PixArt Imaging Inc.
PAN301BSI-208
CMOS Optical Mouse Sensor
6.5.2 Register Power Down Mode
PAN301BSI-208 can be placed in a power-down mode by setting bit 3 in the configuration register via a
serial port write operation. After setting the configuration register, wait at least 1frame times. To get the
chip out of the power-down mode, clear bit 3 in the configuration register via a serial port write operation.
In power-down mode, the serial interface watchdog timer is not available. But, The serial interface still
can read/write normally. For an accurate report after leave power down mode, wait about 3ms before the
micro-controller is able to issue any write/read operation to the PAN301BSI-208.
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
2
3
4
5
6
7
8
9
SCLK
1 frame, max
Address=0x06
Data=0x08
0 0 1 0
1
0
0
0
0
1
1
0
0
0
0
0
DATA
SDIO
IDD
tPDR
Figure 17. Power-down configuration register writing operation
6.6 Error Detection
1.The micro-controller can verify success of write operations by issuing a read command to the same
address and comparing written data to read data.
2. The micro-controller can verify the synchronization of the serial port by periodically reading the
product ID register.
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19
PixArt Imaging Inc.
E-mail: fae_service@pixart.com.tw
V1.1, MAY. 2004
PIXART [ PIXART IMAGING INC. ]
