Total Phase
Aardvark I
2
C/SPI Activity Board
2. Connectors
There are multiple connectors on the Aardvark I
2
C/SPI Activity Board.
Figure 2: Aardvark I
2
C/SPI Activity Board Connectors
Port Expander (J1)
The pins of J1 are connected directly to the port expander IC. Signals
can be connected to an external source through these pins.
The LEDs (D0-D7) are also tied to the pins of this connector (P0-P7).
I
2
C Port Expander configurable address (J2)
Additional jumpers may be used to set the slave address of the I
2
C Port
Expander. These jumpers are not included with the board. For more in-
fomration about how to set the address, please see section 2.1 Config-
urable I2C Address.
I
2
C EEPOM configurable address (J3)
Additional jumpers may be used to set the slave address of the I
2
C EEP-
ROM. These jumpers are not included with the board. For more infomra-
tion about how to set the address, please see section 2.1 Configurable
I2C Address.
SS Connect (J4)
When this jumper is bridged, both Aardvark adapters are connected to
the SPI EEPROM slave select (SS) line. The slave select (SS) lines of
the two Aardvark adapters are always connected to each other.
A jumper is included with the board to connect the Aardvark adapters to
the SPI EEPROM.
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