參數(shù)資料
型號: CYNCP80192
英文描述: Network Processing
中文描述: 網(wǎng)絡(luò)處理
文件頁數(shù): 27/42頁
文件大?。?/td> 679K
代理商: CYNCP80192
CYNCP80192
Document #: 38-02043 Rev. *B
Page 27 of 42
12.0
SyncBurst Pipelined SSRAM Interface Mode (Late Write)
The ADR and control signals (R/W_L, BW_L[7:0], CE_L, CE2, CE2_L) are sampled on a CLK edge. For Write cycles, the data
is sampled one cycle later; for Read cycles, the data is available to the processor one cycle later. Both Write- and Read-cycle
latency is one cycle, and there is no gap required between Read and Write operation. Every cycle is available for the network
processor(s) for full utilization of the bus bandwidth. See
Figure 12-1
.
Note
. BWE_L is not used in this mode and should be tied
inactive.
CLK
1
2
3
4
5
6
7
ADR[9:0]
A1
A2
BW_L[7:0]
DATA[63:0]
D1
Q2
D3
Q4
CE_L
CE_2
R/W_L
STRB
CPID[7:0]
CPID
Write
Read
NOP
Read
8
Write
A4
A5
A3
Q5
Figure 12-1. SyncBurst Pipelined SSRAM Interface (Late Write)
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