User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The Base Band Chip of the UL865 provides one Digital Audio Interface.
Please refer to the UL865 DVI Application Note for additional details on this function.
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 firmware and acts depending
on the function implemented.
The following table shows the available GPIO on the UL865 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_TX
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.