MVTX2804 Datasheet, PDF (94/174 Pages) Zarlink Semiconductor Inc – 8-Port 1000 Mbps Ethernet Distributed Switch

MVTX2804
Data Sheet
11.9.13.4 QOSC27 - BYTE_C5_G6
• I²C Address h07C, CPU Address:h53E
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)
11.9.13.5 QOSC28 - BYTE_C6_G6
• I²C Address h07D, CPU Address:h53F
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)
11.9.13.6 QOSC29 - BYTE_C7_G6
• I²C Address h07E, CPU Address:h540
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)
QOSC24 through QOSC29 represent the values F-A in Table 3. They are per-queue byte thresholds for random
early drop. QOSC29 represents A, and QOSC24 represents F. See QoS application note for more information.
11.9.14 Classes Byte Gigabit Port 7
• Accessed by CPU; serial interface and I²C (R/W):
11.9.14.1 QOSC2A - BYTE_C2_G7
• I²C Address h07F, CPU Address:h541
Bits [7:0]:
• Byte count threshold for C2 queue WRED (Default 8'h28)
• (1024 byte/unit when Delay Bound is used)
• (1024 byte/unit when WFQ is used)
11.9.14.2 QOSC2B - BYTE_C3_G7
• I²C Address h080, CPU Address:h542
Bits [7:0]:
• Byte count threshold for C3 queue WRED (Default 8'h28)
• (512 byte/unit when Delay Bound is used)
• (1024 byte/unit when WFQ is used)
11.9.14.3 QOSC2C - BYTE_C4_G7
• I²C Address h081, CPU Address:h543
Bits [7:0]:
• Byte count threshold for C4 queue WRED (Default 8'h28)
• (256 byte/unit when Delay Bound is used)
• (1024 byte/unit when WFQ is used)
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