Data Sheet

Copyright © Bridgetek Pte Ltd 46
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
302148h
REG_TOUCH_
TAG4_XY
32
r/o
-
Touch-screen screen (x-MSB16; y-
LSB16) used for tag 4 lookup
30214Ch
REG_TOUCH_TAG4
8
r/o
-
Touch-screen tag result 4
302150h
REG_TOUCH_TRANSFORM_A
32
r/w
00010000h
Touch-screen transform coefficient
(s15.16)
302154h
REG_TOUCH_TRANSFORM_B
32
r/w
00000000h
Touch-screen transform coefficient
(s15.16)
302158h
REG_TOUCH_TRANSFORM_C
32
r/w
00000000h
Touch-screen transform coefficient
(s15.16)
30215Ch
REG_TOUCH_TRANSFORM_D
32
r/w
00000000h
Touch-screen transform coefficient
(s15.16)
302160h
REG_TOUCH_TRANSFORM_E
32
r/w
00010000h
Touch-screen transform coefficient
(s15.16)
302164h
REG_TOUCH_TRANSFORM_F
32
r/w
00000000h
Touch-screen transform coefficient
(s15.16)
302168h
REG_TOUCH_CONFIG
16
r/w
8381h
(BT816)
0381h
(BT815)
Touch configuration.
RTP/CTP select
RTP: short-circuit, sample clocks
CTP: I2C address, CTPM type, low-power
mode, touch host mode
30216Ch
REG_CTOUCH_TOUCH4_X
16
r/o
-
Extended mode: touch-screen screen X
data for touch 4
302170h
REG_EHOST_TOUCH_ACK
4
r/w
0
Touch host mode: acknowledgement
302174h
REG_BIST_EN
1
r/w
0
BIST memory mapping enable
302178h-
302187Ch
Reserved
-
-
-
Reserved
302180h
REG_TRIM
5
r/w
0
Internal relaxation clock trimming
302184h
REG_ANA_COMP
8
r/w
0
Analogue control register