LPI2Cx_MCFGR0 field descriptions (continued)
Field
Description
Configures the polarity of the host request input pin.
0
Active low.
1
Active high.
0
HREN
Host Request Enable
When enabled, the LPI2C master will only initiate a START condition if the host request input is asserted
and the bus is idle. A repeated START is not affected by the host request.
0
Host request input is disabled.
1
Host request input is enabled.
45.3.8 Master Configuration Register 1 (LPI2Cx_MCFGR1)
The MCFGR1 should only be written when the I2C Master 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
LPI2Cx_MCFGR1 field descriptions
Field
Description
31–27
Reserved
This field is reserved.
This read-only field is reserved and always has the value 0.
26–24
PINCFG
Pin Configuration
Configures the pin mode.
000
LPI2C configured for 2-pin open drain mode.
001
LPI2C configured for 2-pin output only mode (ultra-fast mode).
010
LPI2C configured for 2-pin push-pull mode.
011
LPI2C configured for 4-pin push-pull mode.
100
LPI2C configured for 2-pin open drain mode with separate LPI2C slave.
Table continues on the next page...
Chapter 45 Low Power Inter-Integrated Circuit (LPI2C)
Kinetis KE1xZ256 Sub-Family Reference Manual, Rev. 3, 07/2018
NXP Semiconductors
1139
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