Marantz PM553 - Page 8

Terminal Connections Terminal Function
Function Description
Pins for loudness
When loudness data is input, these pins
becomes —-20 dB dampened pins.
Loudness control is possible through the
connection of high and low range boosting
circuits to these pins.
10 dB step attenuator output.
The signal applied to IN is attenuated in 8
10 dB steps from 0 to 70 dB.
10 dB attenuator input.
AC ground pin.
Pin No. Name
vss mt VDD
L-LOUDNESS | M2 R—LOUDNESS | 2,3 L-LOUDNESS 1, 2
18,19 | R-LOUDNESS 1, 2
L-LOUDNESS2 [3 R— LOUDNESS 2
L-ouT | 4 R- OUT I
L-iN | MS R-IN |
A-GND M6 A-GND tl z
4,17 L-OUT,
L-IN 2 7 R~IN 2 R-OUT
v-ouT 2 fs R-OUT 2
GND 9 ST 5,16 L-IN4
CK
flo
DATA
R-INy
6,15 A-GND
7,14 L-IN2
L-INg
11 DATA
10 ‘ CK
‘ : X
12 ST
2 dB attenuator pin.
2 dB attenuator output.
The signal applied to IN is attenuated in 5
2. dB steps from O to 8 dB.
Data input for amount of attenuation
and channel selection.
Input by CK signal, configurated in 20
bits.
“Clock input.
Clock input for fetching data from DATA |
pin.
Strobe input. .
The data for the amount of attenuation
and channel selection fetched from the
DATA and CK pins is latched when this
pin is “high”.
The previous data remains effective when
a high level is not applied to this pin.
Vop Pin for (+) voltage.
| 9 | GND Ground pin.
1 Vss Pin for (—) voltage.
=nare |
»
‘
Maximum Ratings (Ta = 25°C)
Item Ratings Unit |
Supply voltage Vss—0.3 ~ Vsgs+36 Vv
= ow
MSC