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
–
–
E7
P31
P32
Input
Input
Floating VDDO
• GPIO: P31
• A/D converter input
• EEPROM WP pin in default FW
• Peripheral UART: puart_tx
25
24
31
30
D6
D8
Floating VDDO
Floating VDDO
• GPIO: P32
• A/D converter input
• Quadrature: QDX0
• SPI_2: SPI_CS (slave only)
• SPI_1: MISO (master only)
• Auxiliary clock output: ACLK0
• Peripheral UART: puart_tx
P33
P34
Input
Input
• GPIO: P33
• A/D converter input
• Quadrature: QDX1
• SPI_2: MOSI (slave only)
• Auxiliary clock output: ACLK1
• Peripheral UART: puart_rx
Alternative Function:
• P8 in 32-QFN only
–
–
B6
Floating VDDO
• GPIO: P34
• A/D converter input
• Quadrature: QDY0
• Peripheral UART: puart_rx
• External T/R switch control: tx_pd
–
–
–
–
D5
C4
P35
P36
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P35
• A/D converter input
• Quadrature: QDY1
• Peripheral UART: puart_cts
• GPIO: P36
• A/D converter input
• Quadrature: QDZ0
• SPI_2: SPI_CLK (master and slave)
• Auxiliary Clock Output: ACLK0
• Battery detect pin in default FW
• External T/R switch control: ~tx_pd
BROADCOM
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September 9, 2013 • 20730-DS108-R
Page 37
BROADCOM CONFIDENTIAL
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