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COMMON MEMORY DESCRIPTION AND OPERATION SSD-CXXX(I)-3600 DATA SHEET
SILICONSYSTEMS PROPRIETARY
This document and the information contained within it is confidential and proprietary to SiliconSystems, Inc.
All unauthorized use and/or reproduction is prohibited.
3600C-04DSR PAGE 40 FEBRUARY 2, 2009
COMMON MEMORY DESCRIPTION AND OPERATION
Common memory space can be accessed when the SiliconDrive is configured
in memory-mapped mode.
COMMON MEMORY READ OPERATIONS
Common memory read operations are issued by asserting CE1#, CE2#, or
both, and OE# low, REG#, and WE# must be inactive.
COMMON MEMORY WRITE OPERATIONS
Common memory write operations are issued by asserting CE1#, CE2#, or
both, and WE# low, REG#, and OE# must be inactive.
Table 26: Common Memory Read Operations
Function Mode REG# CE1# CE2# A0 OE# WE# D[15:8] D[7:0]
Standby X H H X X X High-Z High-Z
Byte Access H L H L L H High-Z Even
HLHHL H High-ZOdd
Word Access H L L X L H Odd Even
Odd Byte Only
Access
HHLXL H OddHigh-Z
Table 27: Common Memory Write Operations
Function Mode REG# CE1# CE2# A0 OE# WE# D[15:8] D[7:0]
Standby X H H X X X High-Z High-Z
Byte Access H L H L H L High-Z Even
HLHHH L High-ZOdd
Word Access H L L X H L Odd Even
Odd Byte Only
Access
H H L X H L Odd High-Z