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
32
39
B2
P12
Input
Floating VDDO
• GPIO: P12
• Keyboard scan output (column):
KSO4
• A/D converter input
• XTALO32K (32-QFN and 40-QFN
only)
Alternative Function:
• P26 in 32-QFN only
29
30
31
35
36
37
F3
D3
A2
P13
PWM3
Input
Input
Input
Floating VDDO
Floating VDDO
Floating VDDO
• GPIO: P13
• Keyboard scan output (column):
KSO5
• A/D converter input
• Triac control 3
Alternative Function:
• P28 in 32-QFN only
P14
PWM2
• GPIO: P14
• Keyboard scan output (column):
KSO6
• A/D converter input
• Triac control 4
Alternative Function:
• P38 in 32-QFN only
P15
• GPIO: P15
• Keyboard scan output (column):
KSO7
• A/D converter input
• IR_RX
• 60Hz_main
–
–
–
–
C8
H4
P16
P17
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P16
• Keyboard scan output (column):
KSO8
• GPIO: P17
• Keyboard scan output (column):
KSO9
• A/D converter input
• GPIO: P18
–
–
C7
P18
Input
Floating VDDO
• Keyboard scan output (column):
KSO10
• A/D converter input
BROADCOM
®
September 9, 2013 • 20730-DS108-R
Page 34
BROADCOM CONFIDENTIAL
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