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TS1GCF80 Datasheet(PDF) 33 Page - Transcend Information. Inc. |
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TS1GCF80 Datasheet(HTML) 33 Page - Transcend Information. Inc. |
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33 / 82 page  T T TS S S3 3 32 2 2M M M~ ~ ~1 1 1G G GC C CF F F8 8 80 0 0 80X CompactFlash Card Transcend Information Inc. V1.1 33 port is addressed, the signal -IOIS16 is asserted by the CompactFlash Storage. Otherwise, the -IOIS16 signal is de-asserted. When a 16 bit transfer is attempted, and the -IOIS16 signal is not asserted by the CompactFlash Storage, the system shall generate a pair of 8 bit references to access the word‘s even byte and odd byte. The CompactFlash Storage Card permits both 8 and 16 bit accesses to all of its I/O addresses, so -IOIS16 is asserted for all addresses to which the CompactFlash Storage responds. The CompactFlash Storage Card may request the host to extend the length of an input cycle until data is ready by asserting the -WAIT signal at the start of the cycle. Function Code -REG -CE2 -CE1 A0 -IORD -IOWR D15-D8 D7-D0 Standby Mode X H H X X X High Z High Z Byte Input Access (8 bits) L L H H L L L H L L H H High Z High Z Even-Byte Odd-Byte Byte Output Access (8 bits) L L H H L L L H H H L L Don’t Care Don’t Care Even-Byte Odd-Byte Word Input Access (16 bits) L L L L L H Odd-Byte Even-Byte Word Output Access (16 bits) L L L L H L Odd-Byte Even-Byte I/O Read Inhibit H X X X L H Don’t Care Don’t Care I/O Write Inhibit H X X X H L High Z High Z High Byte Input Only (8 bits) L L H X L H Odd-Byte High Z High Byte Output Only (8 bits) L L H X H L Odd-Byte Don’t Care 4.8 Common Memory Transfer Function The Common Memory transfer to or from the CompactFlash Storage can be either 8 or 16 bits. Table: Common Memory Function Function Code -REG -CE2 -CE1 A0 -OE -WE D15-D8 D7-D0 Standby Mode X H H X X X High Z High Z Byte Read Access (8 bits) H H H H L L L H L L H H High Z High Z Even-Byte Odd-Byte Byte Write Access (8 bits) H H H H L L L H H H L L Don’t Care Don’t Care Even-Byte Odd-Byte Word Read Access (16 bits) H L L X L H Odd-Byte Even-Byte Word Write Access (16 bits) H L L X H L Odd-Byte Even-Byte Odd Byte Read Only (8 bits) H L H X L H Odd-Byte High Z Odd Byte Write Only (8 bits) H L H X H L Odd-Byte Don’t Care 4.9 True IDE Mode I/O Transfer Function Table: PCMCIA Mode I/O Function |
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