF (71/488 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
RECEIVE UTOPIA INTERFACE BLOCK
This section presents the Register Description/Ad-
dress Map of the control registers associated with the
Receive UTOPIA/POS-PHY Interface block.
TABLE 1: RECEIVE UTOPIA/POS-PHY INTERFACE BLOCK - REGISTER/ADDRESS MAP
ADDRESS LOCATION
REGISTER NAME
TYPE
0x0501
0x0502
0x0503
0x0504 - 0x0512
0x0513
0x0514 - 0x0516
0x0517
0x0518 - 0x0580
RECEIVE UTOPIA/POS-PHY- CONTROL REGISTERS
Receive UTOPIA/POS-PHY Control Register - Byte 2
Receive UTOPIA/POS-PHY Control Register - Byte 1
Receive UTOPIA/POS-PHY Control Register - Byte 0
Reserved
Receive UTOPIA Port Address Register
Reserved
Receive UTOPIA Port Number Register
Reserved
R/W
R/W
R/W
R/O
R/W
R/O
R/W
R/O
DEFAULT
VALUE
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
RECEIVE UTOPIA/POS-PHY CONTROL REGISTER - BYTE 0 (ADDRESS = 0X0503)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
UTOPIA
Level 3
Disable
Multi-PHY
Polling
Enable
Back to Back Direct Status
Polling
Indication
Enable
Enable
UTOPIA/POS-PHY
Data Bus Width
Cell Size[1:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
1
1
0
0
1
1
1
1
BIT NUMBER
NAME
7
UTOPIA Level 3 Disable
TYPE
R/W
DESCRIPTION
72