User manual TRANSCEND TS1GCF120 QUICK INSTRUCTION GUIDE

[. . . ] 6) If DMA operations are not used, the signal should be held high or tied to VCC by the host. For proper operation in older hosts: while DMA operations are not active, the card shall ignore this signal, including a floating condition Transcend Information Inc. 6 V1. 7 TS32M~1GCF80 TS32M~1GCF80 3. 2 Signal Description Signal Name A10 ­ A00 (PC Card Memory Mode) 80X CompactFlash Card Dir. I Pin Description 8, 10, 11, 12, These address lines along with the -REG signal are used to select the following: 14, 15, 16, 17, The I/O port address registers within the CompactFlash Storage Card , the 18, 19, 20 memory mapped port address registers within the CompactFlash Storage Card, a byte in the card's information structure and its configuration control and status registers. A10 ­ A00 (PC Card I/O Mode) This signal is the same as the PC Card Memory Mode signal. I A02 - A00 (True IDE Mode) BVD1 (PC Card Memory Mode) 18, 19, 20 In True IDE Mode, only A[02:00] are used to select the one of eight registers in the Task File, the remaining address lines should be grounded by the host. This signal is asserted high, as BVD1 is not supported. I/O 46 -STSCHG (PC Card I/O Mode) Status Changed This signal is asserted low to alert the host to changes in the READY and Write Protect states, while the I/O interface is configured. [. . . ] 3) Implement a socket adapter that can be programmed to (conditionally) tri-state D7 of I/0 address 3F7h/377h when a CompactFlash Storage Card is installed and conversely to tristate D6-D0 of I/O address 3F7h/377h when a floppy controller is installed. 4) Do not use the CompactFlash Storage Card's Drive Address register. This may be accomplished by either a) If possible, program the host adapter to enable only I/O addresses 1F0h-1F7h, 3F6h (or 170h-177h, 176h) to the CompactFlash Storage Card or b) if provided use an additional Primary / Secondary configuration in the CompactFlash Storage Card which does not respond to accesses to I/O locations 3F7h and 377h. With either of these implementations, the host software shall not attempt to use information in the Drive Address Register. Bit 6 (-WTG): this bit is 0 when a write operation is in progress; otherwise, it is 1. Bit 5 (-HS3): this bit is the negation of bit 3 in the Drive/Head register. Transcend Information Inc. 42 V1. 7 TS32M~1GCF80 TS32M~1GCF80 Bit 4 (-HS2): this bit is the negation of bit 2 in the Drive/Head register. Bit 3 (-HS1): this bit is the negation of bit 1 in the Drive/Head register. Bit 2 (-HS0): this bit is the negation of bit 0 in the Drive/Head register. Bit 0 (-nDS0): this bit is 0 when the drive 0 is active and selected. 80X CompactFlash Card 5. 6 CF-ATA Command Description This section defines the software requirements and the format of the commands the host sends to the CompactFlash Storage Cards. Commands are issued to the CompactFlash Storage Card by loading the required registers in the command block with the supplied parameters, and then writing the command code to the Command Register. There are three classes (see Table 38: CF-ATA Command Set) of command acceptance, all dependent on the host not issuing commands unless the CompactFlash Storage Card is not busy (BSY=0). When Word 0 of the Identify drive information is 848Ah then the device is a CompactFlash Storage Card and complies with the CFA specification and CFA command set. It is recommended that PCMCIA modes of operation report only the 848Ah value as they are always intended as removable devices. Some operating systems require Bit 6 of Word 0 to be set to 1 (Non-removable device) to use the card as the root storage device. The Card must be the root storage device when a host completely replaces conventional disk storage with a CompactFlash Card in True IDE mode. To support this requirement and provide capability for any future removable media Cards, alternatehandling of Word 0 is permitted. Bits 15-0: CF Preferred Alternate Configuration Values 044Ah: This is the alternate value of Word 0 turns on ATA device and turns off Removable Media and Removable Device while preserving all Retired bits in the word. 0040h: This is the alternate value of Word 0 turns on ATA device and turns off Removable Media and Removable Device while zeroing all Retired bits in the word Bit 15-12: Configuration Flag If bits 15:12 are set to 8h then Word 0 shall be 848Ah. If bits 15:12 are set to 0h then Bits 11:0 are set using the definitions below and the Card is required to support for the CFA command set and report that in bit 2 of Word 83. It is recommended that the value of these bits be either the preferred value of 0h or the value of 4h that preserves the corresponding bits from the 848Ah CF signature value. Bit 7: Removable Media Device If Bit 7 is set to 1, the Card contains media that can be removed during Card operation. This bit will be considered for obsolescence in a future revision of this standard. [. . . ] DRQ qualification of the transfer is required only at the start of the data block, not on each sector. The block count of sectors to be transferred without intervening interrupts is programmed by the Set Multiple Mode command, which shall be executed prior to the Write Multiple command. When the Write Multiple command is issued, the Sector Count Register contains the number of sectors (not the number of blocks or the block count) requested. If the number of requested sectors is not evenly divisible by the block count, as many full blocks as possible are transferred, followed by a final, partial block transfer. The partial block transfer is for n sectors, where: Transcend Information Inc. 68 V1. 7 TS32M~1GCF80 TS32M~1GCF80 n = (sector count) modulo (block count). 80X CompactFlash Card If the Write Multiple command is attempted before the Set Multiple Mode command has been executed or when Write Multiple commands are disabled, the Write Multiple operation shall be rejected with an aborted command error. [. . . ]