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TS32M~1GCF80 | 80X CompactFlash Card |
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5.1 I/O Primary and Secondary Address Configurations
Table: Primary and Secondary I/O Decoding
Note:
1)Register 0 is accessed with -CE1 low and -CE2 low (and A0 = Don’t Care) as a word register on the combined Odd Data Bus and Even Data Bus (D15-D0). This register may also be accessed by a pair of byte accesses to the offset 0 with -CE1 low and -CE2 high. Note that the address space of this word register overlaps the address space of the Error and Feature byte-wide registers, which lie at offset 1. When accessed twice as byte register with -CE1 low, the first byte to be accessed is the even byte of the word and the second byte accessed is the odd byte of the equivalent word access.
2)A byte access to register 0 with -CE1 high and -CE2 low accesses the error (read) or feature (write) register.
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