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AM29DL642G Datasheet(PDF) 20 Page - Advanced Micro Devices |
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AM29DL642G Datasheet(HTML) 20 Page - Advanced Micro Devices |
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20 / 54 page  18 Am29DL642G June 10, 2005 PRELIMINARY To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 13. This method does not require V ID. Refer to the Autoselect Com- mand Sequence section for more information. Table 6. Am29DL642G Autoselect Codes, (High Voltage Method) Legend: L = Logic Low = V IL, H = Logic High = VIH, BA = Bank Address, SA = Sector Address, X = Don’t care. Description CE# OE# WE# A21 to A12 A11 to A10 A9 A8 to A7 A6 A5 to A4 A3 A2 A1 A0 DQ15 to DQ0 DQ7 to DQ0 Manufacturer ID: AMD LL H BA X V ID X L X LLLL X 01h Read Cycle 1 LL H BA X V ID X L X L L L H 22h 7Eh Read Cycle 2 L H H H L 22h 02h Read Cycle 3 L HHHH 22h 01h Sector Protection Verification LL H SA X V ID XLX H L X 01h (protected), 00h (unprotected) SecSi Indicator Bit (DQ7) LL H BA X V ID XLXL L H H X 80h (factory locked), 00h (not factory locked) |
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