RSM84510 ETC, RSM84510 Datasheet - Page 5

• Manufacturer Part Number: RSM84510
• Description: PS/2 Scrolling Mouse Controller
• Manufacturer: ETC

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*WUXI RISONG MICRO ELECTRONIC CO.,LTD
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B). PS/2 Mouse Data Report:
C) PS/2 mouse Data Transmission:
c. Remote Mode:
d. Wrap Mode:
Data is transmitted only in response to a Read Data command.
i). In stream mode: A data report is sent at the end of a sample interval.
ii). In remote mode: A data report is sent in response to Read Data command.
Any byte of data sent by the system, except hex EC ( Reset wrap mode ) or hex FF ( Reset ), is returned
by RSM84510.
iii). Data report format:
i). RSM84510 generates the clocking signal when sending data to and receiving data from the system.
ii). The system requests RSM84510 receive system data output by forcing the DATA line to an inactive
level and allowing CLK line to go to an active level.
iii). Data transmission frame:
iv). Data Output ( data from RSM84510 to system ):
If CLK is low ( inhibit status ) , data is no transmission.
If CLK is high and DATA is low ( request-to-send ), data is updated. Data is received from the
system and no transmission are started by RSM84510 until CLK and DATA both high. If CLK and
DATA are both high, the transmission is ready. DATA is valid prior to the falling edge of CLK and
Byte
1
2
3
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2～9
Bit
10
11
0～7
0～7
1
Bit
0
1
2
3
4
5
6
7
Left button status; 1 = pressed
Right button status; 1 = pressed
Middle button status; 1 = pressed
Reserve
X data sign; 1 = negative
Y data sign; 1 = negative
X data overflow; 1 = overflow
Y data overflow; 1 = overflow
X data ( D0 - D7 )
Y data ( D0 - D7 )
Start bit ( always 0 )
Data bits ( D0 - D7 )
Parity bit ( odd parity )
Stop bit ( always 1 )
PS/2 SCROLLING MOUSE CONTROLLER
Description
Function
31/05/02
RSM84510
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