Analog Devices EZ-KIT Lite ADSP-BF707, System Manual

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ADSP-BF707 EZ-KIT Lite Evaluation System Manual 2-9
ADSP-BF707 EZ-KIT Lite Hardware Reference
Each of the examples in the ADSP-BF707 Board Support Package include
source files that program the soft switches, even if the default settings are
being used. The
README
for each example identifies only the signals that
are being changed from their default values. The code that programs the
soft switches is located in the
SoftConfig_BF707.c
file, with a version
number suffix, in each example.
The following tables ( Table 2-4 and Table 2-5 ) outline the default values
for each of the two Microchip MCP23017 devices.
Table 2-2. IODIR for Hardware Address 0x41
IODIR Register IODIR Register Address Value to be Written to Program Signals
as Outputs
IODIRA 0x00 0x40
IODIRB 0x01 0x03
Table 2-3. IODIR for Hardware Address 0x42
IODIR Register IODIR Register Address Value to be Written to Program Signals
as Outputs
IODIRA 0x00 0x80
IODIRB 0x01 0x83
Table 2-4. I
2
C Hardware Address 0x41
GPIO MCP23017 Register Address Default Value
GPIOA 0x12 0xF8
GPIOB 0x13 0xFF