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GPBA02A Datasheet(PDF) 12 Page - Generalplus Technology Inc.

No. de pieza GPBA02A
Descripción Electrónicos  I/O Extender
PDF  21 Pages
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Fabricante Electrónico  GENERALPLUS [Generalplus Technology Inc.]
Página de inicio  http://www.generalplus.com
Logo GENERALPLUS - Generalplus Technology Inc.

GPBA02A Datasheet(HTML) 12 Page - Generalplus Technology Inc.

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GPBA02A
© Generalplus Technology Inc.
Proprietary & Confidential
12
JAN. 06, 2011
Version: 1.6
Speed up XOR register timing:
The command byte: C7=1; C6=device option value; C5-4=11;
C3-0=register address. The speed up XOR data byte: D7-0 is
the value that will be XOR with the corresponding 0xH register’s
value and then be written to the corresponding 0xH register. In
speed up XOR register cycles, the output pin (MISO) remains in
high impedance state.
Read register or read IO port timing:
The command byte: C7=0, C6=device option value, C5-4=00,
C3-0=register address. The read data byte: D7-0 is the value
that will be read from the corresponding register or corresponding
IO ports. In read register or IO port cycles, the read data byte is
transmitted via output pin (MISO) during the last 8 SCK clock
cycles. After the 16th SCK clock, MISO remains the value of B0
until CSB is high.
5.3.2. SPI Synchronous Data Timing Specifications
CSB
SCK
MOSI
MISO
valid
data
HI-Z
tCSS
......
......
......
valid
data
HI-Z
tWH
tWL
tCSH
tCS
tSU tH
tV
tHO
tDIS



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