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RXD-F3/F4/F41/F42
CIRCUIT DESCRIPTION
3. Expander p-com : BU4094BCF (X09 : IC11) (X28 : IC 6,7) , BU4094BC (X32 : IC6)
3.1 Pin connection
3.2 Pin connection
Pin Name
Pin Function
STROBE
STROBE INPUT
DATA
DATA INPUT
CLOCK
CLOCK INPUT
Qi
PARALLEL OUTPUT
Q2
PARALLEL OUTPUT
Q3
PARALLEL OUTPUT
Q4
C
PARALLEL OUTPUT
Vss
SERIAL OUTPUT
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SERIAL OUTPUT
PARALLEL OUTPUT
PARALLEL OUTPUT
PARALLEL OUTPUT
_ | PARALLEL OUTPUT
OUTPUT ENABLE
| ! | ENABLE INPUT
VDD
VDD
_ SERIAL OUTPUTS
STROBE
Z=High Impedance
X=Don' t Care
3.4 Timing chart
20
CLOCK
DATA
STROBE
OUTPUT
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