User Manual

11
Pin# Pin Name Type Description
I/O Voltage Range
18 GPIO1 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
19 GPIO0 I/O
Programmable input/output
line
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
20 GND Power System ground
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21 GND Power System ground
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22 /RESET I Active low system reset
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
23 USB_5V_IN I
Input to USB regulator. Connect to external
USB
bus supply, e.g. USB_VBUS.
Input voltage: 4.20V – 5.75V
24
SPI_CS#/PCM1_SY
NC
O
High switches SPI/PCM lines
to SPI, low switches SPI/
PCM lines to PCM/PIO use.
Voh: 0.75 X VDD
Vol: 0 – 0.4V
25
SPI_MISO/PCM1_O
UT
O
SPI data output/PCM1 port synchronous
data output
Voh: 0.75 X VDD
Vol: 0 – 0.4V
26 SPI_MOSI/PCM1_IN I
SPI data intput/PCM1 port synchronous
data input
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
27 GPIO_5 I/O I/O port power input
Voh: 0.75 X VDD
Vol: 0 – 0.4V
Vih: 0.7 X VDD – VDD + 0.4V
Vil: -0.4V -- 0.4 VDD
28 GND Power System ground
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29 GND Power System ground
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30 GND Power System ground
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