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MF0320M-11ATXX Datasheet(PDF) 11 Page - Mitsubishi Electric Semiconductor |
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MF0320M-11ATXX Datasheet(HTML) 11 Page - Mitsubishi Electric Semiconductor |
11 / 32 page MITSUBISHI STORAGE CARD Preliminary MF0XXXX-11ATXX series ATA PC CARDS MITSUBISHI ELECTRIC 11 June.2001 Rev. 1.3 Configuration Register Specifications Configuration Option Register This register is used for the configuration of the card configuration status and for the issuing soft reset to the card. D7 D6 D5 D4 D3 D2 D1 D0 SRESET LevIREQ Index Name R/W Description SRESET R/W Setting this bit to “1”, places the card in the reset state. When the host returns this bit to “0”, the function shall enter the same unconfigured, reset state as the card does following a power-up and hardware reset. LevIREQ R/W If this bit is set to “0”, card generates pulse mode interrupt. If this bit is set to “1”, card generates level mode interrupts. Index R/W This bits is used for select operation mode of the card as follows. When Power on, Card Hard Reset and Soft reset, this data is “000000” for the purpose of Memory card interface recognition. Index: 0 -> Memory mapped 1 -> Contiguous I/O mapped 2 -> Primary I/O mapped 3 -> Secondary I/O mapped Configuration and Status Register This register is used for observing the card state. D7 D6 D5 D4 D3 D2 D1 D0 Changed SigChg Iois8 0 0 PwrDwn Intr 0 Name R/W Description Changed R/O This bit indicates that CREADY bit on the Pin Replacement register is set to “1”. When Changed bit is set to “1”, STSCHG# pin is held “L” if the SigChg bit is “1” and the card is configured for the I/O interface. SigChg R/W This bit is set or reset by the host for enabling and disabling the status change signal(STSCHG# pin). When the card is configured I/O card interface and this bit is set to “1”, STSCHG# pin is controlled by Changed bit. If this bit is set to “0”, STSCHG# pin is kept “H”. Iois8 R/W This card is always configured for both 8-bit and 16-bit I/O, so this bit is ignored. PwrDwn R/W When this bit is set to “1”, the card enters Power Down mode. When this bit is reset to “0”, the host is requesting the card to enter the active mode. RREADY bit on Pin Replacement Register becomes BUSY when this bit is changed. RREADY will not become Ready until the power state requested has been entered. This card automatically powers down when it is idle, and powers back up when it receives a command. Intr R/W This bit represents the internal state of the interrupt request. This bit state is available whether I/O card interface has been configured or not. This signal remains true until the condition which caused the interrupt request has been serviced. If interrupts are disabled by the nIEN bit in the Device Control Register, this bit is a zero. Pin Replacement Register This register is used for providing the signal state of READY signal when the card configured I/O card interface. D7 D6 D5 D4 D3 D2 D1 D0 0 0 CREADY 0 1 1 RREADY 0 Name R/W Description CREADY R/W This bit is set to “1” when the RREADY bit changes state. This bit may also be written by the host. RREADY R/W When read, this bit indicates READY pin states. When written, this bit acts as a mask for writing the CREADY bit. Socket and Copy Register This register is used for identification of the card from the other cards. Host can read and write this register. This register should be set by host before this card’s Configuration Option register set. D7 D6 D5 D4 D3 D2 D1 D0 0 Copy Number Socket Number Name R/W Description Copy Number R/W This bit indicates the drive number of the card for twin card configuration. And the host can select and drive one card by comparing the number in this field with the drive number of Drive Head Register. In the way, the host can perform the card’s master/slave organization. Socket Number R/W This field indicates to the card that it is located in the n’th socket. |
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