AR0130CS

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35

Power-Down Sequence

The recommended power-down sequence for the AR0130

is shown in Figure 32. The available power supplies

(VDD_IO, VDD, VDD_SLVS, VDD_PLL, VAA, VAA_PIX)

must have the separation specified below.

1. Disable streaming if output is active by setting

standby R0x301a[2] = 0.

2. The soft standby state is reached after the current

row or frame, depending on configuration, has

ended.

3. Turn off VDD_SLVS, if used.

4. Turn off VDD_IO.

5. Turn off VDD.

6. Turn off VAA/VAA_PIX.

7. Turn off VDD_PLL.

Figure 32. Power Down

EXTCLK

VDD_PLL (2.8)

VDD_IO (1.8/2.8)

VDD (1.8)

VDD_SLVS

t0

Power Down until Next

Power Up Cycle

t1

t2

t3

t4

VAA_PIX

VAA (2.8)

Table 20. POWER-DOWN SEQUENCE

Symbol

Parameter

Min

Typ

Max

Unit

t0

VDD_SLVS to VDD_IO

0

–

–

ms

t1

VDD_IO to VDD

0

–

–

ms

t2

VDD to VAA/VAA_PIX

0

–

–

ms

t3

VAA/VAA_PIX to VDD_PLL

0

–

–

ms

t4

PwrDn until Next PwrUp Time

100

–

–

ms

22.t4 is required between power down and next power up time; all decoupling caps from regulators must be completely discharged.