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PC28F256J3A-150 数据表(PDF) 54 Page - Intel Corporation |
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PC28F256J3A-150 数据表(HTML) 54 Page - Intel Corporation |
54 / 72 page 256-Mbit J3 (x8/x16) 54 Datasheet A.3 Block Status Register The block status register indicates whether an erase operation completed successfully or whether a given block is locked or can be accessed for flash program/erase operations. A.4 CFI Query Identification String The CFI Query Identification String provides verification that the component supports the Common Flash Interface specification. It also indicates the specification version and supported vendor-specified command set(s). Table 25. Query Structure Offset Sub-Section Name Description Notes 00h Manufacturer Code 1 01h Device Code 1 (BA+2)h(2) Block Status Register Block-Specific Information 1,2 04-0Fh Reserved Reserved for Vendor-Specific Information 1 10h CFI Query Identification String Reserved for Vendor-Specific Information 1 1Bh System Interface Information Command Set ID and Vendor Data Offset 1 27h Device Geometry Definition Flash Device Layout 1 P(3) Primary Intel-Specific Extended Query Table Vendor-Defined Additional Information Specific to the Primary Vendor Algorithm 1,3 NOTES: 1. Refer to the Query Structure Output section and offset 28h for the detailed definition of offset address as a function of device bus width and mode. 2. BA = Block Address beginning location (i.e., 02000h is block 2’s beginning location when the block size is 128 Kbyte). 3. Offset 15 defines “P” which points to the Primary Intel-Specific Extended Query Table. Table 26. Block Status Register Offset Length Description Address Value (BA+2)h(1) 1 Block Lock Status Register BA+2: --00 or --01 BSR.0 Block Lock Status 0 = Unlocked 1 = Locked BA+2: (bit 0): 0 or 1 BSR 1–7: Reserved for Future Use BA+2: (bit 1–7): 0 NOTE: 1. BA = The beginning location of a Block Address (i.e., 008000h is block 1’s (64-KB block) beginning location in word mode). Table 27. CFI Identification (Sheet 1 of 2) Offset Length Description Add. Hex Code Value 10h 3 Query-unique ASCII string “QRY” 10 --51 “Q” 11: --52 “R” 12: --59 “Y” 13h 2 Primary vendor command set and control interface ID code. 13: --01 16-bit ID code for vendor-specified algorithms 14: --00 15h 2 Extended Query Table primary algorithm address 15: --31 16: --00 17h 2 Alternate vendor command set and control interface ID code. 17: --00 |
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