ADNS-7530 Avago Technologies US Inc., ADNS-7530 Datasheet - Page 17

• Manufacturer Part Number: ADNS-7530
• Description: Optical Mouse Sensor,DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-7530

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Write operation, defined as data going from the micro-controller to the ADNS-7530, is always initiated by the micro-
controller and consists of two bytes. The first byte contains the address (seven bits) and has a “1” as its MSB to indicate
data direction. The second byte contains the data. The ADNS-7530 reads MOSI on rising edges of SCLK.
Figure 15. rite Operation
Figure 1 . MOSI Setup and Hold Time
A read operation, defined as data going from the ADNS-7530 to the micro-controller, is always initiated by the micro-
controller and consists of two bytes. The first byte contains the address, is sent by the micro-controller over MOSI, and
has a “0” as its MSB to indicate data direction. The second byte contains the data and is driven by the ADNS-7530 over
MISO. The sensor outputs MISO bits on falling edges of SCLK and samples MOSI bits on every rising edge of SCLK.
Figure 17. ead Operation
Figure 1 . MISO Delay and Hold Time
Note:
The 0.5/fSCLK minimums high state of SCLK is also the minimum MISO data hold time of the ADNS-7530. Since the falling edge of SCLK is actually
the start of the next read or write command, the ADNS-7530 will hold the state of data on MISO until the falling edge of SCLK.
17
M I S O
t
SCLK
MOSI
SCLK
Cycle #
MOSI
MISO
SCLK
MISO
N C S
S C L K
M O S I
NCS
SCLK
DLY-MISO
ead Operation
rite Operation
1
0
t
setup , MOSI
1
1
2
A
6
D
2
A
0
6
3
A
t
5
t
Hold,MOSI
3
A
HOLD-MISO
5
4
A
4
4
A
4
5
A
A
5
3
3
M O S I D riv e n b y M ic r o -C o n tro lle r
6
A
6
A
2
2
7
A
A
7
1
1
8
A
0
A
0
8
9
D
7
1 0
D
9
D
6
7
t
SRAD delay
1 1
D
10
D
5
6
1 2
D
4
11
D
5
1 3
D
3
12
D
4
1 4
D
2
13
D
1 5
3
D
1
14
D
1 6
D
2
0
15
D
1
16
D
0
1
1
2
A
6