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BIT1612 10-Bit Digital Video Decoder with OSD and T-CON
48
0: Type 1
1: Type 2
R_SQP_LPPI 0x0CF[6:5] RW 2 Sub-Carrier Phase Detection Factor 1 01
R_SQP_SPUP 0x0CF[7] RW 1 Sub-Carrier Phase Detection Factor 2 0
R_STD_COUNT 0x0D0[5:0] RW 6 Color Standard Detect Ready Threshold 0x38
Chroma Phase Detection Mode
0: Mode 1
R_CHROMA_PHASE 0x0D0[6] RW 1
1: Mode 2
0
R_STD_OFF00 0x0D1[7:0] RW 8 Burst Freq. Offset for 3.57MHz 0x00
R_STD_OFF01 0x0D2[7:0] RW 8 Burst Freq. Offset for 4.2MHz 0x08
R_STD_OFF10 0x0D3[7:0] RW 8 Burst Freq. Offset for 4.43MHz 0x00
6.28.9 Comb Filter Process
BIT1612 Video Decoder 提供 NTSC 3-Line 和 PAL 5-Line 的 Adaptive Comb Filter 來做 Y/C 分離，
其相關設定請參考下表。
Table 6-49 Comb Filter Process Register
Mnemonic Address R/W Bits Description Default
Comb Filter Enable
0: Disable
R_COMB_EN 0x0F0[6] RW 1
1: Enable
0
R_COMB_CTHD 0x0D4[6:0] RW 7 C Threshold Value 0x20
R_COMB_YTHD12 0x0D5[7:0] RW 8
Y Threshold Value for
NTSC: Abs (Line0-Line1) or Abs (Line1-Line2)
PAL: Abs (Line0-Line2) or Abs (Line2-Line4)
0x20
R_COMB_YTHD3 0x0D6[7:0] RW 8
Y Threshold Value for
NTSC: Abs (Line0-Line2)
PAL: Abs (Line0-Line4)
0x10
R_LINE_THD1 0x0D7[7:0] RW 8 Y Line Threshold1 Value 0x10
R_LINE_THD2 0x0D8[7:0] RW 8 Y Line Threshold2 Value 0x0A
SECAM Standard Control
0: Force 1 D
R_SECS_AUTOSW 0x0D9[0] RW 1
1: Auto
1
NTSC_4.43MHz_60Hz Standard Control
0: Force 1 D
R_N44360_AUTOSW 0x0D9[1] RW 1
1: Auto
1
No Color Burst Control
0: Force 1 D
R_NOCOR_AUTOSW 0x0D9[2] RW 1
1: Auto
1
Middle Filter Selection
00: Mode0
01: Mode1
10: Mode2
R_OUT_SEL 0x0D9[5:4] RW 2
11: Mode3
00
Y Domain Force 1D Filter Selection (when
R_Y_AUTO = 0)
00: Notch Filter
01: Two-Line Filter (Mode 0)
10: Two-Line Filter (Mode 1)
R_Y_SEL 0x0DA[1:0] RW 2
11: Three-Line Filter
00
Y Domain Comb Filter Enable
0: Fixed Filter
R_Y_AUTO 0x0DA[2] RW 1
1: Adaptive Comb Filter
1
Y Domain Notch Filter Selection
00: Type 0
R_Y1D_SEL 0x0DA[5:4] RW 2
01: Type 1
00
- BIT1612 1
- Content 2
- 1 General Description 11
- 2 Features 11
- 3 Order Information 13
- 4 Block Diagram 13
- 5 Pin Definition 14
- 6 Functional Description 18
- 6.4 Pad Type Setup 22
- 6.6 System Enable and Reset 23
- 6.7 Clock Domain Systems 24
- Panel Active Window 26
- Blank Range 26
- HSYNC Output 26
- VSYNC Output 26
- 6.9 Output Data Path 27
- 6.10 Special Output Setup 28
- Input VSYNC 29
- Output VSYNC 29
- 6.12 TCON Function 30
- 6.15 Background 2 33
- 6.17 Auto Blank Screen 34
- Input Image Window 35
- HSYNC Input 35
- VSYNC Input 35
- (Internal VD) 36
- R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 37
- G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 37
- B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 37
- 6.20.7 RGB565 38
- 6.21 Input Mode Selection 39
- Background 41
- 6.24 Scaling Engine 42
- 6.25 Timing Adjustment 45
- Pre-Image Enhancement 46
- Post-Image Enhancement 46
- 6.26.3 Sharpness Process 47
- 6.26.7 LUT Gamma Correction 48
- 6.26.8 Dither 48
- Factor 0x80 49
- 6.27 PWM Function 50
- R_PWM_REF 51
- Base on panel clock 51
- R_PWM_FREQ 51
- R_PWM_DUTY 51
- Base on reference clock 51
- 6.28.5 VBI Data Slicer 55
- 6.28.6 Source Detection 55
- 6.28.7 Luminance Process 56
- 6.28.8 Chroma Process 57
- 6.28.9 Comb Filter Process 58
- 6.28.10 AGC and ACC Process 60
- 6.28.11 AFE and PLL Control 63
- 6.30 Serial RGB Output 68
- 6.31 BIT1690 Interface 68
- 6.32 OSD Function 69
- 6.32.2 OSD Memory Mapping 70
- R_Wx_INDEXS 71
- R_Wx_INDEXE 71
- R_BANK_SEL = 000 72
- If Display RAM 72
- {0x503[4],0x403[6:0]} = 72
- {0x501[4],0x401[6:0]} 73
- R_Wx_INDEX_S 76
- R_OSD_LAYER[2:0] = 001 77
- 6.32.7 OSD Clock Control 79
- 6.33 Timer 80
- 6.34 IR Decoder Function 81
- 6.35 GPI and KEY Function 82
- 6.36 PLL and OSC Pads 82
- 6.37 Auto Detection 83
- 01: From VSYNC1 Pin 85
- 10: From HSYNC2 Pin 85
- 11: From VSYNC2 Pin 85
- 7 User Interface 86
- 7.2.1 Architecture 89
- 7.2.2 Instruction Set 91
- 7.2.3 Start and Interrupt 94
- 7.2.6 Watch Dog Timer 95
- 7.2.8 TWSI Write/Read 96
- 7.2.9 SPI Interface 96
- 7.2.10 Debug Mode 96
- 7.3 Slave Mode 97
- 7.3.2 TWSI Protocol 98
- From Pin 104 Setting 100
- From Pin 105 Setting 100
- 8 Timing Diagram 101
- 9 Electrical Characteristic 103
- 10 Soldering Information 104
- 11 Package Information 105
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