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AS3956 bảng dữ liệu(PDF) 60 Page - ams AG

tên linh kiện AS3956
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nhà sản xuất  AMSCO [ams AG]
Trang chủ  http://www.ams.com
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AS3956 bảng dữ liệu(HTML) 60 Page - ams AG

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[v1-11] 2018-Nov-14
AS3956 − Detailed Description
MISO output is usually in tristate and it is only driven when
output data is available. MOSI and MISO can then be externally
shorted to create a bidirectional signal. When MISO output is
in tristate, it is possible to switch on a pull down resistor RPD
by activating option bit miso_pd1 in IO Configuration Register.
Figure 56:
IO Signals to Controller
Writing Data to Addressable Registers
(Register Write Mode)
Following figures show waveforms of writing a single byte and
writing multiple bytes with auto-incrementing address. After
the SPI operation mode bits, the address of starting register to
be written is provided. Then one or more data bytes are
transferred from the SPI, always MSB first. The data byte is
written in register on falling edge of its last clock. In case the
communication is terminated by putting /SS high before a
packet of 8 bits composing one byte is sent, writing of this
register is not performed. In case the register on the defined
address does not exist or it is a read-only register, no write is
performed.
MOSI
MISO
MISO
MOSI
PC
AS3956
MOSI
MISO
I/O
PC
AS3956
Separate SPI Input and Output Signals to Controller
Bidirectional Data IO Signal to Controller



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