BQ26100_15 Datasheet, PDF (13/29 Pages) Texas Instruments – Based Security and Authentication IC

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bq26100
SLUS696B – JUNE 2006 – REVISED AUGUST 2015
Read
Page
Flow
M/F = 0xC3
Read
Memory
Flow
M/F = 0xF0
Write
Memory
Flow
M/F = 0x0F
(1) _{Master TX:}
16-bit address, A
(1) _{Master TX:}
16-bit address, A
(1) _{Master TX:}
16-bit address, A
Master RX:
CRC of M/F cmd & A
Master RX:
CRC of M/F cmd & A
Master TX:
8-bit data, D
Master RX:
8-bit data @ A
A=A+1
Master RX:
8-bit data @ A
A=A+1
A[4:0] = Last
address of page
NO
YES
Master RX:
CRC of all data transmitted
A = 0x007F?
NO
YES
Master RX:
CRC of all data transmitted
Master RX:
CRC of M/F cmd, A & D
Master TX:
Programming Pulse
Master RX:
CRC of preloaded
A[7:0] & shifted D
Master RX:
D
A < 0x007F?
NO
ROM
Function
Flow
YES
ROM
Function
Flow
A < 0x007F?
NO
YES
ROM
Function
Flow
(1) 16-Bit address is sent with lower 8-bit address followed by higher 8-bit address with least significant bit first.
Figure 12. General Memory OTP Write/Read Flows
Master TX:
8-bit data, D
CRC = A[7:0]
A = A +1
7.5.2.1.2 General Use — Memory Function Commands 0xFA (Read) and 0xAF (Write)
The general use space is erased to read 0x00. Data written to the general space is ORed with data already
present at the address to be written. A bit can only be flipped from 0 to 1.
Table 3. General Memory Space Addressing
ADDRESSES
0x001F – 0x0000
FUNCTION
Page 4 – 32 bytes general use
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