EVB-VF522R3 Platform User’s Guide, Rev. 0, 11/2014
28
Freescale Semiconductor, Inc.
User I/O and control
NOTE
The daughtercard Reset input (acting as Chip Select when applicable) has a
pull-down resistor but, as an option, may be connected to output 7 of the
Peripheral Reset-Control Multiplexer (see
”).
CAUTION
Ensure that the EVB is powered OFF prior to fitting or removal of the
daughtercard.
14.6.2
I
2
C header with 5V power (P19)
A 4-pin 0.1-inch pitch header (P19) enables connection of a custom-made 5V-powered daughtercard
supporting various applications and matching the connector type and pinout (see
CAUTION
Ensure that the EVB is powered OFF prior to fitting or removal of the
daughtercard.
14.7
CD header (P18)
There is a 0.1-inch pitch generic CD header fitted on the EVB as described in
Table 11. I
2
C header
Signal
Function
Pin No
Pin No
Function
Signal
5V0
VCC
1
2
I
2
C SDA
I
2
C3_SDA
GND
GND
3
4
I
2
C SCL
I
2
C3_SCL
Table 12. Generic CD header
Signal
Pin No
Pin No
Signal
3.3V
1
2
5.0V
SAI2_RX_BCLK
3
4
I
2
C3_SCL
SAI2_RX_DATA
5
6
I
2
C3_SDA
SAI2_RX_SYNC
7
8
---
RESET
9
10
MCLK (from DSP)
GND
11
12
GND
