ADNS-3000 Avago Technologies US Inc., ADNS-3000 Datasheet - Page 14

• Manufacturer Part Number: ADNS-3000
• Description: Low Power Wireless LED Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-3000

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2308-5

Write Operation
Write operation, defined as data going from the micro-controller to the ADNS-3000, 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
write sequence. The second byte contains the data. The ADNS-3000 reads MOSI on rising edges of SCLK.
NCS
SCLK
MOSI
MISO
MOSI setup and hold time during write operation
Read Operation
A read operation, defined as data going from the ADNS-3000 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-3000 over
MISO. The sensor outputs MISO bits on falling edges of SCLK and samples MOSI bits on every rising edge of SCLK.
14
SCLK
MOSI
NCS
SCLK
Cycle #
SCLK
MOSI
MISO
t
MOSI delay and hold time during read operation
DLY-MISO
SCLK
MISO
t
setup-MOSI
1
1
1
0
2
A
t
hold-MOSI
6
D
0
2
A
t
HOLD-MISO
6
3
A
5
A
3
5
4
A
4
4
A
4
5
A
3
5
A
3
6
A
2
6
A
7
A
2
1
MOSI DRIVEN BY MICRO-CONTROLLER
8
A
7
A
1
0
9
D
A
7
0
8
Note: The 500 ns minimum high state of SCLK is also the minimum
MISO data hold time of the ADNS-3000. Since the falling edge of SCLK is
actually the start of the next read or write command, the ADNS-3000 will
hold the state of data on MISO until the falling edge of SCLK.
10
D
6
9
D
11
D
7
5
t
SRAD DELAY
10
12
D
D
6
4
13
D
11
D
3
5
14
D
2
12
D
4
15
D
1
13
D
3
16
D
0
14
D
2
15
D
1
1
1
16
D
0
2
A
6