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AM29F400B Datasheet(PDF) 11 Page - Advanced Micro Devices |
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AM29F400B Datasheet(HTML) 11 Page - Advanced Micro Devices |
11 / 42 page 10 Am29F400B Table 2. Am29F400BT Top Boot Block Sector Address Table Table 3. Am29F400BB Bottom Boot Block Sector Address Table Note: Address range is A17:A-1 in byte mode and A17:A0 in word mode.See the “Word/Byte Configuration” section for more information. 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. Sector A17 A16 A15 A14 A13 A12 Sector Size (Kbytes/ Kwords) Address Range (in hexadecimal) (x8) Address Range (x16) Address Range SA0 0 0 0 X X X 64/32 00000h–0FFFFh 00000h–07FFFh SA1 0 0 1 X X X 64/32 10000h–1FFFFh 08000h–0FFFFh SA2 0 1 0 X X X 64/32 20000h–2FFFFh 10000h–17FFFh SA3 0 1 1 X X X 64/32 30000h–3FFFFh 18000h–1FFFFh SA4 1 0 0 X X X 64/32 40000h–4FFFFh 20000h–27FFFh SA5 1 0 1 X X X 64/32 50000h–5FFFFh 28000h–2FFFFh SA6 1 1 0 X X X 64/32 60000h–6FFFFh 30000h–37FFFh SA7 1 1 1 0 X X 32/16 70000h–77FFFh 38000h–3BFFFh SA8 1 1 1 1 0 0 8/4 78000h–79FFFh 3C000h–3CFFFh SA9 1 1 1 1 0 1 8/4 7A000h–7BFFFh 3D000h–3DFFFh SA10 1 1 1 1 1 X 16/8 7C000h–7FFFFh 3E000h–3FFFFh Sector A17 A16 A15 A14 A13 A12 Sector Size (Kbytes/Kwords) Address Range (in hexadecimal) (x8) Address Range (x16) Address Range SA0 0 0 0 0 0 X 16/8 00000h–03FFFh 00000h–01FFFh SA1 0 0 0 0 1 0 8/4 04000h–05FFFh 02000h–02FFFh SA2 0 0 0 0 1 1 8/4 06000h–07FFFh 03000h–03FFFh SA3 0 0 0 1 X X 32/16 08000h–0FFFFh 04000h–07FFFh SA4 0 0 1 X X X 64/32 10000h–1FFFFh 08000h–0FFFFh SA5 0 1 0 X X X 64/32 20000h–2FFFFh 10000h–17FFFh SA6 0 1 1 X X X 64/32 30000h–3FFFFh 18000h–1FFFFh SA7 1 0 0 X X X 64/32 40000h–4FFFFh 20000h–27FFFh SA8 1 0 1 X X X 64/32 50000h–5FFFFh 28000h–2FFFFh SA9 1 1 0 X X X 64/32 60000h–6FFFFh 30000h–37FFFh SA10 1 1 1 X X X 64/32 70000h–7FFFFh 38000h–3FFFFh |
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