參數(shù)資料
型號(hào)： ADNB-3532
廠商： Avago Technologies Ltd.
英文描述： Low Power LED Integrated Slim Mouse Sensor
中文描述： 小功率LED集成超薄鼠標(biāo)傳感器
文件頁(yè)數(shù)： 6/27頁(yè)
文件大?。?/td> 1994K
代理商： ADNB-3532
14
During a read operation SCLK should be delayed at least
tSRAD after the last address data bit to ensure that the
ADNS-3530 has time to prepare the requested data. The
falling edge of SCLK for the first address bit of either the
read or write command must be at least tSRR or tSRW
after the last SCLK rising edge of the last data bit of the
previous read operation.
Burst Mode Operation
Burst mode is a special serial port operation mode that
may be used to reduce the serial transaction time for
a motion read. The speed improvement is achieved
by continuous data clocking from multiple registers
without the need to specify the register address, and
by not requiring the normal delay period between data
bytes.
Burst mode is activated by reading the Motion_Burst
register. The ADNS-3530 will respond with the contents
of the Motion, Delta_Y, Delta_X, SQUAL, Shutter_Upper,
Shutter_Lower and Maximum_Pixel registers in that
order. The burst transaction can be terminated after the
first three bytes of the sequence are read by bringing
the NCS pin high. After sending the register address, the
microcontroller must wait tSRAD and then begin reading
data. All data bits can be read with no delay between
bytes by driving SCLK at the normal rate. The data is
latched into the output buffer after the last address bit
is received. After the burst transmission is complete, the
microcontroller must raise the NCS line for at least tBEXIT
to terminate burst mode. The serial port is not available
for use until it is reset with NCS, even for a second burst
transmission.
Figure 18. Motion burst timing
Notes on Power-Up
The ADNS-3530 does not perform an internal power
up self-reset; the POWER_UP_RESET register must be
written every time power is applied. The appropriate
sequence is as follows:
1. Apply power
2. Drive NCS high, then low to reset the SPI port
3. Write 0x5a to register 0x3a
4. Read from registers 0x02, 0x03 and 0x04 (or read
these same three bytes from burst motion register
0x42) one time regardless the state of the motion
pin.
During power-up there will be a period of time after the
power supply is high but before any clocks are available.
The table below shows the state of the various pins
during power-up and reset.
State of Signal Pins After VDD is Valid
Pin
On Power-Up
NCS High Before Reset
NCS Low Before Reset
After Reset
NCS
Functional
High
Low
Functional
MISO
Undefined
Functional
Depends on NCS
SCLK
Ignored
Functional
Depends on NCS
MOSI
Ignored
Functional
Depends on NCS
XY_LED
Undefined
Functional
MOTION
Undefined
Functional
SHTDWN
Must Be Low
Functional
MOTION_BURST REGISTER ADDRESS
READ FIRST BYTE
FIRST READ OPERATION
READ SECOND BYTE
READ THIRD BYTE
SCLK
tSRAD
相關(guān)PDF資料
PDF描述
ADNB-3552 Low Power LED Integrated Slim Mouse Sensor
ADNK-3533-TN24 Optical Mouse Designer’s Kit
ADNS-3530 Low Power LED Integrated Slim Mouse Sensor
ADNS-3550 Low Power LED Integrated Slim Mouse Sensor
ADP-304F-11-000-02 0 MHz - 18000 MHz RF/MICROWAVE FIXED ATTENUATOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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