BCM20730 Data Sheet
Pin Descriptions
a
Table 8: GPIO Pin Descriptions (Cont.)
Pin Number
32-Pin 40-pin 64-pin
Default
After
Power
Domain Alternate Function Description
QFN
QFN
BGA
Pin Name Direction POR
–
–
B8
P19
P20
P21
Input
Input
Input
Floating VDDO
• GPIO: P19
• Keyboard scan output (column):
KSO11
• A/D converter input
• GPIO: P20
–
–
–
–
A8
C6
Floating VDDO
Floating VDDO
• Keyboard scan output (column):
KSO12
• A/D converter input
• GPIO: P21
• Keyboard scan output (column):
KSO13
• A/D converter input
• Triac control 3
–
–
G4
P22
Input
Floating VDDO
• GPIO: P22
• Keyboard scan output (column):
KSO14
• A/D converter input
• Triac control 4
–
–
E3
A7
P23
P24
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P23
• Keyboard scan output (column):
KSO15
• A/D converter input
• GPIO: P24
27
33
• Keyboard scan output (column):
KSO16
• SPI_2: SPI_CLK (master and slave)
• SPI_1: MISO (master only)
• Peripheral UART: puart_tx
26
32
B7
P25
Input
Floating VDDO
• GPIO: P25
• Keyboard scan output (column):
KSO17
• SPI_2: MISO (master and slave)
• Peripheral UART: puart_rx
BROADCOM
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September 9, 2013 • 20730-DS108-R
Page 35
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