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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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AM79C973VCW bảng dữ liệu(PDF) 111 Page - Advanced Micro Devices |
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AM79C973VCW bảng dữ liệu(HTML) 111 Page - Advanced Micro Devices |
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111 / 304 page  Am79C973/Am79C975 111 P R E L I M INARY Table 23. Legal I/O Accesses in Double Word I/O Mode (DWIO =1) Table 21. Legal I/O Accesses in Word I/O Mode (DWIO = 0) AD[4:0] BE[3:0] Type Comment 0XX00 1110 RD Byte read of APROM location 0h, 4h, 8h or Ch 0XX01 1101 RD Byte read of APROM location 1h, 5h, 9h or Dh 0XX10 1011 RD Byte read of APROM location 2h, 6h, Ah or Eh 0XX11 0111 RD Byte read of APROM location 3h, 7h, Bh or Fh 0XX00 1100 RD Word read of APROM locations 1h (MSB) and 0h (LSB), 5h and 4h, 8h and 9h or Ch and Dh 0XX10 0011 RD Word read of APROM locations 3h (MSB) and 2h (LSB), 7h and 6h, Bh and Ah or Fh and Eh 10000 1100 RD Word read of RDP 10010 0011 RD Word read of RAP 10100 1100 RD Word read of Reset Register 10110 0011 RD Word read of BDP 0XX00 1100 WR Word write to APROM locations 1h (MSB) and 0h (LSB), 5h and 4h, 8h and 9h or Ch and Dh 0XX10 0011 WR Word write to APROM locations 3h (MSB) and 2h (LSB), 7h and 6h, Bh and Ah or Fh and Eh 10000 1100 WR Word write to RDP 10010 0011 WR Word write to RAP 10100 1100 WR Word write to Reset Register 10110 0011 WR Word write to BDP 10000 0000 WR DWord write to RDP, switches device to DWord I/O mode Table 22. I/O Map In DWord I/O Mode (DWIO =1) Offset No. of Bytes Register 00h - 0Fh 16 APROM 10h 4 RDP 14h 4 RAP (shared by RDP and BDP) 18h 4 Reset Register 1Ch 4 BDP AD[4:0] BE[3:0] Type Comment 0XX00 0000 RD DWord read of APROM locations 3h (MSB) to 0h (LSB), 7h to 4h, Bh to 8h or Fh to Ch 10000 0000 RD DWord read of RDP 10100 0000 RD DWord read of RAP 11000 0000 RD DWord read of Reset Register 0XX00 0000 WR DWord write to APROM locations 3h (MSB) to 0h (LSB), 7h to 4h, Bh to 8h or Fh to Ch 10000 0000 WR DWord write to RDP 10100 0000 WR DWord write to RAP 11000 0000 WR DWord write to Reset Register |
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