ADNS-5050 Avago Technologies US Inc., ADNS-5050 Datasheet - Page 13

• Manufacturer Part Number: ADNS-5050
• Description: 8 DIP SFF Navigation Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-5050

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 516-2261; ADNS-5050

NOTE:
The 0.5/f
start of the next read or write command, the ADNS-5050 will hold the state of data on SDIO until the falling edge of SCLK.
Read Operation
A read operation, defined as data going from the ADNS-5050 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 SDIO, and
has a “0” as its MSB to indicate data direction. The second byte contains the data and is driven by the ADNS-5050 over
SDIO. The sensor outputs SDIO bits on falling edges of SCLK and samples SDIO bits on every rising edge of SCLK.
Read Operation
Microcontroller to ADNS-5050 Handoff
DETAIL "B"
ADNS-5050 TO
MICROCONTROLLER
SDIO HANDOFF
ADNS-5050 to Microcontroller Handoff
13
DETAIL "A"
MICROCONTROLLER
TO ADNS-5050
SDIO HANDOFF
SCLK
CYCLE #
SCLK
SDIO
SCLK
minimum high state of SCLK is also the minimum SDIO data hold time of the ADNS-5050. Since the falling edge of SCLK is actually the
1
0
SCLK
SDIO
SCLK
SDIO
A 6
2
SDIO DRIVEN BY MICRO-CONTROLLER
3
t
A 5
DLY
A
t
1
SETUP
RELEASED BY 5050
4
A 4
D
0
t
5
A 3
HOLD
6
A 2
R/W BIT OF NEXT ADDRESS
DRIVEN BY MICRO
A 1
7
A
0
A 0
8
DETAIL "A"
t
SRAD
9
D 7
0 ns, MIN.
10
D 6
11
SDIO DRIVEN BY ADNS-5050
D 5
Hi-Z
12
D 4
13
D 3
t
0 ns, MIN.
D
DLY
7
14
D 2
D
15
6
D 1
t
DLY
16
D 0
DETAIL "B"