參數(shù)資料
型號(hào): MDS212
廠商: Zarlink Semiconductor Inc.
英文描述: 12-Port 10/100Mbps Ethernet Switch
中文描述: 12端口10/100Mbps以太網(wǎng)交換機(jī)
文件頁(yè)數(shù): 72/111頁(yè)
文件大?。?/td> 1609K
代理商: MDS212
MDS212
Data Sheet
72
Zarlink Semiconductor Inc.
18.2.3 Buffer Memory Interface Register
18.2.3.1 MWARS - Memory Write Address Register - Single Cycle
Access:
Address:
Zero-Wait-State,
h780
via FIFO,
Write
Bit [0]
LK
Lock Flag (for internal memory only)
LK=0 UnlockLK=1 Lock
Bit [1]
SP
Swap Byte Order
Bit [20:2]
MA [20:2]
Buffer memory address Bit [20:2] – (Bit [1:0] = 00)
Bit [21]
Reserved
Bit [22]
I/E
Indicates the Address is Internal or External memory
I/E=0 Internal memory
I/E=1 External memory
Bit [27:23]
Count
Must be 00001
Bit [31:28]
BE [3:0]
Byte lane enables
31
28
27
26
24
23
22
21
20
3
2
1 0
BE[3:0]
00001
I/E
Address MA[20:3]
SP
LK
CPU Bus Type
Bit [31]
Bit [30]
Bit [29]
Bit [28]
Little Endian
BE [3]
BE [2]
BE [1]
BE [0]
Big Endian
BE [0]
BE [1]
BE [2]
BE [3]
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