IDT88K8483 Integrated Device Technology, IDT88K8483 Datasheet - Page 122

• Manufacturer Part Number: IDT88K8483
• Description: Spi-4 Exchange Document Issue 1.0
• Manufacturer: Integrated Device Technology

PFP Egress Burst Size Table
PFP Egress Weight And Direction Register
MAX_BURST_S
MAX_BURST_H
Note: The MAX_BURST_H and MAX_BURST_S values relate to MaxBurst2 and MaxBurst1 parameters in the OIF SPI-4 implementation agreement (OIF-SPI-4-
02.1).
DIR[1:0]
WEIGHT
Note: Please refer to
IDT IDT88K8483
There are 64 registers in this table, one for each LID.
There are 64 registers in this table, one for each LID.
Field
Field
Table 99 PFP Egress Weight And Direction Register
page 52
R/W
R/W
Table 98 PFP Egress Burst Size Table (Block Base=0x1400/0x1C00, Register Offset=0x00-0x3F)
R/W
R/W
Read /
Read /
Write
Write
for a detailed explanation of PFP weighing and scheduling.
0:0-0:3
0:4-0:7
0:0-0:1
0:2
Bits
Bits
4
4
2
1
Length
Length
0xF
0xF
11
0
Reset
Reset
State
State
122 of 162
(Block Base=0x1500/0x1D00, Register Offset=0x00-03F)
The maximum data burst size transferred to the egress interface when a starving
status signal is received.
bytes
The maximum data burst size transferred to the egress interface when a hungry sta-
tus
bytes.
Indicates the PFP LID direction. Each LID has 4 directions.
------------------------------------------------------------------------------
00:
01:
10:
11:
This field sets the priority mode of the LIDs. This weight is used by the egress server
scheduler to service the LIDs when the WEIGHT_EN field in
Enable Register (p. 124)
0: Low priority for this LID, denoted by the register offset.
1:High priority for this LID, denoted by the register offset.
signal is received. The actual burst size is equal to (MAX_BURST_H+1)*16
Extract (OBC for A)
T-M PFP
Main SPI-4
Redirect
Discard
(PRBS for B)
is set to 1.
The actual burst size is equal to
Description
Description
Tributary SPI-4
M-T PFP
Extract (OBC for A)
Loopback
Discard
(Auxiliary for B)
(MAX_BURST_S+1)*16
PFP Queue Weighting
October 20, 2006