PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0786H: RXPHY Data Type Field
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POS_FIELD[7]
POS_FIELD[6]
POS_FIELD[5]
POS_FIELD[4]
POS_FIELD[3]
POS_FIELD[2]
POS_FIELD[1]
POS_FIELD[0]
ATM_FIELD[7]
ATM_FIELD[6]
ATM_FIELD[5]
ATM_FIELD[4]
ATM_FIELD[3]
ATM_FIELD[2]
ATM_FIELD[1]
ATM_FIELD[0]
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
The RXPHY Data Type Field register is used in POS-PHY L3 mode of operation only and is
provided as a means to identify the type of traffic, ATM or packet, being sent over the POS-PHY
L3 interface. Selection of ATM and packet PHYs is done using the POS_SEL bits in the RXSDQ
FIFO Indirect Configuration register.
ATM_FIELD[7:0]
The ATM_FIELD register is provided to identify ATM cell transfers over the POS-PHY L3
interface. When the outgoing data is an ATM cell, then the ATM_FIELD[7:0] is inserted in
RDAT[31:24] at the cycle in which the in-band address is inserted in RDAT[5:0] (ie. when
RSX is logic 1).
POS_FIELD[7:0]
The POS_FIELD register is provided to identify packet data transfers over the POS-PHY L3
interface. When the outgoing data is of type packet, then the POS_FIELD[7:0] is inserted in
RDAT[31:24] at the cycle in which the in-band address is inserted in RDAT[5:0] (ie. when
RSX is logic 1).
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
371
PMC [ PMC-SIERRA, INC ]
