EPC635 datasheet(92/97 Pages) EPC

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8.7.21. TCMI_polarity

TCMI_polarity

TCMI register

0xCC

Bit No.

Bit name

tcmi_data

_sat_en

tcmi_xsync

_sat_sel

reserved

tcmi_data

_pol

tcmi_xsync

_pol

tcmi_vsync

_pol

tcmi_hsync

_pol

tcmi_edge

_sel

Operation

Default

0x41

tcmi_data_sat_en:

Force DATA[11:0] = 0xFFF (unsigned) / 0x7FF (signed, two's complement) during data-out operation

when corresponding pixel is saturated

0: disabled

1: enabled

tcmi_xsync_sat_sel:

Select XSYNC / SAT output pin function (SAT function is always active high)

0: XSYNC

1: SAT

tcmi_data_pol:

DATA[11:0] unsigned/signed control (for signed output, MSB bit is inverted)

0: unsigned integer (0 ... 4'095). Subtract 2'048 to get correct value (Default)

1: two's complement signed integer (-2'048 ... 2'047)

tcmi_xsync_pol:

XSYNC polarity

0: XSYNC active low

1: XSYNC active high

Note: tcmi_xsync_pol is only effective when tcmi_xsync_sat_sel = 0

tcmi_vsync_pol:

VSYNC polarity

0: VSYNC active low

1: VSYNC active high

tcmi_hsync_pol:

HSYNC polarity

0: HSYNC active low

1: HSYNC active high

tcmi_edge_sel:

DCLK edge select to align all other TCMI outputs

0: falling edge

1: rising edge

8.7.22. ADC_ramp

ADC_ramp

ADC control registers, SEG5 *

0xCD

Bit No.

Bit name

adc_numlsb_sel

reserved

adc_res_sel

adc_skip_

signmsb_en

reserved

Operation

Default

0x13

adc_numlsb_sel:

ADC fine resolution select

00:

8 bit conversion (tConv = 12.250µs)

01:

9 bit conversion (tConv = 13.125µs)

10: 10 bit conversion (tConv = 14.000µs)

11: 11 bit conversion (tConv = 14.875µs)

Note: adc_numlsb_sel is valid for adc_res_sel = 1.

adc_res_sel:

ADC resolution select

0: 12 bit conversion (tConv = 15.750µs)

8, 9, 10 or 11bit (see above)

Note: When adc_res_sel = 1, the registers SIR_lo (0x9D) and ISOURCE_CLK_divider (0x88) must be

set accordingly. Refer to chapter 5.7.3, Table 14 and Table 15.

adc_skip_signmsb_en

ADC sign msb skipping for Grayscale mode. It forces ADC to do one additional lsb conversion (+0.875µs).

It provides full 8-bit unsigned resolution for grayscale modes when combined with tcmi_data_format_sel =

01 and adc_numlsb_sel = 00. It must not be enabled for sine modes where signed output is needed for 3D

TOF distance calculations.

0: disable

1: enable

Note: adc_skip_signmsb_en is valid for adc_res_sel = 1.

Characteristics subject to change without notice

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