MVTX2801
Data Sheet
10.6.44 QOSC15 - BYTE_C5_G3
2
I C Address h06A, Serial Interface Address:h52C
Bits [7:0]:
•
Byte count threshold for C5 queue WRED (Default 8'h28)
(128 byte/unit when Delay Bound is used)
(1024 byte/unit when WFQ is used)
10.6.45 QOSC16 - BYTE_C6_G3
2
I C Address h06B, Serial Interface Address:h52D
Bits [7:0]:
•
Byte count threshold for C6 queue WRED (Default 8'h50)
(64 byte/unit when Delay Bound is used)
(1024 byte/unit when WFQ is used)
10.6.46 QOSC17 - BYTE_C7_G3
2
I C Address h06C, Serial Interface Address:h52E
Bits [7:0]:
•
Byte count threshold for C7 queue WRED (Default 8'h50)
(64 byte/unit when Delay Bound is used)
(1024 byte/unit when WFQ is used)
QOSC12 through QOSC17 represent the values F-A in Table 3 for Gigabit port 3. They are per-queue byte
thresholds for random early drop. QOSC17 represents A, and QOSC12 represents F.
Classes WFQ Credit Set 0
10.6.47 QOSC33 - CREDIT_C0_G0
Serial Interface Address:h54A
Bits [5:0]:
Bits [7:6]:
•
W0 - Credit register for WFQ. (Default 6'h04)
Priority type. Define one of the four QoS mode of operation for port 0 (Default 2'00)
- 00: Option 1
- 01: Option 2
- 10: Option 3
- 11: Option 4
See table below:
Queue
P7
P6
P5
P4
P3
P2
P1
P0
Option 1 Bit [7:6] = 2'B00
Option 2 Bit [7:6] = 2'B01
Option 3 Bit [7:6] = 2'B10
Option 4 Bit [7:6] = 2'B11
Credit for WFQ - Bit [5:0]
DELAY BOUND
BE
BE
SP
DELAY BOUND
SP
WFQ
WFQ
W7
W6
W5
W4
W3
W2
W1
W0
50
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
