Datasheet

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