AR0130 Datasheet, PDF (48/53 Pages) ON Semiconductor – CMOS Digital Image Sensor

AR0130: 1/3-Inch CMOS Digital Image Sensor
Power-On Reset and Standby Timing
Power-On Reset and Standby Timing
Power-Up Sequence
The recommended power-up sequence for the AR0130 is shown in Figure 33. The avail-
able power supplies (VDD_IO, VDD, VDD_SLVS, VDD_PLL, VAA, VAA_PIX) must have the
separation specified below.
1. Turn on VDD_PLL power supply.
2. After 0–10s, turn on VAA and VAA_PIX power supply.
3. After 0–10s, turn on VDD power supply.
4. After 0–10s, turn on VDD_IO power supply.
5. After the last power supply is stable, enable EXTCLK.
6. Assert RESET_BAR for at least 1ms.
7. Wait 150000 EXTCLKs (for internal initialization into software standby.
8. Configure PLL, output, and image settings to desired values.
9. Wait 1ms for the PLL to lock.
10. Set streaming mode (R0x301a[2] = 1).
Figure 33: Power Up
VDD_PLL (2.8)
VAA_PIX
VAA (2.8)
VDD (1.8)
VDD_IO (1.8/2.8)
VDD_SLVS
EXTCLK
RESET_BAR
t0
t1
t2
t3
tx
t4
Hard Reset
t5
Internal
Initialization
Software
Standby
t6
PLL Lock
Streaming
AR0130 DS Rev. L Pub. 6/15 EN
48
©Semiconductor Components Industries, LLC, 2015.