1
REV. 1.0.0
XRA1403/1405 EVALUATION BOARD USER’S MANUAL
INTRODUCTION
This user’s manual is for the XRA1403/1405 16-bit evaluation board. Table 1 shows the different devices and
packages that the evaluation board supports. This user’s manual will describe the hardware setup required to
operate the different packages.
1.0 QUICK START
To verify communication with the GPIO expander, the following steps are recommended:
1.1
Connect ex5V power supply to J8 pin 1
1.2
Connect J12 pin 13 and 14 to ground of external power supply
1.3
Connect to MCU SPI interface for:
SPI clock (SCK_SCL signal at J5 pin11)
SO (SO_SPI signal at J5 pin17)
SI (SI_SPI signal at J5 pin21)
CS# (CS#_SPI signal at J5 pin19)
1.4
From the MCU, write the following registers:
GCR1 = 0x00
GCR2 = 0x00
If the LEDs turn on, the communication with the GPIO expander is successful.
To disable connection to LEDs, remove jumpers on J28, J29, J30 and J31. Connect to external inputs or
outputs at J3 and J4.
2.0 HARDWARE SETUP
2.1
Packages description
The evaluation board supports all 4 packages of the XRA1403 and XRA1405. The ordering part number,
package and location on the board is shown below in Table 1. Table 2 lists the evaluation board ordering part
numbers.
T
ABLE
1: P
ACKAGE
L
IST
O
RDERING
P
ART
N
UMBER
P
ACKAGE
L
OCATION
XRA1403IL24-F
24-pin QFN
U4
XRA1403IG24-F
24-pin TSSOP
U5
XRA1405IL24-F
24-pin QFN
U4
XRA1405IG24-F
24-pin TSSOP
U5
T
ABLE
2: E
VALUATION
B
OARD
O
RDERING
P
ART
N
UMBERS
P
ART
N
UMBER
XRA1403IL24-0B-EB
XRA1403IG24-0B-EB
XRA1405IL24-0B-EB
XRA1405IG24-0B-EB
