參數(shù)資料
型號(hào): CYNPC80192-BGC
廠商: CYPRESS SEMICONDUCTOR CORP
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Network Database Coprocessor
中文描述: SPECIALTY TELECOM CIRCUIT, PBGA388
封裝: BGA-388
文件頁數(shù): 26/42頁
文件大小: 305K
代理商: CYNPC80192-BGC
CYNCP80192
Document #: 38-02043 Rev. *B
Page 26 of 42
11.0
SyncBurst Pipelined SSRAM Interface (Early 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 11-1
.
Note
. BWE_L is not used in this mode and should be tied
inactive.
CLK
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
A4
A5
A3
Write
Figure 11-1. SyncBurst Pipelined SSRAM Interface (Early Write)
1
2
3
4
5
6
7
8
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