Data Sheet

Copyright © Bridgetek Pte Ltd 47
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
302188h
REG_SPI_WIDTH
3
r/w
0
QSPI bus width setting
Bit [2]: extra dummy cycle on read
Bit [1:0]: bus width (0=1-bit, 1=2-bit,
2=4-bit)
30218Ch
REG_TOUCH_DIRECT_XY
REG_CTOUCH_TOUCH2_XY
32
r/o
-
Compatibility mode: Touch screen direct
(x-MSB16; y-LSB16) conversions
Extended mode: touch-screen screen
data for touch 2 (x-MSB16; y-LSB16)
302190h
REG_TOUCH_DIRECT_Z1Z2
REG_CTOUCH_TOUCH3_XY
32
r/o
-
Compatibility mode: Touch screen direct
(z1-MSB16; z2-LSB16) conversions
Extended mode: touch-screen screen
data for touch 3 (x-MSB16; y-LSB16)
302194h-
302560h
Reserved
-
-
-
Reserved
302564h
REG_DATESTAMP
128
r/o
-
Stamp date code
302574h
REG_CMDB_SPACE
12
r/w
FFCh
Command DL (bulk) space available
302578h
REG_CMDB_WRITE
32
w/o
0
Command DL (bulk) write
30257Ch
REG_ADAPTIVE_FRAMERATE
1
r/w
1
Reduce frame rate during complex
drawing
3025ECh
REG_PLAYBACK_PAUSE
1
r/w
0
Audio playback pause
3025F0h
REG_FLASH_STATUS
2
r/w
0
Flash status
Table 5-2 Overview of BT815/6 Registers
Note: All register addresses are 4-byte aligned. The value in the “Bits” column refers to the number of
valid bits from bit 0 unless otherwise specified; other bits are reserved.
5.2 Chip ID
The BT815/6 Chip ID can be read at memory location 0C0000h – 0C0003h. The reset values of these
bytes are:
- 0C0000h: 08h
- 0C0001h: 15h (BT815), 16h(BT816)
- 0C0002h: 01h
- 0C0003h: 00h
Note that the Chip ID location can be over-written by software.