Datasheet
Datasheet
Datasheet
15/34
BD9271KUT
TSZ02201-0F1F0C100260-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
27.Feb.2015 Rev.004
www.rohm.com
TSZ22111・15・001
◆Description of registers
●ADDR=00h
LEDENA (Ch1 to Ch8 LED Enable control register: Read/Write)
Bit 7 6 5 4 3 2 1 0
Register Name LEDEN[7] LEDEN[6] LEDEN[5] LEDEN[4] LEDEN[3] LEDEN[2] LEDEN[1] LEDEN[0]
Default 1 1 1 1 1 1 1 1
The data in register is updated to the newest data immediately when the new data is written.
●ADDR=01h
LEDENB (Ch9 to Ch16 LED enable control register: Read/Write)
Bit 7 6 5 4 3 2 1 0
Register Name LEDEN[15] LEDEN[14] LEDEN[13] LEDEN[12] LEDEN[11] LEDEN[10] LEDEN[9] LEDEN[8]
Default 1 1 1 1 1 1 1 1
LEDEN Enable control
0 Disable
1 Enable
The data in register is updated to the newest data immediately when the new data is written.
●ADDR=02h
LEDREFA (Analog light modulation setting register - Low 8 bits -: Read/Write)
Bit 7 6 5 4 3 2 1 0
Register Name LEDREF[7] LEDREF[6] LEDREF[5] LEDREF[4] LEDREF[3] LEDREF[2] LEDREF[1] LEDREF[0]
Default 0 1 1 0 0 1 1 0
The data in register is updated to the newest data immediately when the new data is written.
●ADDR=03h
LEDREFB (Analog light modulation setting register - High 4 bits -: Read/Write)
Bit 7 6 5 4 3 2 1 0
Register Name - - - - LEDREF[11] LEDREF[10] LEDREF[9] LEDREF[8]
Default
- - - -
0 0 1 0
LEDREF[11：0] (Register output) LED_REF_12～LED_REF_01（to analog）
000h～0CDh 0CDh
0CEh～7FFh 0CEh～7FFh
800h～FFFh 800h
LED_REF_12 to LED_REF_01 signals to analog are used with the maximum voltage of 1.0V and the minimum voltage of 0.1V,
they are converted with the decoder listed above.
Minimum value (0.1V): 0.1 / 2 * 4095 = 0CDh
Maximum value (1.0V): 1 / 2 * 4095 = 800h
Default value (0.3V): 0.3 / 2 * 4095 = 266h
Note: Reg02h and 03h are synchronized with the leading edge of VSYNC input signal.
The data in register is updated to the newest data immediately when the new data is written.
●ADDR=04h
MASKSET (Error signal output mask time setting register: Read/Write)
Decoder
ERRMSK[1] ERRMSK[0] ERROR MASK Count Value ERROR MASK TIME
0 0 02h(2d) HSYNC : 2～5 clks
0 1 04h(4d) HSYNC : 4～7 clks
1 0 08h(8d) HSYNC : 8～11 clks
1 1 10ｈ(16d) HSYNC : 16～19 clks
Bit 7 6 5 4 3 2 1 0
Register
Name
- - - - - - ERRMSK[1] ERRMSK[0]
Default
- - - - - -
1 0