CS7620 datasheet(20/70 Pages) CIRRUS

20 / 70 page

CS7620

DS301PP2

pixel clock rate.

3.6

8-Bit General Purpose DACs

Two 8-bit current-output DACs are available for

external use. Table 4 shows the output specifica-

tions of these DACs.

3.7

Stand By Mode

Stand-by mode can be entered using the PWR_DN

pin. All circuitry on chip including the DACs can

be powered down. Various functional blocks can

be powered down individually, and are controlled

through registers. Note that the DACs can be pow-

ered down in that way if not in use. During Stand

By mode, the register contents are maintained and

Expose

RD_OUT

HSYNC

V1 ... V4

H1 ... H4

S1 ... S4

vsync_md = 1

vsync_md = 0

262 lines

first read-out line

last read-out line

Figure 21. High Resolution Mode

Expose

RD_OUT

HSYNC

V1 ... V4

H1 ... H4

S1 ... S4

vsync_md = 1

vsync_md = 0

262 lines

first read-out line

last read-out line

don’t care

262 lines

first read-out line

picture n

picture (n+1)

Figure 22. Low Resolution Mode

Parameter

High impedance

mode

Low impedance

mode

Iout

2.155 mA

8.7 mA

464

Ω

115

Ω

Table 4. General Purpose DAC specifications

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