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COMMON MEMORY DESCRIPTION AND OPERATION |
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COMMON MEMORY DESCRIPTION AND OPERATION
Common memory space can be accessed when the SiliconDrive is configured in
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.
Table 26: Common Memory Read Operations
Function Mode | REG# | CE1# | CE2# | A0 | OE# | WE# | D[15:8] | D[7:0] |
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Standby | X | H | H | X | X | X | ||
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Byte Access | H | L | H | L | L | H | Even | |
| H | L | H | H | L | H | Odd | |
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Word Access | H | L | L | X | L | H | Odd | Even |
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Odd Byte Only | H | H | L | X | L | H | Odd | |
Access |
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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 27: Common Memory Write Operations
Function Mode | REG# | CE1# | CE2# | A0 | OE# | WE# | D[15:8] | D[7:0] |
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Standby | X | H | H | X | X | X | ||
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Byte Access | H | L | H | L | H | L | Even | |
| H | L | H | H | H | L | Odd | |
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Word Access | H | L | L | X | H | L | Odd | Even |
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Odd Byte Only | H | H | L | X | H | L | Odd | |
Access |
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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.
PAGE 41 | FEBRUARY 2, 2009 |