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
–
27
F5
P6
Input
Floating VDDO
• GPIO: P6
PWM2
• Keyboard scan input (row): KSI6
• Quadrature: QDZ0
• Peripheral UART: puart_rts
• SPI_2: SPI_CS (slave only)
• 60Hz_main
• Triac control 1
–
28
29
C5
F4
P7
P8
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P7
• Keyboard scan input (row): KSI7
• Quadrature: QDZ1
• Peripheral UART: puart_cts
• SPI_2: SPI_CLK (master and slave)
24
• GPIO: P8
• Keyboard scan output (column):
KSO0
• A/D converter input
• External T/R switch control: ~tx_pd
Alternative Function:
• P33 in 32-QFN only
–
3
A1
P9
Input
Floating VDDO
• GPIO: P9
• Keyboard scan output (column):
KSO1
• A/D converter input
• External T/R switch control: tx_pd
–
1
2
D2
C2
P10
PWM3
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P10
• Keyboard scan output (column):
KSO2
• A/D converter input
• GPIO: P11
40
P11
• Keyboard scan output (column):
KSO3
• A/D converter input
• XTALI32K (32-QFN and 40-QFN only)
Alternative Function:
• P27 in 32-QFN only
BROADCOM
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September 9, 2013 • 20730-DS108-R
Page 33
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