ZIO, Motherboard User Manual
Rev. 2.0
Zilogic Systems
Page 3
Chapter 2. Connecting to ZIO
In this chapter we will describe the connector used for the ZIO ports and the pins found on each
of the ports. The ZIO has 5 FRC connectors.
1. DIO
2. AIO
3. PWM
4. UART-I²C
5. SPI
1.
SPI
Pinmap
The
SPI
header is terminated with serial peripheral interface (SPI) bus, 4 general purpose IO
and power supply. Add-on boards with SPI interface and general purpose IOs like MMC/SD
card,EEPROM etc., can be connected through this header.
Table 2.1.
SPI
Header
Pin #
Header Signal
Signal Type
1
VCC
+5V
2
SCK
TTL Out
3
MISO
TTL In
1
4
MOSI
TTL Out
5
SS
TTL Out
6
DIO0
OC
2
7
DIO1
OC
2
8
DIO2
OC
2
9
DIO3
OC
2
10
GND
Ground
1
5V tolerant Input
2
Open collector, with 5V pull-up
VCC
(Pin 1)
This is the +5V power supply for the external devices. The supply has a
total current limit of 200mA when powered through USB.
SCK
(Pin 2)
This is Serial Clock signal.
MISO
(Pin 3)
This is the Master Input, Slave Output signal.
MOSI
(Pin 4)
This is the Master Output, Slave Input signal.
SS
(Pin 5)
This is the SPI chip select signal.
DIO
(Pin 6-9)
These are digital input/output signals. These lines can be used to
interface any extra signals required for a SPI devices like SD Card, etc., or
