參數(shù)資料
型號(hào): QL82SD-PS484
廠商: Electronic Theatre Controls, Inc.
英文描述: 10 High Speed Bus LVDS Serial Links bandwidth up to 5 Gbps
中文描述: 10高速總線LVDS串行鏈路的帶寬高達(dá)5Gbps的
文件頁(yè)數(shù): 29/60頁(yè)
文件大?。?/td> 3838K
代理商: QL82SD-PS484
2002 QuickLogic Corporation
QL82SD Device Data Sheet Rev C
Preliminary
29
www.quicklogic.com
RAM Cell Read Timing
Table 28: RAM Cell Synchronous and Asynchronous Read Timing
Figure 42: RAM Cell Synchronous and Asynchronous Read Timing
Symbol
Parameter
Propagation
delay (ns)
RAM Cell Synchronous Read Timing
t
SRA
RA setup time to RCLK: the amount of time the READ ADDRESS
must be stable before the active edge of the READ CLOCK
0.686
t
HRA
RA hold time to RCLK: the amount of time the READ ADDRESS
must be stable after the active edge of the READ CLOCK
0
t
SRE
RE setup time to WCLK: the amount of time the READ ENABLE
must be stable before the active edge of the READ CLOCK
0.243
t
HRE
RE hold time to WCLK: the amount of time the READ ENABLE
must be stable after the active edge of the READ CLOCK
0
t
RCRD
RCLK to RD: the amount of time between the active READ CLOCK
edge and the time when the data is available at RD
4.38
RAM Cell Asynchronous Read Timing
r
PDRD
RA to RD: amount of time between when the READ ADDRESS is
input and when the DATA is output
2.06
RE
RD
RCLK
RA
TSRA
THRA
TSRE
THRE
OLD data
NEW data
TRCRD
RPDRD
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