NXP Semiconductors LPC43Sxx, User Manual

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User manual Rev. 2.1 — 10 December 2015 51 of 1441
NXP Semiconductors
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Chapter 4: LPC43xx/LPC43Sxx One-Time Programmable (OTP)
4.5.1 OTP function allocation
Remark: See Section 4.1 for availability of OTP functions for different boot ROM versions.
Table 20. OTP function allocation
Function Offset Description OTP bank
programmed OTP memory
name
otp_Init 0x00 Initializes OTP controller.
Parameter - void
Return- unsigned: see the general error codes.
- -
otp_ProgBootSrc 0x04 Programs boot source in OTP bank 3, word 0 (customer
control data).
Parameter - unsigned src
Return- unsigned: see the general error codes.
3; word 0 Customer
control data
otp_ProgJTAGDis 0x08 Set JTAG_DISABLE bit in OTP bank 3, word 0 (customer
control data). Use only when the device is AES capable.
Setting the JTAG_DISABLE bit disables the JTAG
permanently.
Parameter - void
Return- unsigned: see the general error codes.
3; word 0 Customer
control data
otp_ProgUSBID 0x0C Programs USB_ID.
Parameter - unsigned prod_id, unsigned vend_id
Return- unsigned: see the general error codes.
3; word 1 Customer
control data
- 0x10 Reserved. - -
otp_ProgGP0 0x14 Programs the general purpose OTP memory GP0. Use only
if the device is not AES capable. The data parameter consists
of four 32-bit words, one for each word in the memory bank.
The mask parameter contains a mask for each of the words
written. Mask bits that are set to 1 allow a write to the
corresponding OTP bit.
Parameter - unsigned *data, unsigned *mask
Return- unsigned: see the general error codes.
1 (entire
bank) General
purpose
memory 0;
words 0 to 3
otp_ProgGP1 0x18 Programs the general purpose OTP memory GP1. Use only
if the device is not AES capable. The data parameter consists
of four 32-bit words, one for each word in the memory bank.
The mask parameter contains a mask for each of the words
written. Mask bits that are set to 1 allow a write to the
corresponding OTP bit.
Parameter - unsigned *data, unsigned *mask
Return- unsigned: see the general error codes.
2 (entire
bank) General
purpose
memory 1;
words 0 to 3
otp_ProgGP2 0x1C Programs the general purpose OTP memory GP2 (however,
writes to word 0, which contains customer control data are
ignored). Use for customer-specific data. The data parameter
consists of four 32-bit words, one for each word in the
memory bank. The mask parameter contains a mask for each
of the words written. Mask bits that are set to 1 allow a write
to the corresponding OTP bit.
Parameter - unsigned *data, unsigned *mask
Return- unsigned: see the general error codes.
3 (word 1,
word 2, word
3); writes to
word 0 are
ignored General
purpose
memory 2;
words 1 to 3;