AD9393SLASHPCBZ datasheet(25/40 Pages) AD

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AD9393

Rev. 0 | Page 25 of 40

0x30—Bit[5], HDMI HSYNC Polarity

This read-only bit indicates the polarity of the HDMI HSYNC.

0 = HDMI HSYNC polarity is active low. 1 = HDMI HSYNC

polarity is active high.

0x30—Bit[4], HDMI VSYNC Polarity

This read-only bit indicates the polarity of the HDMI VSYNC.

0 = HDMI VSYNC polarity is low active. 1 = HDMI VSYNC

polarity is high active.

0x30—Bits[3:0], HDMI Pixel Repetition

These read-only bits indicate the pixel repetition on HDMI.

0 = 1×, 1 = 2×, 2 = 3×, with a maximum repetition of 10× (0x9).

See Table 14.

Table 14.

Select

Repetition Multiplier

0000

1×

0001

2×

0010

3×

0011

4×

0100

5×

0101

6×

0110

7×

0111

8×

1000

9×

1001

10×

0x34—Bit[5:4], Audio Setup

This bit must be written to 0b11 for proper audio operation.

0x34—Bit[3], Up Conversion Mode

0 = repeat Cb and Cr values. 1 = interpolate Cb and Cr values.

0x34—Bit[2], CrCb Filter Enable

Enables the FIR filter for 4:2:2 CrCb output.

COLOR SPACE CONVERSION

The default power up values for the color space converter

coefficients (Register 0x34 through Register 0x4C) are set

for ATSC RGB-to-YCrCb conversion. They are completely

programmable for other conversions.

0x34—Bit[1], CSC_ENABLE

This bit enables the color space converter. 0 = disable color

space converter. 1 = enable color space converter. The power-

up default setting is 0.

0x35—Bits[6:5], CSC_MODE

These two bits set the fixed-point position of the CSC

coefficients, including the A4, B4, and C4 offsets.

Table 15. CSC Fixed Point Converter Mode

Select

Result

±1.0, −4096 to +4095

±2.0, −8192 to +8190

±4.0, −16,384 to +16,380

0x35—Bits[4:0], CSC_COEFF_A1 MSB and 0x36—

Bits[7:0], CSC_COEFF_A1 LSB

Conversion Coefficient A1. These bits, combined with the

eight LSBs of Register 0x36 form a 13-bit, twos complement

coefficient, which is user programmable. The equation takes

the form of:

ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4

GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4

BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4

The default value for the 13-bit A1 coefficient is 0x0C52.

0x37—Bits[4:0], CSC_COEFF_A2 MSB and 0x38—

Bits[7:0], CSC _COEFF_A2 LSB

Conversion Coefficient A2. Combined with the eight LSBs of

coefficient that is user programmable. The equation takes

the form of:

ROUT = (A1 × RIN) + (A2 × GIN) + (A3 × BIN) + A4

GOUT = (B1 × RIN) + (B2 × GIN) + (B3 × BIN) + B4

BOUT = (C1 × RIN) + (C2 × GIN) + (C3 × BIN) + C4

The default value for the 13-bit A2 coefficient is 0x0800.

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