Marantz CDR631 Service Manual page 21

Addressable Dual Audio Taper Potentionmeter :
DS1807
Block diagram
WO
HO
LO
SCL
Control Logic
SDA
Address Logic
Figure 7-12
Pin description
PIN
L0, L1 Low End of Resistor
H0, H1 High End of Resistor
W0,W1 Wiper Terminal of Resistor
VCC 3V/5V Power Supply Input
A0..A2 Chip Select Inputs
SDA Serial Data I/O
SCL Serial Clock Input
GND Digital Ground
AGND Analog Ground
NC No connection
Figure 7-14
W1
H1
L1
A0
A1
A2
DESCIPTION
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