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AM29LV002BT-55REF 데이터시트(PDF) 12 Page - Advanced Micro Devices |
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AM29LV002BT-55REF 데이터시트(HTML) 12 Page - Advanced Micro Devices |
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12 / 41 page ![]() 10 Am29LV002B 21520D5 October 11, 2006 D A TA SH EET Table 2. Am29LV002BT Top Boot Block Sector Address Table Table 3. Am29LV002BB Bottom Boot Block Sector Address Table Autoselect Mode The autoselect mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programming algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID (11.5 V to 12.5 V) on address pin A9. Address pins A6, A1, and A0 must be as shown in Table 4. In addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits (see Tables 2 and 3). Table 4 shows the remaining address bits that are don’t care. When all necessary bits have been set as required, the programming equipment may then read the corre- sponding identifier code on DQ7–DQ0. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 5. This method does not require VID. See “Command Definitions” for details on using the autoselect mode. Table 4. Am29LV002B Autoselect Codes (High Voltage Method) L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care. Sector A17 A16 A15 A14 A13 Sector Size (Kbytes) Address Range (in hexadecimal) SA0 0 0 X X X 64 00000h-0FFFFh SA1 0 1 X X X 64 10000h-1FFFFh SA2 1 0 X X X 64 20000h-2FFFFh SA3 1 1 0 X X 32 30000h-37FFFh SA4 1 1 1 0 0 8 38000h-39FFFh SA5 1 1 1 0 1 8 3A000h-3BFFFh SA6 11 11 X 16 3C000h-3FFFFh Sector A17 A16 A15 A14 A13 Sector Size (Kbytes) Address Range (in hexadecimal) SA0 0 0 0 0 X 16 00000h-03FFFh SA1 0 0 0 1 0 8 04000h-05FFFh SA2 0 0 0 1 1 8 06000h-07FFFh SA3 0 0 1 X X 32 08000h-0FFFFh SA4 0 1 X X X 64 10000h-1FFFFh SA5 1 0 X X X 64 20000h-2FFFFh SA6 1 1 X X X 64 30000h-3FFFFh Description CE# OE# WE# A17 to A13 A12 to A10 A9 A8 to A7 A6 A5 to A2 A1 A0 DQ7 to DQ0 Manufacturer ID: AMD L L H X X VID XLXL L 01h Device ID: Am29LV002BT (Top Boot Block) LL H X X VID XLXL H 40h Device ID: Am29LV002BB (Bottom Boot Block) LL H X X VID XLXL H C2h Sector Protection Verification L L H SA X VID XLX H L 01h (protected) 00h (unprotected) |
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