ADNS-6000 Avago Technologies US Inc., ADNS-6000 Datasheet - Page 17

• Manufacturer Part Number: ADNS-6000
• Description: Laser Mouse Sensor
• Manufacturer: Avago Technologies US Inc.

Specifications of ADNS-6000

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

Required timing between Read and Write Commands
(tsxx)
There are minimum timing requirements between read
and write commands on the serial port.
Figure 19. MISO Delay and Hold Time
If the rising edge of the SCLK for the last data bit of the
second write command occurs before the 50 microsecond
required delay, then the first write command may not
complete correctly.
If the rising edge of SCLK for the last address bit of
the read command occurs before the 50 microsecond
required delay, the write command may not complete
correctly.
The falling edge of SCLK for the first address bit of
either the read or write command must be at least 250
ns after the last SCLK rising edge of the last data bit of
the previous read operation. In addition, during a read
operation SCLK should be delayed after the last address
data bit to ensure that the ADNS-6000 has time to prepare
the requested data.
Figure 20. Timing between two write commands
SCLK
Figure 21. Timing between write and read commands
Figure 22. Timing between read and either write or subsequent read commands
17
t
SCLK
SCLK
DLY-MISO
SCLK
MISO
Address
Address
Address
D
0
Write Operation
Write Operation
t
HOLD-MISO
Data
≥ t
Data
t
SRAD
SRAD MOT
75 µs for register 0x02
50 µs for non-motion read
Read Operation
Address
Burst Mode Operation
Burst mode is a special serial port operation mode which
may be used to reduce the serial transaction time for
three predefined operations: motion read and PROM
download and frame capture. The speed improvement is
achieved by continuous data clocking to or from multiple
registers without the need to specify the register address,
and by not requiring the normal delay period between
data bytes.
≥ t
≥ t
SWR
SWW
Write Operation
50 µ s
50 µ s
Address
Data
Next Read
Operation
Data
t
SRW
& t
SRR
>250 ns
Write Operation
Next Read or
Address