PixArt Imaging Inc.
PAN301BSI-208
CMOS Optical Mouse Sensor
tSIWTT
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
SCLK
SDIO
tRESYNC
1us, min
Hi-Z
ADDRESS(R/W)
DATA
Figure 14. Re-synchronous serial interface using watchdog timer timeout
6.5 Power Down Mode
There are two different ways to entry power down mode, using the PD line or register setting.
6.5.1 PD Line Power Down Mode
To place the PAN301BSI-208 in a low power mode to meet USB suspend specification, raise the PD line
at least 700us. Then PD line can stay high, with the PAN301BSI-208 in the shutdown state, or the PD pin
can be lowered, returning the PAN301BSI-208 to normal operation.
PD
tPDW
700us,min
IDD
500us
90frames
tPD
500us
tPUPD
30.5ms
Figure 15. Power down minimum pulse width
PD
tPDW
700us,min
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
2
3
4
5
6
7
8 9
SCLK
SDIO
Hi-Z
ADDRESS(R/W)
DATA
Figure 16. PD line power down mode
All rights strictly reserved any portion in this paper shall not be reproduced, copied or transformed to any other forms without permission.
PixArt Imaging Inc.
18
E-mail: fae_service@pixart.com.tw
V1.1, MAY. 2004
PIXART [ PIXART IMAGING INC. ]
