SX8652ICSTRT Semtech, SX8652ICSTRT Datasheet - Page 21

• Manufacturer Part Number: SX8652ICSTRT
• Description: 4/5-wire Resistive Touch Screen Controller (SPI)
• Manufacturer: Semtech

9.5. Invalid Qualified Data
The SX8652 returns 0xFFFF data in case of invalid qualified data.
This occurs:
Revision V1.7/October 2010
©2010 Semtech Corp.
ADVANCED COMMUNICATIONS & SENSING
NCS
SCLK
DIN
DOUT
NCS
SCLK
DIN
DOUT
NCS
SCLK
DIN
DOUT
NCS
SCLK
DIN
DOUT
Writing Register
Reading Register
Reading Channel Data
Other command
When the SX8652 has read all the channel data in the FIFO
When a conversion is done without a pen being detected.
0 0 1
0 0 0
0 1 0
CMD
RA[4:0]
RA[4:0]
Single Read
Single Read
Single Write
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
11 10 9 8 7 6 5 4 3 2 1 0
Figure 17. Data channel format
15kV ESD Low Power 4-Wire / 5-Wire Resistive
Page 21
Touchscreen Controller with SPI Interface
Multiple Write
Multiple Read
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
Multiple Read
11 10 9 8 7 6 5 4 3 2 1 0
Unknown bit
Single access
Multiple access
www.semtech.com
DATASHEET
SX8652