ADNB-2013 HP [Agilent(Hewlett-Packard)], ADNB-2013 Datasheet - Page 9

• Manufacturer Part Number: ADNB-2013
• Description: Optical Mouse Sensor
• Manufacturer: HP [Agilent(Hewlett-Packard)]

PS/2 Mode Output Waveforms @ 24 MHz
Host Sending Data Timing Diagram
Notes:
1. The mouse checks the DATA line. If the line is low, the system has data to transmit. The DATA line is set inactive when the start bit (always 0) is
2. The mouse samples the DATA line for each bit while the CLK line is high. Data must be stable within 1 microsecond after the rising edge of the
3. The mouse checks for a high stop bit after the 10th CLK. If the DATA line is low, the mouse continues to clock until the DATA line becomes high,
4. The mouse pulls the DATA line low, producing the line-control bit.
5. The host can pull the CLK line low, inhibiting the mouse.
Timing Parameter
T1
T2
T3
Host Receiving Timing Diagram
Notes:
1. The host can hold the clock signal low to inhibit the next transmission.
2. The host raises the clock line to allow the next transmission.
3. All times given below assume a 24 MHz resonator and are dependent upon its accuracy.
Timing Parameter
T1
T2
T3
T4
T5
9
placed on the DATA line.
CLK line.
then clocks the line-control bit, and at the next opportunity sends a Resend command to the system.
DATA START BIT
CLK
CLK
DATA
T1
CLK
1ST
INHIBIT
T3
(1)
Description
Duration of CLK high
Duration of CLK low
Time from falling CLK transition, to date transition
Description
Time from DATA transition to falling edge of CLK
Time from rising edge of CLK to DATA transition
Duration of CLK low
Duration of CLK high
Time to mouse inhibit after clock 11 to ensure the
mouse does not start another transmission
I/O
T2
START BIT
T4
T1
BIT 0
2ND
CLK
CLK
1ST
T3
T2
BIT 0
(2)
BIT 1
3RD
CLK
2ND
CLK
BIT 2
CLK
9TH
PARITY BIT
PARITY BIT
(2)
10TH
CLK
10TH
CLK
STOP
BIT
(3)
Min. Time
Min. Time
22.5 sec
22.5 sec
0 sec
3.75 sec
3.75 sec
22.5 sec
22.5 sec
0 sec
T5
STOP BIT
11TH
11TH
CLK
CLK
(4)
(5)
(1, 2)
Max. Time
37.5 sec
37.5 sec
22.5 sec
Max. Time
18.75 sec
18.75 sec
37.5 sec
37.5 sec
37.5 sec