EP7312-CB-90 CIRRUS [Cirrus Logic], EP7312-CB-90 Datasheet - Page 22
EP7312-CB-90
Manufacturer Part Number
EP7312-CB-90
Description
HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
Manufacturer
CIRRUS [Cirrus Logic]
Datasheet
1.EP7312-CB-90.pdf
(64 pages)
- Current page: 22 of 64
- Download datasheet (2Mb)
EP7312
High-Performance, Low-Power System on Chip
Static Memory Single Read Cycle
22
EXPRDY
EXPCLK
WRITE
WORD
WORD
nMWE
HALF-
nMOE
nCS
A
D
Note:
1. The cycle time can be extended by integer multiples of the clock period (22 ns at 45 MHz, 27 ns at 36 MHz, 54 ns at
18.432 MHz, and 77 ns at 13 MHz), by either driving EXPRDY low and/or by programming a number of wait states. EXPRDY is
sampled on the falling edge of EXPCLK before the data transfer. If low at this point, the transfer is delayed by one clock period
where EXPRDY is sampled again. EXPCLK need not be referenced when driving EXPRDY, but is shown for clarity.
2. Address, Halfword, Word, and Write hold state until next cycle.
t
WRd
t
CSd
t
Ad
t
t
HWd
WDd
Figure 7. Static Memory Single Read Cycle Timing Measurement
t
EXs
©
C opyright Cirrus Logic, Inc. 2003
t
MOEd
(All Rights Reserved)
t
Ds
t
EXh
t
t
MOEh
CSh
t
Dh
DS508PP5
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