Cmsemicon CMS32L051 - Page 47

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CMS32L051 User Manual |Chapter 2 Pin Function
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Table 2-11 Example of register setting when using P40 to P41 pin functions
Pin
nam
e
Features used
PMCx
x
PMx
x
Px
x
POMx
x
PxxCFG
(Output
Multiplexing
Configuratio
n Register)
xxPCFG (Input Multiplexing
Configuration Register)
SPIPCF
G
remark
The feature name
Input/outp
ut
P40
P40
input
-
1
×
×
×
×
×
output
-
0
0/1
0

h0
×
×
N-channel
open-
drain
output
-
0
0/1
1
×
Mappable
concurrent inputs
input
-
1
×
×
×
Configure xxPCFG
×
Please refer
to 2.3.9
Mappable
concurrent output
output
-
0
0/1
0
Configure
P40CFG
×
×
Please refer
to 2.3.10
Mappable
bidirectional
communication
(SDA00/SDAA0/SC
LA0)
bidirection
al
-
0
0/1
1

h0
Configure
SDI00PCFG/SDAA0PCFG/SCLA0
PCFG
×
Please refer
to 2.3.9
P41
P41
input
-
1
×
×
×
×
×
output
-
0
0/1
0

h0
×
×
N-channel
open-
drain
output
-
0
0/1
1
×
Mappable
concurrent inputs
input
-
1
×
×
×
Configure xxPCFG
×
Please refer
to 2.3.9
Mappable
concurrent output
output
-
0
0/1
0
Configure
P41CFG
×
×
Please refer
to 2.3.10
Mappable
bidirectional
communication
(SDA00/SDAA0/SC
LA0)
bidirection
al
-
0
0/1
1

h0
Configure
SDI00PCFG/SDAA0PCFG/SCLA0
PCFG
×
Please refer
to 2.3.9