Host Comms Mode - Pl6; Evk Communication Mode Select; Bridge Board Communication Mode Select - TouchNetix aXiom AX80A EVK Quick Start Manual

5.2.2 Host Comms mode - PL6

Pin Name
1 SLVI2CADDRSEL/MOSI
2 VDDI
3 SLVI2CADDRSEL/MOSI
4 GND
5 nSLVI2C
6 GND
7 nSLVI2C
8 SLVI2CADDRSEL/MOSI
9 LIN EN
10 SLVnIRQ
The AX80A EVK board will use the SPI communication interface to the host by default, with nothing set
on the header. By fitting jumpers in accordance with the silkscreen diagram in Figure 5.2.2-1, you can
change the communication mode accordingly.
2
I C 0x66 address is selected in the middle image, I
The Bridge always needs to be set to be the same communication protocol as the AX80A EVK. The
board comes with no link fitted on the PL3 'COMM SEL' header which is correct for SPI, should you want
2
I C then you would need to fit a 2 pin header and jumper.
Figure 5.2.2-2: Bridge Board Communication Mode Select
Doc: TNxAN00072
aXiom AX80A EVK Quick Start Guide
Description
SPI: MOSI
I2C: Address select
VDDI
SPI: MOSI
I2C: Address select
Ground
SPI: MOSI
I2C: I 2 C Comms select
Ground
SPI: MOSI
I2C: I 2 C Comms select
SPI: MOSI
I2C: Address select
LIN EN
Active Low IRQ signal from AX80A Device to Host
Table 5.2.2-1: Host Comms Mode Select Header
Figure 5.2.2-1: EVK Communication Mode Select
Pg:
2
C 0x67 address is selected in the right image.
15 of 23 Rev: A2