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LPSPIx_CFGR0 field descriptions (continued)
Field
Description
Configures the polarity of the host request pin.
0
Active low.
1
Active high.
0
HREN
Host Request Enable
When enabled in master mode, the LPSPI will only initiate a SPI bus transfer if the host request input is
asserted.
0
Host request is disabled.
1
Host request is enabled.
29.2.8 Configuration Register 1 (LPSPIx_CFGR1)
The CFGR1 should only be written when the LPSPI is disabled.
Address: Base a 24h offset
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
LPSPIx_CFGR1 field descriptions
Field
Description
31–28
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
27
PCSCFG
Peripheral Chip Select Configuration
PCSCFG must be set if performing 4-bit transfers.
0
PCS[3:2] are enabled.
1
PCS[3:2] are disabled.
26
OUTCFG
Output Config
Configures if the output data is tristated between accesses (LPSPI_PCS is negated).
Table continues on the next page...
Chapter 29 Low Power Serial Peripheral Interface (LPSPI)
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors
775
Содержание K32 L2A Series
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