3M Touch Screen Controller SX112 Reference Manual page 22

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To terminate Format Raw, issue a Reset command. The controller may return several
bytes of data between the time you issue a Reset command and the controller receives it.
You can either scan the data stream for the Reset acknowledgment, or you can ignore the
response to the first Reset command and then issue a second Reset after approximately 10
seconds has passed.
Use the Format Raw command for diagnostics. Use Format Tablet for standard sensor
operation.
Response: <SOH>0<CR>
After the controller is in Format Raw mode, the controller returns a continuous response
in the following format:
<41-byte-packet><41-byte-packet>...<41-byte-packet>...
Table 8 General Packet Formats
Byte
1
2-6
7-11
12-16
17-21
22-26
27-31
32-36
37-41
Table 9 I/Q Corner Components
Byte
N
N+1
N+2
N+3
N+4
Positive response.
Bits 0 – 7
b0 – b6: Reserved
b7: Synchronization bit (Always 1)
I component of upper left (UL) corner
Q component of upper left (UL) corner
I component of upper right (UR) corner
Q component of upper right (UR) corner
I component of lower left (LL) corner
Q component of lower left (LL) corner
I component of lower right (LR) corner
Q component of lower right (LR) corner
Bits 0 – 7
b0 – b6: bits 0-6 of respective I/Q corner data
b7: Always 0
b0 – b6: bits 7-13 of respective I/Q corner data
b7: Always 0
b0 – b6: bits 14-20 of respective I/Q corner data
b7: Always 0
b0 – b6: bits 21-27 of respective I/Q corner data
b7: Always 0
b0 – b3: bits 28-31 of respective I/Q corner data
b4 – b7: Always 0
3M Touch Systems, Inc. Proprietary Information
3M™ MicroTouch™ Controller SX112 Reference Guide