XRT79L71_1 Datasheet, PDF (60/434 Pages) Exar Corporation – 1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC -

XRT79L71
1-CHANNEL DS3/E3 ATM UNI/PPP/CLEAR-CHANNEL FRAMER IC - REGISTER/MAP DESCRIPTION
Receive POS-PHY Interface - Receive Control Register Byte - 0 (Address = 0x0502)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
Unused
AUTO Stop
Enable
Receive_PO
S_PHY_Add
r[4:0]
R/O
R/O
R/W
R/W
R/W
R/W
R/W
0
0
X
X
X
X
X
REV. 1.0.0
BIT 0
R/W
X
BIT NUMBER
NAME
7-6
Unused
5
AUTO Stop Enable
4-0
Receive POS-PHY
Addr[4:0]
TYPE
R/W
R/W
R/W
DESCRIPTION
Receive POS-PHY Interface - AUTO STOP Enable:
This READ/WRITE bit-field permits the user to either enable or
disable the AUTO-STOP feature within the Receive POS-PHY
Interface block.
If the AUTO-STOP feature is enabled, then the Receive POS-
PHY Interface block will automatically terminate its transmission
of data (to the Link Layer Processor) once it has reached the end
of the Packet (even if the Link Layer Processor block continues
to assert the RxPEnb* signal. The Link Layer Processor block
has to re-assert the RxPEnb* input pin in order to begin the pro-
cess of reading out the next packet.
0 - Disable the AUTO-STOP feature.
1 - Enables the AUTO-STOP feature.
Receive POS-PHY Interface - Port Address:
These five READ/WRITE bit-fields permit the user to assign a
Receive POS-PHY Port Address to the Receive POS-PHY Inter-
face block.
NOTE: The Saturn POS-PHY Level 2 and 3 specifications permit
the user to assign a Receive POS-PHY Port Address of
any five-bit value other than 0x1F (the NULL Address).
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