Data Sheet

Copyright © Bridgetek Pte Ltd 45
BT81X (815/6) Advanced Embedded Video Engine Datasheet
Version 1.0
Document No.: BRT_000220 Clearance No.: BRT#126
Address
(hex)
Register Name
Bit
s
r/
w
Reset
value
Description
0: extended mode (multi-touch)
1: FT800 compatibility mode (single
touch).
30210Ch
REG_TOUCH_CHARGE
REG_EHOST_TOUCH_X
16
r/w
9000
Touch charge time, units of 6 clocks
Touch host mode: touch x value updated
by host
302110h
REG_TOUCH_SETTLE
4
r/w
3
Touch settle time, units of 6 clocks
302114h
REG_TOUCH_OVERSAMPLE
REG_EHOST_TOUCH_ID
4
r/w
7
Touch oversample factor
Touch host mode: touch ID, 0-4
302118h
REG_TOUCH_RZTHRESH
REG_EHOST_TOUCH_Y
16
r/w
FFFFh
Touch resistance threshold
Touch host mode: touch x value updated
by host
30211Ch
REG_TOUCH_
RAW_XY
REG_CTOUCH_TOUCH1_XY
32
r/o
-
Compatibility mode: touch-screen raw (x-
MSB16; y-LSB16)
Extended mode: touch-screen screen
data for touch 1 (x-MSB16; y-LSB16)
302120h
REG_TOUCH_RZ
REG_CTOUCH_TOUCH4_Y
16
r/o
-
Compatibility mode: touch-screen
resistance
Extended mode: touch-screen screen Y
data for touch 4
302124h
REG_TOUCH_
SCREEN_XY
REG_CTOUCH_TOUCH0_XY
32
r/o
-
Compatibility mode: touch-screen screen
(x-MSB16; y-LSB16)
Extended mode: touch-screen screen
data for touch 0 (x-MSB16; y-LSB16)
302128h
REG_TOUCH_
TAG_XY
32
r/o
-
Touch-screen screen (x-MSB16; y-
LSB16) used for tag 0 lookup
30212Ch
REG_TOUCH_TAG
8
r/o
-
Touch-screen tag result 0
302130h
REG_TOUCH_
TAG1_XY
32
r/o
-
Touch-screen screen (x-MSB16; y-
LSB16) used for tag 1 lookup
302134h
REG_TOUCH_TAG1
8
r/o
-
Touch-screen tag result 1
302138h
REG_TOUCH_
TAG2_XY
32
r/o
-
Touch-screen screen (x-MSB16; y-
LSB16) used for tag 2 lookup
30213Ch
REG_TOUCH_TAG2
8
r/o
-
Touch-screen tag result 2
302140h
REG_TOUCH_
TAG3_XY
32
r/o
-
Touch-screen screen (x-MSB16; y-
LSB16) used for tag 3 lookup
302144h
REG_TOUCH_TAG3
8
r/o
-
Touch-screen tag result 3