TMP92CF30
2009-06-12
92CF30-452
3.17.1
Block Diagram
Figure 3.17.1 shows a block diagram of the SPIC and its connections with a SD card.
Note 1: The SPCLK, SPCS , SPDO and SPDI pins are configured as input ports (Ports PR3, PR2, PR1 and PR0)
upon reset.
Thus, these pins require pull-up resisters to fix their voltage levels. The pull-up resistor values should be
adjusted under real-world conditions.
Note 2: Any one of general inputs and interrupt should be used as the WP (Write Protect) and CD (Card Detect)
inputs, respectively.
Figure 3.17.1 Block Diagram and Connection Example
f
SYS
Baud Rate
Generator
SPIMD/CT
16 bits
SPCLK
SPCS
SPIIE
16 bits
SPICR
SPIC (SPI Controller)
SD Card
SCLK
CS
Port
WP (Write Protect)
INTn
CD (Card Detect)
100k
Ω
100k
Ω
SPIST
16 bits
INTSPI
16 bits
SPITD
T
ransmitt/Receive Controller
SPDO
16 bits
SPIRD
SPDI
DI
DO
100k
Ω
100k
Ω
Internal Dat
a
B
u
s
TXFIFO
8
×
32
RXFIFO
8
×
32
16 bits
RX
shi
ft re
g
iste
r
T
X
shi
ft
re
g
iste
r
Summary of Contents for TLCS-900/H1 Series
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