參數(shù)資料
型號: MVTX2803AG
廠商: ZARLINK SEMICONDUCTOR INC
元件分類: 網(wǎng)絡(luò)接口
英文描述: Unmanaged 8-Port 1000 Mbps Ethernet Switch
中文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA596
封裝: 40 X 40 MM, 2.33 MM HEIGHT, MS-034, HSBGA-596
文件頁數(shù): 48/127頁
文件大?。?/td> 1706K
代理商: MVTX2803AG
MVTX2803
Data Sheet
48
Zarlink Semiconductor Inc.
10.6.15 PRG – Port Reservation for Giga ports
I
2
C Address: h0B9, Serial Interface Address h50F
Accessed by serial interface and I
2
C (R/W)
FCB Reservation
10.6.16 SFCB – Share FCB Size
I
2
C Address: h04E, Serial Interface Address h510
Accessed by serial interface and I
2
C (R/W)
7
4
3
0
Buffer low thd
Per source buffer Reservation
Bit [3:0]:
Per source buffer reservation. Define the space in the FDB reserved for each port. Expressed in
multiples of 16 packets. For each packet 1536 bytes are reserved in the memory.
Default:
4’hA for 4MB memory
4’h6 for 2MB memory
4’h3 for 1MB memory
Bits [7:4]:
Expressed in multiples of 16 packets. Threshold for dropping all best effort frames when destination
port best effort queues reach UCC threshold and shared pool is all used and source port reservation
is at or below the PRG[7:4] level. Also the threshold for initiating UC flow control.
Default:
4’h6 for 4MB memory
4’h2 for 2MB memory
4’h1 for 1MB memory
7
0
Shared buffer size
Bits [7:0]:
Expressed in multiples of 8. Buffer reservation for shared pool.
(Default 4G & 4M = 8’d62)
(Default 4G & 2M = 8’d20)
(Default 4G & 1M = 8'd08)
(Default 8G & 4M = 8’d150)
(Default 8G & 2M = 8’d55)
(Default 8G & 1M = 8'd25)
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