Silan

Semiconductors

SC84510

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 1.0

2000.12.31

10

(g) Read Device Type (F2)

SC84510 always echoes “ FA, 00 “ following this command.

(h) Set Remote Mode (F0)

Data values are reported only in response to a Read Data command.

(i) Set Wrap Mode (EE)

Wrap mode remains until Reset (FF) or Reset Wrap Mode (EC) is received.

(j) Reset Wrap Mode (EC)

SC84510 returns to the previous mode of operation after receiving this command.

(k) Read Data (EB)

This command is executed in either remote or stream mode. The data is transmitted even if there has

been no movement since the last report or the button status is unchanged. Following a Read Data

command, the registers are cleared after a data transmission.

(l) Set Stream Mode (EA)

This command sets SC84510 in stream mode.

(m) Status Request (E9)

When this command is issued by the system, SC84510 respond with a 3-byte status report as follows:

Byte

Bit

Description

1

0

1 = Right button pressed

1

1 = Middle button pressed

2

1 = Left button pressed

3

Reserved

4

0 = Normal speed, 1 = Auto-speed

5

0 = Disabled, 1 = Enabled

6

0 = stream mode, 1 = Remote mode

7

Reserved

2

0~7

Current resolution setting (D0~D7)

3

0~7

Current sampling rate (D0~D7)

(n) Set Resolution (E8, XX)

SC84510 provides four resolutions selected by the second byte of this command as follows:

Second Byte XX

Resolution

00

8 dots/count

01

4 dots/count

02

2 dots/count

03

1 dot/count

(o) Set Auto-speed (E7)