SD-EX200 (serv.man18). Function table of IC - Sharp Audio Service Manual (repair manual). Page 5

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6, 7

DIF1, DIF0

Input

Digital Interface Format
The required relationship between the Left/Right clock, serial clock and serial data is defined.

8

DEM0

Input

De-emphasis Control
Implementation of  the standard 15 

µ

s/50 

µ

s digital de-enphasis filter response, required

reconfiguration of the digital filter to maintain the proper filter response for 32, 44.1 or 48 kHz
sample rates.
When using Internal Serial Clock Mode, as described above, Pin 3 is available for de-emphasis
control, DEM1, and all de-enphasis filters are available.
When using External Serial Clock Mode, as described above, Pin 3 is not available for
de-emphasis use and only the 44.1 kHz de-emphasis filter is available.
Note: De-emphasis is not available in High-Rate Mode.

9

FILT+

Output

Positive Voltage Reference
Positive reference for internal sampling circuits.
An external capacitor is required from FILT+ to analog ground.
The recommended value will typically provide 60 dB of PSRR at 1 kHz and 40 dB of PSRR at 60 kHz.
FILT+ is not intended to supply external circuit. FILT+ has a typical source impedance of 250
kohms and any current drawn from this pin will alter device performance.

10

VQ

Output

Quiescent Voltage
Filter connection for internal quiescent reference voltage, typically 50 % of VA.
Capacitors must be connected from VQ to analog ground.
VQ is not intended to supply external current.
VQ has a typical source impedance of 250 kohms and any current drawn from this pin will
alter device performance.

11

REF_GND

Input

Reference Ground
Ground reference for the internal sampling circuits. Must be connected to analog ground.

12

AOUTR

Output

Analog Output
The full scale analog output level is specified in the Analog Characteristics specifications table.

13

AGND

Input

Ground
Ground Reference.

14

VA

Input

Analog Power
Analog power supply. Typically 3 to 5 VDC.

15

AOUTL

Output

Analog Output
The full scale analog output level is specified in the Analog Characteristics specifications table.

16*

MUTEC

Output

Mute Control
The Mute Control pin goes high during power-up initialization, reset, muting, master clock to
left/right clock frequency ratio is incorrect or power-down this pin is intended to be used as a
control for an external mute circuit to prevent the clicks and pops that can occur in any single
supply system. Use of Mute Control is not mandatory but recommended for designs requiring
the absolute minimum in extraneous clicks and pops.

0

0

I

2

S, up to 24-bit data

0

0

1

Left Justified, 24-bit Data

1

1

0

Right Justified, 24-bit Data

2

1

1

Right Justified, 16-bit Data

3

0

Disabled

1

44.1 kHz

0

Disabled

1

44.1 kHz

0

48 kHz

1

32 kHz

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.