EP7312_05 datasheet(20/64 Pages) CIRRUS

Part #	EP7312

Description	High-performance, Low-power, System-on-chip with SDRAM & Enhanced with SDRAM & Enhanced

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Manufacturer	CIRRUS [Cirrus Logic]

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©Copyright Cirrus Logic, Inc. 2005

DS508F1

EP7312

High-Performance, Low-Power System on Chip

SDRAM Refresh Cycle

Note:

1. Timings are shown with CAS latency = 2

2. The SDCLK signal may be phase shifted relative to the rest of the SDRAM control and data signals due to uneven loading.

Designers should take care to ensure that delays between SDRAM control and data signals are approximately equal

SDCLK

SDCS

SDRAS

SDCAS

SDQM

[3:0]

SDMWE

SDATA

ADDR

t

CSa

t

RAa

t

CSd

t

RAd

t

CAa

t

CAd

Figure 6. SDRAM Refresh Cycle Timing Measurement

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