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3.1.2.1 Signal Definition of the AFE539A4EVM
The AFE539A4EVM provides access to all AFE pins through connection J1 and J2, as listed in
Table 3-6. AFE539A4EVM J2 Pin Definitions
Pin#
Signal
Description
1
AFE_VDD
VDD power supply for AFE
2
AFE_SCLK
SPI SCLK
3
AFE_SDO
SPI SDO output for AFE
4
AFE_SCL
I
2
C SCL input for AFE
5
EXT_REF
External reference input for AFE
6
GND
Ground
7
GND
Ground
8
GND
Ground
9
NC
Not connected
10
NC
Not connected
11
AFE_FB3
Feedback pin for AFE OUT3
12
AFE_OUT3
Output pin for AFE OUT3
13
GND
Ground
14
GND
Ground
15
AFE_OUT2
Output pin for AFE OUT2
16
AFE_FB2
Feedback pin for AFE OUT2
Table 3-7. AFE539A4EVM J1 Pin Definitions
Pin#
Signal
Description
1
GND
Ground
2
AFE_SDI
SPI SDI signal input for AFE
3
AFE_SYNC
SPI SYNC signal input for AFE
4
AFE_SDA
I
2
C SDA input for AFE
5
GND
Ground
6
GND
Ground
7
NC
Not connected
8
NC
Not connected
9
AFE_GPIO
GPIO input for AFE
10
AFE_MODE
MODE input for AFE
11
AFE_VREF
MODE/VREF input for AFE
12
AFE_CAP
LDO bypass capacitor
13
AFE_FB0
Feedback pin for AFE VOUT0
14
AFE_OUT0
Output pin for AFE VOUT0
15
AFE_OUT1
Output pin for AFE VOUT1
16
AFE_FB1
Feedback pin for AFE VOUT1
Detailed Description
SLAU859 – JULY 2021
AFE539A4EVM
13
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