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Software-Controlled Switches (SoftConfig)
Table 2-1. Default ADSP-BF609 Processor Interface Availability
Interface
EMAC0
Rotary encoder
Link port 0
CAN
UART
SMC (parallel flash)
SPI Flash
Temperature sensor
Push buttons
LEDs
Programming SoftConfig Switches
On the ADSP-BF609 EZ-KIT Lite, three Microchip MCP23017 devices
exist. Each of these devices have the following programming
characteristics:
• Each switch has two programmable GPIO registers.
GPIO Register
GPIOA
GPIOB
• Each GPIO register controls eight signals (software switches).
2-8
Availability by Default
Fully connected, need SoftConfig to enable RMII clock
Enabled
Enabled with selection of the boot mode 6 setting, or by configuring
SoftConfig
Enabled, the
connection to the processor is disabled
CAN0_ERR
,
and
are enabled by default, use SoftConfig to enable other fea-
TX
RX
RTS
tures listed in the UART0 section and
Enabled with selection of boot mode 1, can be changed with SoftConfig
Fully connected for quad mode by default
Enabled, requires SoftConfig to connect interrupts
Enabled (except for wake push button)
Enabled
Register Address
0x12
0x13
ADSP-BF609 EZ-KIT Lite Evaluation System Manual
Table 2-5
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