User's Manual

UL865-N3G Hardware User Guide
1VV0301177 Rev 2– 2015-04-20
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Reserved. Page 48 of 70
Mod. 0805 2011-07 Rev.2
12. Audio Section Overview
The Base Band Chip of the UL865-N3G V2 provides one Digital Audio Interface.
Please refer to the UL865-N3G V2 DVI Application Note for additional details on this
function.
13. General Purpose I/O
The general purpose I/O pads can be configured to act in three different ways:
 input
 output
 alternate function (internally controlled)
Input pads can be read; they report the digital value (high or low) present on the pad at the
read time.
Output pads can only be written or queried and set the value of the pad output.
An alternate function pad is internally controlled by the UL865-N3G V2 firmware and acts
depending on the function implemented.
The following table shows the available GPIO on the UL865-N3G V2 and their state.
Pin Signal I/O Function Type
Input /
output
current
Default
State
ON_OFF
state
State
during
Reset
Note
42 GPIO_01 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
DVI_WA0
41 GPIO_02 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
JDR and DVI_RX
40 GPIO_03 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
DVI_TX
39 GPIO_04 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
TX Disable and
DVI_CLK
29 GPIO_05 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
28 GPIO_06 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
/SPI_SRDY
27 GPIO_07 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
/SPI_MRDY
26 GPIO_08 I/O Configurable GPIO CMOS 1.8V 1uA/1mA INPUT 0 0
Alternate function
STAT_LED
NOTE:
The internal GPIO’s pull up/pull down could be set to the preferred status for the application
using the AT#GPIO command.
Please refer for the AT Commands User Guide for the detailed command Syntax.