THCV231_16 Datasheet, PDF (20/56 Pages) THine Electronics, Inc. – The THCV231 and THCV236 are designed to support video data transmission between the host and display.

Read/Write access to Sub-Link Slave Register
HOST MPU can access to Sub-Link Slave’s register via Sub-Link Master by Sub-Link Master register settings.
Register address of Sub-Link Slave is from 0x80 to 0xFF. See Register Map for more information.
Sub-Link Slave Device
Sub-Link Block
2-wire
Master
Sub-Link
Slave
Register
(Address
0x80 – 0xFF)
Sub-Link
line
Sub-Link Master Device
Sub-Link Block
Sub-Link
Master
2-wire
Slave
Register
(Address
0x00 – 0x7F)
SD1(SCL)
SD0(SDA)
INT
Host
MPU
Interrupt signal
LOCKN/MSSEL=0 AIN1,AIN0 = User Select
Figure 9. Host MPU to Sub-Link Slave Register access configuration
Table 19. Sub-Link slave register Write Procedure
Step
Description
R/W Address
1 Write 1 or 0 and clear(auto clear) access status register (2WIRE_ACS_END_INT). W
0x02 bit7
2 Set the data for Sub-Link Slave to write (Max 16byte).
W 0x10-0x1F
Set Device ID of Sub-Link Master device.
3
W
(Value corresponding to AIN1 and AIN0 setting. e.g.[AIN1,AIN0]=[0,0] → 7’h0B)
0x20
Set the byte number written to Sub-Link Slave (Max 16byte).
4
(Byte number = register value + 1)
W
0x21
5 Set the start address of Sub-Link Slave register to write.
W
0x23
6 Write 1 to WR_START_8B. (Start write access to Sub-Link Slave register)
W
0x25 (*1)
7 2-wire serial slave of Sub-Link Master perform clock stretching until Sub-Link Slave
-
-
(*2) register access is completed.
7 When write access is completed, 2WIRE_ACS_END_INT register value become 1
-
-
(*3) and interrupt occurs (INT=H → L).
8 If write access was normally ended, read value should be “0x1”.
R
0x02 bit7
*1 It’s Prohibit that HOST MPU start access to Sub-Link Slave or remote 2-wire serial slave before the previous access to
Sub-Link Slave or remote side 2-wire serial slave is completed.
*2 When 2WIRE_MODE = 00 (Clock Stretching Mode)
*3 When 2WIRE_MODE = 01 (No Clock Stretching Mode)
THCV231_THCV236_Rev.2.30_E
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