Datasheet

STMPE811 Touchscreen controller
Doc ID 14489 Rev 6 43/65
TSC_DATA_XYZ Touchscreen controller DATA
Address: 0x57 (auto-increment), 0xD7 (non-auto-increment)
Type: R
Reset: 0x00
Description: Data port for TSC data access
The data format from the TSC_DATA register depends on the setting of "OpMode" field in
TSC_CTRL register. The samples acquired are accessed in "packed samples". The size of
each "packed sample" depends on which mode the touchscreen controller is operating in.
The TSC_DATA register can be accessed in 2 modes:
● Autoincrement
● Non autoincrement
To access the 128-sets buffer, the non autoincrement mode should be used.
76543 2 1 0
DATA
[11:0] DATA: data bytes from TSC FIFO
Table 16. Touchscreen controller DATA register
TSC_CTRL in
operation
mode
Number of
bytes to read
from
TSC_DATA_XYZ
Byte0 Byte1 Byte2 Byte3
000 4 [11:4] of X
[3:0] of X
[11:8] of Y
[7:0] of Y [7:0] of Z
001 3 [11:4] of X
[3:0] of X
[11:8] of Y
[7:0] of Y
−
010 2 [11:4] of X [3:0] of X
−−
011 2 [11:4] of Y [3:0] of Y
−−
100 1 [7:0] of Z -
−−