LMK04821
,
LMK04826
,
LMK04828
SNAS605AR –MARCH 2013–REVISED DECEMBER 2015
www.ti.com
9.7.9.10 SPI_LOCK
Prevents SPI registers from being written to, except for 0x1FFD, 0x1FFE, 0x1FFF. These registers must be
written to sequentially and in order: 0x1FFD, 0x1FFE, 0x1FFF.
These registers cannot be read back.
MSB — LSB
0x1FFD [7:0] 0x1FFE [7:0] 0x1FFF [7:0]
Table 83. Registers 0x1FFD, 0x1FFE, and 0x1FFF
POR
BIT REGISTERS NAME DESCRIPTION
DEFAULT
0: Registers unlocked.
7:0 0x1FFD SPI_LOCK[23:16] 0
1 to 255: Registers locked
0: Registers unlocked.
7:0 0x1FFE SPI_LOCK[15:8] 0
1 to 255: Registers locked
0 to 82: Registers locked
7:0 0x1FFF SPI_LOCK[7:0] 83 83: Registers unlocked
84 to 256: Registers locked
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Product Folder Links: LMK04821 LMK04826 LMK04828
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