PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0000H: S/UNI-2488 Identity, and Global Performance Monitor Update
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
R
TIP
X
X
X
X
X
X
X
0
0
0
1
0
0
0
0
0
Unused
Unused
Unused
Unused
Unused
Unused
TYPE[4]
TYPE[3]
TYPE[2]
TYPE[1]
TYPE[0]
ID[3]
Bit 8
R
R
R
R
R
R
R
R
R
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
ID[2]
Bit 1
ID[1]
Bit 0
ID[0]
This register allows the revision number of the S/UNI-2488 to be read by software permitting
graceful migration to newer, feature-enhanced versions of the S/UNI-2488.
In addition, writing to this register performs a global performance monitor update by
simultaneously loading all the performance meter registers in the RHPP, RRMP, RCFP, RXSDQ,
TXSDQ, TCFP, R8TD, and T8TE blocks.
ID[3:0]:
The ID bits can be read to provide a binary S/UNI-2488 revision number.
TYPE[4:0]:
The TYPE bits can be read to distinguish the S/UNI-2488 from the other members of the
family of devices. The TYPE[4:0] register for the PM5381 S/UNI-2488 is 00010.
TIP:
The TIP bit is set to a logic one when the performance meter registers are being loaded.
Writing to this register with DRESET equal to logic 0 initiates an accumulation interval
transfer and loads all the performance meter registers in the S/UNI-2488.
TIP remains high while the transfer is in progress, and is set to a logic zero when the transfer
is complete. TIP can be polled by a microprocessor to determine when the accumulation
interval transfer is complete.
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
98
PMC [ PMC-SIERRA, INC ]
