ADNS-5060 Avago Technologies US Inc., ADNS-5060 Datasheet - Page 19

• Manufacturer Part Number: ADNS-5060
• Description: IC USB OPT MOUSE SENSOR HS 8-DIP
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-5060

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

SCLK
Forcing the SDIO line to the Hi-Z state
There are times when the SDIO line from the ADNS-5060
should be in the Hi-Z state. For example, if the micropro-
cessor has completed a write to the ADNS-5060, the SDIO
line will go into a Hi-Z state because the SDIO pin was con-
figured as an input. However, if the last operation from the
microprocessor was a read, the ADNS-5060 will hold the
D0 state on SDIO until a falling edge of SCLK.
Figure 21. SDIO Hi-Z state and timing
Another method to put the SDIO line into the Hi-Z state,
while maintaining the ADNS-5060 at normal mode, is
to write any data to an invalid address such as 0x00 to
address 0x77. The SDIO line will go into the Hi-Z state after
the write operations.
Figure 22. Timing between two write commands
If the rising edge of the SCLK for the last data bit of the
second write command occurs before the 100 us required
Figure 23. Timing between write and read commands
19
SCLK
Timing
SDIO
PD
Activated
cycles
clock
PD
32
Address
Address
Write Operation
Write Operation
10ns, max
Hi-Z
Data
Data
Address
t
SWR
To place the SDIO pin into a Hi-Z state, activate the power-
down mode by writing to the configuration register. Then,
the power-down mode can stay activated, with the ADNS-
5060 in the shutdown state. Or the power down mode
can be deactivated, returning the ADNS-5060 to normal
operation. In both conditions, the SDIO line will go into
the Hi-Z state.
Required Timing between Read and Write Commands (tsxx)
There are minimum timing requirements between read
and write commands on the serial port.
t
delay, then the first write command may not complete
correctly.
SWW
Write Operation
≥100µs
≥100µs
Next Read Operation
Address
Data