A.1
Arduino Expansion Shield connectors
Connectors on the Musca
‑
S1 development board provide one Shield expansion interface. The interface
provides 16 digital I/O and six analog I/O. The digital and analog I/O operating voltage is 1V8 or 3V3.
Arduino Shield interface
The following figure shows the Arduino Shield interface connectors.
J14
J13
J11
J15
1
1
1
1
GPIO[0]
GPIO[1]
GPIO[2]
GPIO[3]
GPIO[4]
GPIO[5]
GPIO[6]
GPIO[7]
GPIO[8]
GPIO[9]
GPIO[10]
GPIO[11]
GPIO[12]
GPIO[13]
GND
N/C
GPIO[14]
GPIO[15]
AN5
AN4
AN3
AN2
AN1
AN0
VIN
GND
GND
5V
3V3
N/C
IOREF
N/C
Digital I/O
connectors
Analog I/O
connector
Power and voltage
reference connector
Musca-S1 board
Figure A-1 Arduino Shield interface connectors
Digital I/O connectors, J11, J15
Connector J11 provides Shield digital I/O GPIO[15:8], and connector J15 provides Shield digital I/O
GPIO[7:0]. Connector J11 also provides the analog I/O reference voltage.
The IOMUX registers select one of the Shield interface GPIO pin functions sets, ALTF1, ALTF2, or
ALTF3. The IOMUX registers are part of the
Serial Configuration Control
(SCC) registers. See
2.2.2 Test chip multiplexed I/O
.
The following table shows the pin mappings for connector J11.
A Signal descriptions
A.1 Arduino Expansion Shield connectors
101835_0000_01_en
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