Datasheet
UM10398 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
User manual Rev. 12.3 — 10 June 2014 448 of 547
NXP Semiconductors
UM10398
Chapter 26: LPC111x/LPC11Cxx Flash programming firmware
26.10.1.2 Signature generation result registers
The signature generation result registers return the flash signature produced by the
embedded signature generator. The 128-bit signature is reflected by the four registers
FMSW0, FMSW1, FMSW2 and FMSW3.
The generated flash signature can be used to verify the flash memory contents. The
generated signature can be compared with an expected signature and thus makes saves
time and code space. The method for generating the signature is described in
Section 26.10.2
.
Table 415
show bit assignment of the FMSW0 and FMSW1, FMSW2, FMSW3 registers
respectively.
Table 410. Flash Module Signature Start register (FMSSTART - 0x4003 C020) bit description
Bit Symbol Description Reset
value
16:0 START Signature generation start address (corresponds to AHB byte
address bits[20:4]).
0
31:17 - Reserved, user software should not write ones to reserved bits.
The value read from a reserved bit is not defined.
NA
Table 411. Flash Module Signature Stop register (FMSSTOP - 0x4003 C024) bit description
Bit Symbol Value Description Reset
value
16:0 STOP BIST stop address divided by 16 (corresponds to AHB
byte address [20:4]).
0
17 SIG_START Start control bit for signature generation. 0
0 Signature generation is stopped
1 Initiate signature generation
31:18 - Reserved, user software should not write ones to
reserved bits. The value read from a reserved bit is not
defined.
NA
Table 412. FMSW0 register bit description (FMSW0, address: 0x4003 C02C)
Bit Symbol Description Reset value
31:0 SW0[31:0] Word 0 of 128-bit signature (bits 31 to 0). -
Table 413. FMSW1 register bit description (FMSW1, address: 0x4003 C030)
Bit Symbol Description Reset value
31:0 SW1[63:32] Word 1 of 128-bit signature (bits 63 to 32). -
Table 414. FMSW2 register bit description (FMSW2, address: 0x4003 C034)
Bit Symbol Description Reset value
31:0 SW2[95:64] Word 2 of 128-bit signature (bits 95 to 64). -
Table 415. FMSW3 register bit description (FMSW3, address: 0x4003 40C8)
Bit Symbol Description Reset value
31:0 SW3[127:96] Word 3 of 128-bit signature (bits 127 to 96). -