Silan
Semiconductorsꢀ
SC84502
ꢀ
Byte
Bit
0
Description
1=Right button pressed
1=Middle button pressed
1= Left button pressed
Reserved
1
1
2
3
4
0=Normal speed, 1=Autospeed
0=Disabled, 1=Enabled
0=Stream mode, 1=Remote mode
Reserved
5
6
7
2
3
0–7
0-7
Current resolution setting (D0-D7)
Current sampling rate (D0-D7)
n). Set Resolution ( E8,XX )
SC84502 provides four resolutions selected by the second byte of this command as follows:
Second Byte XX
Resolution
8 dot/count
4 dot/count
2 dot/count
1 dot/count
00
01
02
03
o). Set Autospeed ( E7 )
At the end of a sample interval in the stream mode, the current X and Y data values are converted new
values. The sign bits are not involved in this conversion. The conversion is only in stream mode. The
relationship between the input and output count follows:
Input
Output
0
0
1
1
2
1
3
3
6
4
5
9
N (≥6)
2.0*N
p). Reset Autospeed ( E6 )
This command restore normal speed.
6.TESTING MODE
Whenever OPT is connected to OSC OUT, the chip will enter buyer's testing mode. The X direction output signals
of comparators will present to L and M pin. Pressing "R" key can toggle the output from X direction to Y direction.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
ꢀ
2000.12.31
Rev: 1.0
ꢀ
10
SILAN [ SILAN MICROELECTRONICS JOINT-STOCK ]
