EUA6412
Pin Configurations
Package Type
Pin Configurations(Top View)
TSSOP-24 with a Thermal
Pad exposure on the bottom
of the package
Pin Description
PIN
PIN
I/O
DESCRIPTION
BYPASS
GAIN0
GAIN1
GND
LHPIN
LIN
LLINEIN
LOUT+
LOUT-
PC-BEEP
11
2
3
1,12
13,24
6
10
5
4
9
14
I
I
Tap to voltage divider for internal mid-supply bias generator
Bit 0 of gain control
Bit 1 of gain control
Ground connection for circuitry. Connected to thermal pad.
I
I
I
O
O
I
HP/ LINE
PV
DD
RHPIN
RIN
RLINEIN
ROUT+
ROUT-
17
7,18
20
8
23
21
16
I
I
I
I
I
O
O
SHUTDOWN
SE/ BTL
V
DD
22
15
19
I
I
I
Left channel headphone input, selected when SE/ BTL is held high.
Common left input for fully differential input. AC ground for single-ended
inputs.
Left channel line input, selected when SE/ BTL is held low.
Left channel positive output in BTL mode and positive output in SE mode.
Left channel negative output in BTL mode and high-impedance in SE mode.
The input for PC Beep mode. PC-BEEP is enabled when a > 1-V (peak-to-peak)
square wave is input to PC-BEEP or PCB ENABLE is high.
HP/LINE is the input MUX control input. When the HP/LINE terminal is held
high, the headphone inputs (LHPIN or RHPIN [6, 20]) are active. When the
HP/LINE terminal is held low, the line BTL inputs (LLINEIN or RLINEIN [5,
23]) are active.
Power supply for output stage.
Right channel headphone input, selected when SE/ BTL is held high
Common right input for fully differential input. AC ground for single-ended
inputs.
Right channel line input, selected when SE/ BTL is held low.
Right channel positive output in
BTL
mode and positive output in SE mode.
Right channel negative output in
BTL
mode and high-impedance in SE mode.
When held low, this terminal place the entire device, except PC-BEEP detect
circuitry, in shutdown mode.
Input and output MUX control. When this terminal is held high, the LHPIN or
RHPIN and SE output is selected. When this terminal is held low, the LLINEIN
or RLINEIN and BTL output are selected.
Analog V
DD
input supply. This terminal needs to be isolated from PV
DD
to
achieve highest performance.
DS6412 Ver 1.0 Dec. 2006
3
EUTECH [ EUTECH MICROELECTRONICS INC ]
