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BIT1612 10-Bit Digital Video Decoder with OSD and T-CON

6.34 IR Decoder Function

BIT1612 提供 NEC IR Decoder function，由 BIT1612 偵測 NEC IR Format，並經由 Interrupt 提供給 MCU 參

考，其相關 Registers 設定請參考下表：

Table 6-66 IR Pulse Detection Register

Mnemonic Address R/W Bits Description Default

0x149[7:0] RW 8 User Defined Customer Code 0x00

R_IR_CC

0x148[7:0] RW 8 User Defined Customer /Code 0x00

NEC IR Polarity

0: Normal

R_POL_IR 0x14A[0] RW 1

1: Invert

Repeat Code Detection Enable

0: Enable Repeat Code

R_IR_DISREPT 0x14A[1] RW 1

1: Disable Repeat Code

NEC IR Clock Base

000: XCLK

001: XCLK/2

010: XCLK/3

011: XCLK/4

100: XCLK/5

101: XCLK/6

110: XCLK/7

R_IR_BASE 0x14A[4:2] RW 3

111: XCLK/8

000

NEC Interrupt Conditions

[5]: Check IR Code = ~IR /Code

[6]: Check IR Data = ~IR /Data

R_IR_CHECK 0x14A[7:5] RW 3

[7]: Check

IR Code = User Defined Customer

Code and

IR /Code = User Defined Customer

/Code

000

NEC IR Decoder Enable

0: Disable

R_IR_EN 0x14B[0] RW 1

1: Enable

R_IR_DB 0x14B[3:2] RW 2 IR De-Bounce Setup 00

IR Code Type

0: First Code

R_IR_TYPE 0x14B[4] R 1

1: Repeat Code

0x14C[7:0] R 8 NEC IR /Data Byte -

0x14D[7:0] R 8 NEC IR /Code Byte -

0x14E[7:0] R 8 NEC IR Data Byte -

R_IR_CODE

0x14F[7:0] R 8 NEC IR Code Byte -

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 114 115

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