Intersil ISL79985 Programmable white peak control for the y-channel Datasheet

DATA SHORT
To request the full datasheet, please visit: ISL79985 or ISL79986
4-Channel Differential Input Video Decoder with
MIPI-CSI2/BT.656 Output for Around View Applications
ISL79985, ISL79986
Features
The ISL79985, ISL79986 integrates four high quality
NTSC/PAL/SECAM video decoders that convert the analog
composite video signal to digital component YCbCr data for
automotive applications. Each channel contains a 10-bit ADC
that supports single-ended, differential, and pseudo
differential composite video inputs, proprietary clamp and
gain controllers, thus, utilizes a 4H-comb filter for separating
luminance and chrominance to reduce cross noise artifacts.
Integrated short-to-battery and short-to-ground detection,
advanced image enhancement capabilities such as the
programmable Automatic Contrast Adjustment (ACA), and the
MIPI-CSI2/ITU-R BT.656 output interface make the ISL79985,
ISL79986 an ideal solution for demanding automotive around
view applications.
Analog Video Decoder
Applications
• Digital horizontal PLL for synchronization processing and
pixel sampling
• Software selectable analog input control allows for
combinations of single-ended CVBS and differential CVBS
• Integrated four video analog anti-aliasing filters and 10-bit
CMOS ADCs with differential and single-ended inputs
• Fully programmable static gain or automatic gain control for
the Y-channel
• Programmable white peak control for the Y-channel
• 4-H adaptive comb filter Y/C separation
• PAL delay line for color phase error correction
• Digital subcarrier PLL for accurate color decoding
• Automotive surround view
• Advanced synchronization processing and sync detection for
handling non-standard and weak signal
• Automatic color control and color killer
• Chroma IF compensation
• Programmable output cropping
AFE
CLKO/ MPP[1]
CSC
CSC
ADC
AGC
ACA
AA
FILTER
4H COMB
VIDEO DE C
ACA
VIN1A
MPP[0]
VIN1B
DEC_CH
REGFILE
DIAG1
AA
FILTER
4H COMB
VIDEO DE C
ADC
AGC
VIN4A
VIN4B
AA
FILTER
DEC_CH
DIAG4
PLL
OSC
XTO
XTI
PD
SHORT
DETECTION
MIP ID1
REGFILE
I2C INTE RFACE
SCLK
RSTB
MIP ID0
REGFILE
4H COMB
VIDEO DE C
ADC
AGC
MIP IC
REGFILE
IRQ
DEC_CH
DIAG3
CSC
4H COMB
VIDEO DE C
ADC
AGC
CSC
AA
FILTER
ACA
VIN3B
ACA
VIN3A
SDAT
DEC_CH
DIAG2
REGFILE
MIP I CSI
AND DPHY
VIN2B
FIFO CONTROL
LINE INTERLEAVING ENGINE
VIN2A
FIGURE 1. ISL79985 BLOCK DIAGRAM
June 24, 2016
FN8851.2
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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ISL79985, ISL79986
Features (Continued)
Video Processing
Miscellaneous
• Automatic Contrast Adjustment (ACA)
• Low power consumption
• Programmable hue, brightness, saturation, contrast and
sharpness.
• Power save and power-down mode
• Image enhancement with peaking and CTI
• Short-to-ground detection
MIPI Output (ISL79985)
• 2-wire MPU serial bus interface
• MIPI CSI-2 Version 1.1 compliant unidirectional output format
• Single 27MHz crystal for all operations
• Standard virtual channel support
• 1.2V/3.3 V power supply
• One or two data lanes
• 48 Ld QFN package
• YUV422 or RGB565 output format
• AEC-Q100 qualified
• Short-to-battery detection
Digital Output (ISL79986)
• Supports standard ITU-R BT.656 format or time multiplexed
output with 27/54/108MHz
• Output voltage 1.8V to 3.3V
AFE
CLKO/ MPP[1]
AA
FILTER
ADC
AGC
DEC_CH
MPP[0]
CSC
VIN1B
4H COMB
VIDEO DEC
ACA
VIN1A
REGFILE
DIAG1
4H COMB
VIDEO DEC
DEC_CH
DIAG3
AA
FILTER
4H COMB
VIDEO DEC
ADC
AGC
DEC_CH
DIAG4
RSTB
XTO
XTI
SHORT
DETECTION
REGFILE
I2C
INTERFACE
SCLK
PLL
OSC
PD
CSC
VIN4B
REGFILE
ACA
VIN4A
VD[7:0]
REGFILE
IRQ
ADC
AGC
SDAT
AA
FILTER
CSC
VIN3B
ACA
VIN3A
REGFILE
BT 656
DEC_CH
DIAG2
FIFO CONTROL
4H COMB
VIDEO DEC
ADC
AGC
LINE INTERLEAVING ENGINE
AA
FILTER
CSC
VIN2B
ACA
VIN2A
FIGURE 2. ISL79986 BLOCK DIAGRAM
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