ISL51002_07 Datasheet, PDF(13/32 Page) Intersil Corporation – 10-Bit Video Analog Front End (AFE) with Measurement and Auto-Adjust Features

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ISL51002_07 Datasheet, PDF (13/32 Pages) Intersil Corporation – 10-Bit Video Analog Front End (AFE) with Measurement and Auto-Adjust Features

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ISL51002

ADDRESS

(DEFAULT VALUE)

CONFIGURATION REGISTERS

0x10

Input Configuration,

(0x00)

0x11

Sync Source Selection,

(0x00)

0x12

Red Gain MSB, (0x55)

0x13

0x14

0x15

0x16

0x17

0x18

Red Gain LSB, (0x00)

Green Gain MSB, (0x55)

Green Gain LSB, (0x00)

Blue Gain MSB, (0x55)

Blue Gain LSB, (0x00)

Red Offset MSB, (0x80)

BITS

FUNCTION NAME

DESCRIPTION

1:0 Input Channel Select

Sets video muxes as well as HSYNC, VSYNC, and SOG input

muxes.

0: CH0

1: CH1

2: CH2 (single-ended mode only)

3: CH3 (single-ended mode only)

2 Differential Mode Enable 0: Single-Ended Mode

1: Differential Mode

3 DC Coupled Input Enable 0: AC-coupled Inputs

1: DC-coupled Inputs

4 RGB YUV

0: RGB inputs (Clamp DAC = 300mV for R, G, B, half scale

analog shift for R, G, and B, base ABLC target code = 0x00

for R, G, and B)

1: YPbPr inputs (Clamp DAC = 600mV for R and B, 300mV for

G, half scale analog shift for G channel only, base ABLC

target code = 0x00 for G, = 0x80 for R and B)

5 High Voltage Enable

0: Normal Input Range

1: Expanded 2.2V Input Range

6 EXT Clamp SEL

0: Internal CLAMP generation

1: External CLAMP source

7 EXT Clamp POL

0: Active high external CLAMP

1: Active low external CLAMP

0 Sync Select

0: Automatic (HSYNC, VSYNC sources selected based on

sync activity. Multiplexer settings chosen are displayed in

the Input Characteristics register.)

1: Manual (bits 1and 2 determine HSYNC and VSYNC source)

1 HSYNC Source

0: HSYNC input pin

1: SOG

2 VSYNC Source

0: VSYNC input pin

1: Sync Separator output

7:0 Red Gain MSB

5:0 N/A

Red channel gain, where: gain (V/V) = 0.5 + [9:0]/682

MSB/LSB

0x00 00: gain = 0.5 V/V (1.4VP-P input = full range of ADC)

0x55 00: gain = 1.0 V/V (0.7VP-P input = full range of ADC)

0xFF C0: gain = 2.0 V/V (0.35VP-P input = full range of ADC)

7:6 Red Gain LSB

2 LSBs of 10-bit gain word

7:0 Green Gain MSB

See Red Gain

5:0 N/A

7:6 Green Gain LSB

See Red Gain

7:0 Blue Gain MSB

See Red Gain

5:0 N/A

7:6 Blue Gain LSB

See Red Gain

7:0 Red Offset MSB

ABLC off: upper 8-bits to Red offset DAC

ABLC enabled: Red digital offset

0x00 00 = min DAC value or -0x80 digital offset

0x80 00 = mid DAC value or 0x00 digital offset,

0xFF C0= max DAC value or +0x7F digital offset

FN6164.2

September 19, 2007

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