| 전자부품 데이터시트 검색엔진 |
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CS5535 데이터시트(PDF) 322 Page - National Semiconductor (TI) |
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CS5535 데이터시트(HTML) 322 Page - National Semiconductor (TI) |
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322 / 555 page ![]() www.national.com 322 Revision 0.8 Floppy Port Register Descriptions (Continued) 5.7.1.3 Floppy Port 372h Shadow (FLPY_3F2_SHDW) 5.7.1.4 Floppy Port 377h Shadow (FLPY_377_SHDW) MSR Address 51400032h Type RO Reset Value xxh FLPY_3F2_SHDW Register Map 76543 210 FLPY_PORT_372_VAL FLPY_3F2_SHDW Bit Descriptions Bit Name Description 7:0 FLPY_PORT_372 _VAL Floppy Port Shadow Register Value Last Written to I/O Port 372h. Required for support of FDC power ON/OFF and Zero Volt Suspend/Resume coherency. This register is a copy of an I/O register that cannot safely be directly read. Value in reg- ister is not deterministic of when the register is being read. It is provided here to assist in a Save-to-Disk operation. MSR Address 51400033h Type RO Reset Value xxh FLPY_377_SHDW Register Map 76543 210 FLPY_PORT_377_VAL FLPY_377_SHDW Bit Descriptions Bit Name Description 7:0 FLPY_PORT_377 _VAL Floppy Port Shadow Register Value Last Written to I/O Port 377h. Required for support of FDC power ON/OFF and Zero Volt Suspend/Resume coherency. This register is a copy of an I/O register that cannot safely be directly read. Value in reg- ister is not deterministic of when the register is being read. It is provided here to assist in a Save-to-Disk operation. |
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