PM7344 S/UNI-MPH
DATA SHEET
PMC-950449
ISSUE 6
MULTI-PHY USER NETWORK INTERFACE
Registers 08DH, 18DH, 28DH and 38DH: TXCP Idle/Unassigned Cell Pattern:
H4 octet
Bit
Type
Function
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
H4[7]
H4[6]
H4[5]
H4[4]
H4[3]
H4[2]
H4[1]
H4[0]
0
0
0
0
0
0
0
0
H4[7:0]:
The H4[7:0] bits contain the cell header pattern inserted in the fourth octet
(H4) of the idle/unassigned cell. Idle/unassigned cells are inserted when the
S/UNI-MPH detects that the transmit FIFO contains no outstanding cells.
H4[7] is the most significant bit and is the first bit transmitted. H4[0] is the
least significant bit. By default, unassigned cells are transmitted. This
register should be set to 01H to transmit idle cells.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
213