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TE28F800C3BA90

Intel Advanced+ Boot Block Flash Memory (C3)

Intel 

Intel£ Advanced+ Boot Block Flash Memory (C3)

Table 6. Device Identification Codes

Item

Address1

Base

Offset

Data

Description

Manufacturer ID

Block

0x00

0x0089

0x88C0

8-Mbit Top Boot Device

0x88C1

8-Mbit Bottom Boot Device

0x88C2

16-Mbit Top Boot Device

Device ID

Block

0x01

0x88C3

0x88C4

16-Mbit Bottom Boot Device

32-Mbit Top Boot Device

0x88C5

32-Mbit Bottom Boot Device

0x88CC

64-Mbit Top Boot Device

0x88CD

64-Mbit Bottom Boot Device

Block Lock Status2

Block

0x02

DQ0 = 0b0

DQ0 = 0b1

Block is unlocked

Block is locked

Block Lock-Down Status2

Block

0x02

DQ1 = 0b0

DQ1 = 0b1

Block is not locked-down

Block is locked down

Protection Register Lock Status Block

0x80

Lock Data

Protection Register

Block

0x81 -

0x88

Multiple reads required to read

Register Data the entire 128-bit Protection

Register.

NOTES:

1. The address is constructed from a base address plus an offset. For example, to read the Block Lock Status

for block number 38 in a bottom boot device, set the address to 0x0F8000 plus the offset (0x02), i.e.

0x0F8002. Then examine DQ0 of the data to determine if the block is locked.

2. See Section 5.2, “Reading Block-Lock Status” on page 28 for valid lock status.

4.1.3

CFI Query

The CFI query mode outputs Common Flash Interface (CFI) data after issuing the Read Query

Command (0x98). The CFI data structure contains information such as block size, density,

command set, and electrical specifications. Once in this mode, read cycles from addresses shown in

Appendix C, “Common Flash Interface,” retrieve the specified information. To return to read-array

mode, issue the Read Array command (0xFF).

4.1.4

Read Status Register

The status register indicates the status of device operations, and the success/failure of that

operation. The Read Status Register (0x70) command causes subsequent reads to output data from

the status register until another command is issued. To return to reading from the array, issue a

Read Array (0xFF) command.

The status-register bits are output on DQ[7:0]. The upper byte, DQ[15:8], outputs 0x00 when a

Read Status Register command is issued.

20

Datasheet

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