Harman Kardon AVR 3550 Service Manual page 19

A/D CONVERTER IC PIN FUNCTION (AK5380VT) : IC77
No. Pin Name
1 AINR
2 AINL
3 NC
4 VCOM
5 AGND
6 VA
7 VD
8 DGND
9 SDTO
10 LRCK
11 MCLK
SCLK
12
13 PDN
14 DIF
15 TTL
16 TST
Note: All input pins except pull-down pins should not be left floating.
PIN/FUNCTION
I/O
I Rch Analog Input Pin
I Lch Analog Input Pin
- NC Pin
No internal bonding.
O Common Voltage Output Pin
Normally connected to AGND with a 0.1µF ceramic capacitor in parallel with an
electrolytic capacitor less than 2.2µF.
- Analog Ground Pin, 0V
-
Analog Power Supply Pin, +4.5∼+5.5V
-
Digital Power Supply Pin, +2.7∼+5.5V(fs=48kHz), +4.5∼+5.5V(fs=96kHz)
- Digital Ground Pin, 0V
O Serial Data Output Pin
Data bits are presented MSB first, in 2's complement format.
This pin is "L" in the power-down mode.
I Left/Right Channel Select Pin
The fs clock is input to this pin.
I Master Clock Input Pin
I Serial Data Input Pin
Output data is clocked out on the falling edge of SCLK.
I Power-Down Pin
When "L", the circuit is in power-down mode.
The AK5380 should always be reset upon power-up.
I Serial Interface Format Pin
"L": MSB justified, "H": I
I Digital Input Level Select Pin
"L": CMOS level (VD=2.7∼5.5V), "H": TTL level (VD=4.5∼5.5V)
I Test Pin (Internal pull-down pin)
This pin should be left open.
Description
2
S