UM10503
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User manual
Rev. 1.3 — 6 July 2012
1196 of 1269
NXP Semiconductors
UM10503
Chapter 46: LPC43xx flash programming/ISP and IAP
46.11.1.3 Flash Module Status register
The read-only FMSTAT register provides a means of determining when signature
generation has completed. Completion of signature generation can be checked by polling
the SIG_DONE bit in FMSTAT. SIG_DONE should be cleared via the FMSTATCLR
register before starting a signature generation operation, otherwise the status might
indicate completion of a previous operation.
46.11.1.4 Flash Module Status Clear register
The FMSTATCLR register is used to clear the signature generation completion flag.
Table 1060.FMSW1 register bit description (FMSW1, address: 0x4000 C030 (flash A) and 0x4000 D030 (flash B))
Bit
Symbol
Description
Reset
Value
31:0
SW1[63:32]
Word 1 of 128-bit signature (bits 63 to 32).
-
Table 1061.FMSW2 register bit description (FMSW2, address 0x4000 C034 (flash A) and 0x4000 D034 (flash B))
Bit
Symbol
Description
Reset
Value
31:0
SW2[95:64]
Word 2 of 128-bit signature (bits 95 to 64).
-
Table 1062.FMSW3 register bit description (FMSW3, address 0x4000 C038 (flash A) and 0x4000 D038 (flash B))
Bit
Symbol
Description
Reset
Value
31:0
SW3[127:96]
Word 3 of 128-bit signature (bits 127 to 96).
-
Table 1063.Flash module Status register (FMSTAT, address 0x4000 CFE0 (flash A) and 0x4000 DFE0 (flash B)) bit
description
Bit
Symbol
Description
Reset
Value
31:2
-
Reserved, user software should not write ones to reserved bits. The value read
from a reserved bit is not defined.
NA
2
SIG_DONE
When 1, a previously started signature generation has completed. See
FMSTATCLR register description for clearing this flag.
0
1:0
-
Reserved, user software should not write ones to reserved bits. The value read
from a reserved bit is not defined.
NA
Table 1064.Flash Module Status Clear register (FMSTATCLR, address 0x4000 CFE8 (flash A) and 0x4000 DFE8 (flash
B)) bit description
Bit
Symbol
Description
Reset
Value
31:2
-
Reserved, user software should not write ones to reserved bits. The value read
from a reserved bit is not defined.
NA
2
SIG_DONE_CLR
Writing a 1 to this bits clears the signature generation completion flag
(SIG_DONE) in the FMSTAT register.
0
1:0
-
Reserved, user software should not write ones to reserved bits. The value read
from a reserved bit is not defined.
NA