Marantz SR110/F1S Service Manual page 21

PIN DESCRIPTIONS
Symbol
Pin name
Reset input
RESET
Chip select
CS
input
Shift clock input
SCK
Serial data input
SDAT A
XIN ,
Clock input
Clock output
XOUT
DIG00~
Digit output
DIG15
SEG00~
Segment output
SEG39
Universal port
P1, P0
P1 : bidirectional
P0 : output
Vcc1
Vcc2
Vss
Vp
When "L", M66005 is initialized.
When "L", communication with the MCU is possible.
When "H", any instruction from the MCU is neglected.
Serial input data is taken and shifted by the positive edge of SCK.
When use as a CR oscillator, connect external resistor and
capacitor.
When use an external clock, input external clock to XIN, and
XOUT must be opened.
Connect to digit (grid) pins of VFD.
Connect to segment (anode) pins of VFD. Pins from SEG00 to
SEG39 correspond to segment pins of VFD as shown in the table
below. SEG36~SEG39 pins are common to DIG12~DIG15 pins.
So, when use SEG36~SEG39, the number of digit to be used is
decreased.
Generally, use this port as the static output port.
This port also operates as the timing IN/OUT port to control
another M66005.
Positive power supply for internal logic.
Positive power supply for DIG and SEG outputs.
GND (0V)
Negative power supply to pull down.
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