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TMP92CZ26A
92CZ26A-478
3.17.1 Block diagram
It shows block diagram and connection to SD card in Figure 3.17.1.
Note1: SPCLK, SPCS , SPDO and SPDI pins are set to input port (Port PR3, PR2, PR1, PR0) by reset.
These signals are needed pull-up resister to fix voltage level, could you adjust resistance value for your final
set.
Note2: Please use general input port or interrupt signal for WP (Write Protect) and CD (Card Detect).
Figure 3.17.1 Block diagram and Connection example
f
SYS
Baud rate
Generator
SPIMD/CT
16bit
SPCLK
SPCS
SPIIE
16bit
SPICR
SPIC (SPI Controller)
SD Card
SCLK
CS
Port
WP (Write Protect)
INTn
CD (Card Detect)
100KΩ
100KΩ
SPIST
16bit
INTSPI
16bit
SPITD
Transmitt,Receive ontroller
SPDO
16bit
SPIRD
SPDI
DI
DO
100KΩ
100KΩ
Internal data bus
TX FIFO
8×32
RX FIFO
8×32
16bit
RX shift register TX shift register