D i d o H a r d w a r e M a n u a l
v . 1 . 0 . 5
Connector Pin
Pin
name
Function
Notes
J2.119
7.15
I2C buses
Two I2C channels are available on DIDO to provide an interface
to other devices compliant with Philips Semiconductors Inter-IC
bus (I2C-bus™) specification version 2.1. External components
attached to this 2-wire serial bus can transmit/receive 8-bit
data to/from the device through the I2C module. The I2C ports
support standard and fast modes from 10 - 400 Kbps (no
fail-safe I/O buffers).
A third I2C channel (I2C0) is used for the internal connection
between CPU and PMIC (please refer to Section 5.2).
7.15.1 I2C2
The following table describes the interface signals:
Connector Pin
Pin
name
Function
Notes
I2C[2]_SCL
J1.23
J2.122
J2.128
I2C2 Clock
For proper device
operation in I2C
mode, this pin
must be pulled
up via
external resistor.
I2C[2]_SDA
J2.39
J2.66
J2.120
J2.121
I2C2 Data I/O
For proper device
operation in I2C
mode, this pin
must be pulled
up via
external resistor.
7.15.2 I2C3
The following table describes the interface signals:
Connector Pin
Pin
name
Function
Notes
I2C[3]_SCL
J2.106
J1.27
I2C3 Clock
J2.106 line is
internally
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