Table 2-8. Output Signals of Microchip GPIO Expander
(U46 Port B)
Bit Signal Name
0
PUSHBUTTON1_EN
1
PUSHBUTTON2_EN
2
SD_CD_EN
3
SD_WP_EN
4
SPIFLASH_CS_EN
5
SPI0D2_EN
6
SPI0D3_EN
ADSP-BF609 EZ-KIT Lite Evaluation System Manual
ADSP-BF609 EZ-KIT Lite Hardware Reference
Description
PB10 is used as GPIO
input for push button 1,
enabled by default
PE01 is used as GPIO
input for push button 2,
enabled by default
SD memory card detect
connected to GPIO
PG10, enabled by
default
SD memory write pro-
tect connected to GPIO
PG10, enabled by
default
SPI flash chip select
SPI0SEL1 connection to
U38 SPI flash, connected
by default
SPI flash data 2 connec-
tion to U38 SPI flash,
connected by default.
This is needed for quad
access mode.
SPI flash data 3 connec-
tion to U38 SPI flash,
connected by default.
This is needed for quad
access mode.
FET Processor Signal
(if applicable)
U23
PB10/SMC0_
A24/SPT0_
BD1/TM0_ACLK0
U22
PE01/SPI1_
D2/PPI0_
D19/SPT1_BD0
U15
PG10/UART1_
RTS/SPT2_BCLK
U14
PG13/UART1_
CTS/TM0_CLK
U13
PD11/SPI0_
SEL1/SPI0_SS
U12
PD00/SPI0_
D2/PPI1_
D16/SPI0_SEL3
U16
PD01/SPI0_
D3/PPI1_
D17/SPI0_SEL2
Component
Default
Connected
Low
SW6
Low
SW7
Low
J5
Low
J5
Low
U38
Low
U38
Low
U38
2-15
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