PT12917 Specification

PT12917
6 Inputs, 3 Band EQ Car Audio Processor
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
DESCRIPTION
The PT12917 is a car audio processor with 6 input
sources selector and 3-band equalizer, which includes
a fully integrated high performance audio filters that
are built into a single chip to provide audio system
having the highest audio performance and reliability.
Digital control allows programming in a wide range of
filter characteristics.
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APPLICATION


Car audio system
FEATURES


2
Controlled by I C Bus Micro-processor
interface
Input gain from 0 to +15dB with 1dB/step
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
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4 stereo inputs for audio sources
1 Quasi-Differential input for external auxiliary
input.
1 Fully-Differential input for auxiliary input or
disc changer.
2 mono mixing inputs for GPS navigation
system and mobilephone.
2 channels electronic volume with soft step,
from +15 to -79dB with 1dB/step
Soft mute
1 mono output with soft step volume for
subwoofer, from +15 to -79dB with 1dB/step
3 band equalizer with gain, Q-factor and center
frequency programmable, bass and middle
band with soft step gain.
Frequency and gain programmable loudness :
0 to -15dB with 1dB/step and soft step
4 independent speaker outputs volume with
soft step: from +15 to -79dB with 1dB/step
28-pin SOP package
BLOCK DIAGRAM
MONO1
26
MONO2
25
SE4L
28
SE4R
27
FDL+
1
FDL-
2
Soft Step
Mixing Volume
Soft Step
Mixing Volume
Soft Step
Soft Step
Loudness
InGain
FDR+
3
FDR-
4
SE3L
5
SE3R
6
SE2L
7
SE2R
8
SE1L
9
SE1R
10
QDL
11
QDG
12
QDR
13
Soft
Mute
Soft Step
Volume
Soft Step
Middle
Treble
Mono Fader
Soft Step
Bass
Soft Step
Mono Fader
INPUT
MULTIPLEXER
Soft Step
Mono Fader
Soft Step
Mono Fader
L+R
DIGITAL
CONTROL
SUPPLY
24
15
14
VDD GND CREF
21
Mute
Soft Step
Mono Fader
MIX
20
OUTLF
MIX
17
OUTRF
19
OUTLR
18
OUTRR
16
OUTMO
I2C
BUS
22
23
SCL SDA
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian Dist., New Taipei City 23145, Taiwan
PT12917
APPLICATION CIRCUIT
1
SE4L
FDL+
28
2.2uF
2.2uF
2
FDL-
SE4R
27
2.2uF
2.2uF
3
FDR+
MONO1
26
2.2uF
2.2uF
4
FDR-
MONO2
25
2.2uF
2.2uF
5
SE3L
VDD
24
2.2uF
10uF
6
SE3R
SDA
23
7
SE2L
SCL
22
8
SE2R
MUTE
21
9
SE1L
OUTLF
20
100nF
2.2uF
PT12917
2.2uF
2.2uF
2.2uF
4.7uF
10
SE1R
OUTLR
19
2.2uF
4.7uF
11
QDL
OUTRR
18
2.2uF
4.7uF
12
QDG
OUTRF
17
2.2uF
4.7uF
13
QDR
OUTMO 16
2.2uF
4.7uF
14
CREF
GND
15
10uF
V1.1
2
June, 2015
PT12917
ORDER INFORMATION
Part Number
PT12917-S
Package Type
28 Pins, SOP, 300mil
Top Code
PT12917-S
PIN CONFIGURATION
FD L+
SE 4L
28
2
FD L-
SE 4R
27
3
FD R+
MONO1
26
4
FD R-
MONO2
25
5
SE 3L
VD D 24
6
SE 3R
SD A
23
7
SE 2L
SCL
22
8
SE 2R
MUTE
21
9
SE 1L
OUTLF
20
10 SE 1R
OUTLR
19
11 QDL
OUTRR
18
12 QDG
OUTRF
17
13 QDR
OUTMO
16
14 CREF
G ND
15
3
PT12917
V1.1
1
June, 2015
PT12917
PIN DESCRIPTION
V1.1
Pin Name
I/O
Description
Pin No.
FDL+
I
Fully-Differential Input left channel +
1
FDL-
I
Fully-Differential Input left channel -
2
FDR+
I
Fully-Differential Input right channel +
3
FDR-
I
Fully-Differential Input right channel -
4
SE3L
I
Single-ended input 3 left channel
5
SE3R
I
Single-ended input 3 right channel
6
SE2L
I
Single-ended input 2 left channel
7
SE2R
I
Single-ended input 2 right channel
8
SE1L
I
Single-ended input 1 left channel
9
SE1R
I
Single-ended input 1 right channel
10
QDL
I
Quasi-Differential input left channel
11
QDG
I
Quasi-Differential input common
12
QDR
I
Quasi-Differential input right channel
13
CREF
O
For internal reference bypass capacitor
14
GND
-
Ground
15
OUTMO
O
Mono output for subwoofer
16
OUTRF
O
Front right output
17
OUTRR
O
Rear right output
18
OUTLR
O
Rear left output
19
OUTLF
O
Front left output
20
MUTE
I
Soft mute input
21
SCL
I
I C bus clock
SDA
I/O
VDD
2
22
I C bus data
2
23
-
Supply voltage
24
MONO2
I
Mono mixing input 2
25
MONO1
I
Mono mixing input 1
26
SE4R
I
Single-ended input 4 right channel
27
SE4L
I
Single-ended input 4 left channel
28
4
June, 2015
PT12917
IMPORTANT NOTICE
Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements,
improvements, and other changes to its products and to discontinue any product without notice at any time.
PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No
circuit patent licenses are implied.
Princeton Technology Corp.
2F, 233-1, Baociao Road,
Sindian Dist., New Taipei City 23145, Taiwan
Tel: 886-2-66296288
Fax: 886-2-29174598
http://www.princeton.com.tw
V1.1
24
June, 2015