Harman Kardon AVR520 Service Manual page 85

AVR520
Pin Description
Symbol
PA0/AN0
I/O/Analog input
to
PA7/AN7
PB0/CINT I/O/Input
PB1/CS0 I/O/Input
PB2/SCK0 I/O/I/O
PB3/SI0 I/O/Input
PB4/SO0 I/O/Output
I/O/I/O
PB5/SCK1
PB6/SI1 I/O/Input
PB7/SO1 Output/Output
PC0/KR0
to I/O/Input
PC7/KR7
PE0/INT0/EC0 Input/Input/Input
Input/Input/Input
PE1/INT1/EC1
PE2/INT2 Input/Input
PE3/INT3 Input/Input
Input/Input
PE4/RMC
PE5 Input
PE6 Output
PE7/TO Output/Output
PG0 to PG3 I/O
PF0/S8
to Output/Output
PF7/S15
S16 to S20 Output
T8/S28
to Output/Output
T15/S21
T0 to T7 Output
PD0/S0
to Output/Output
PD7/S7
I/O
(Port A)
8-bit port; single bit
addressable.
(8 pins)
(Port B)
Single bit addressable from
amongst lower 7 bits;
highest bit (PB7)
dedicated to output.
(8 pins)
(Port C)
8-bit port; single bit
addressable. Can provide
12mA sink current.
(8 pins)
(Port E)
8-bit port with lower 6 bits
dedicated to input and
upper 2 bits dedicated to
output.
(8 pins)
(Port G)
4-bit input/output port; single bit addressable.
(4 pins)
(Port F)
8-bit dedicated output port.
(8 pins)
Segment signal output for FDP.
Dual purpose output for FDP timing and segment signals.
Timing signal output for FDP.
(Port D)
8-bit dedicated output port.
(8 pins)
Description
Analog input to A/D converter.
(8 pins)
External capture input for 16-bit timer/counter.
Chip select input for serial interface (CH0).
Serial clock (CH0) input/output.
Serial data (CH0) input.
Serial data (CH0) output.
Serial clock (CH1) input/output.
Serial data (CH1) input.
Serial data (CH1) output.
Key return input for FDP segment signal
which performs key scanning.
Input for external
interrupt requests.
(4 pins)
Input for remote control receiver circuit.
Output pin for 16-bit timer/counter
rectangular waveform.
Segment signal output for FDP.
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harman/kardon
CXP82532/82540
External event input
to timer/counter.
(2 pins)
Segment signal
output for FDP.