W83L518D_05 Datasheet, PDF (19/25 Pages) Winbond – Integrated Media Reader

W83L518D
CRF4 (GP20 ~ GP27 data register. Default 00h)
If a port is programmed to be an output port, its respective bit can be read/written and output to
respective pin. If a port is programmed to be an input port, its respective bit reflects what is on
respective pin.
CRF5 (GP20 ~ GP27 inversion register. Default 00h)
When set to "1", respective incoming/outgoing port value is inverted. When set to "0", respective
incoming/outgoing port value is the same as in data register.
6.8 Logical Device 3 (SD Memory Interface)
CR30 (Default 0x00)
Bit [7:1]: Reserved.
Bit 0: Logical device active bit.
= 0 Logical device is inactive.
= 1 Activates the logical device.
CR60, CR61 (Default 0x00, 0x00)
These two registers select SD Card interface base address [0x100:0xFFF] on 8-byte boundary.
CR70 (Default 0x00)
Bit [7:4]: Reserved.
Bit [3:0]: These bits select IRQ resource for SD interface.
CR74 (Default 0x00)
Bit [7:4]: Reserved.
Bit [3:0]: These bits select DRQ resource for SD interface.
CRF0 (Default 0x01)
Bit [7:6]: Reserved.
Bit 5: Set the output value of the DATA3 pin when bit4 is setted 1.
= 0 The DATA3 pin will output low.
= 1 The DATA3 pin will output high.
Bit 4: Set the DATA3 (MS1 or MSB1) pin to output pin.
= 0 Set the DATA3 pin to bi-direction pin.
= 1 Set the DATA3 pin to output pin.
Bit 3: Reserved.
Bit 2: Select the pole of the GP11 card-detect pin.
= 0 When detecting the low signal indicate the card is inserted and high signal
indicate the card is extracted.
= 1 When detecting the high signal incicate the card is inserted and low signal
indicate the card is extracted.
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Publication Release Date: May 11, 2005
Revision 1.0