Audio Signal Flow - Philips JL2.1E Service Manual

Circuit Descriptions, Abbreviation List, and IC Data Sheets
JL2.1E (Jaguar 2nd Spin)

Audio Signal Flow

Analog tuner
+ splitter
AV1/AV2/AV2
CVBS Bolt-on
CVBS2/Yin + Cin
SIDE I/O
Analog
tuner
HDMI
HDMI #1
The AVIP together with the MPIF device is used to perform the
input decoding of a single stream of analog audio and video
broadcast signals. In addition, the AVIP is used for decoding
and presentation of audio output streams. The main data
connection between MPIF and AVIP is done via an I
The AVIP converts the incoming video data to ITU-656 format
for communication to the VIPER IC.
The audio data is transferred between the AVIP and VIPER
2
using I S.
The AVIP IC is controlled by the VIPER via the I
The key component in the system, the VIPER, performs almost
all key features, like video quality enhancement, motion
compensation, picture-in-picture processing, and others. It is a
completely digital IC with a TriMedia DSP (Digital Signal
Processor) core and a MIPS microcontroller core. The DSP
and some additional cores are used to do the video feature
processing and some auxiliary sound feature processing. The
MIPS microcontroller core is used for all internal and external
controlling tasks including a system wide I
Connected to the VIPER (via the tunnel bus of the PNX2015)
is the SPIDER IC. This video co-processor is responsible for
extra picture processing like temporal noise reduction, de-
interlacing for HD signals, scaling, and PixelPlus 2 processing.
The VIPER provides a primary digital (YUV or RGB) output to
the LVDS transmitter. For models with the AmbiLight feature,
an EPLD is connected between VIPER output and LVDS
Transmitter input. This EPLD (or MOP) is used for the
AmbiLight processing and some picture enhancements.
main delayed
SIF
tuner not delayed
Line 1
I2D1
Line 2
MPIF
Analog
I2D2
Line 3
SAW
Main
Line 4
I2D3
Front main delayed
Center
tuner not delayed
Line 1
Line 2
Line 3
Line 4
Front
v
Center
v
Center
I2D1
Front
MPIF
Line 4
I2D2
Line 3 Sec
I2D3
Line 2
Line 1
Analog
SAW SIF
Tuner Out
(AV1) SCART 1
to line 4
to Line1
L R
Main Delayed
L
(AV3) SCART 3
DVI-I
R
CL Out
to Line3
Hirate
Figure 9-2 Audio Block Diagram
2
D bus.
2
C bus.
2
C bus.
JL2.1E AA
to DV1 Viper
DAC
DAC DAC DAC DAC DAC
Stby µP
DAC DAC DAC
DAC DAC DAC
DV1
I2S SurrL&R
AVIP
I2S CenterSubWoofer
I2S Left Right
I2S Main Dow n Mix (not delayed)
Audio
Delay
I2S SurrL&R
I2S CenterSubWoofer
I2S Main Left Right
I2S Main Dow n Mix
PNX
I2S Sub Dow n Mix
I2S Sub Down Mix (not delayed)
DV3
AVIP
MonOut
TSOut
Monitor Out
(AV2) SCART 2
to Center
to Line2
(input for Euro1080i)
EXT4
SPDIF
SPDIF Center
in in in
CEC (HW provision only)
9.1.2 Features
Table 9-1 Main chassis features
Feature 32"
AmbiLight Stereo
Display 1366x768
USB 2 x USB2.0
Clear LCD Yes
Ethernet No
Card reader Yes
MPEG playback No
SPIDER Yes
MOP (EPLD) Yes
PixelPlus 2 HD
The main features for this chassis are (see also table):
• Fit for both analog and digital signal processing, this by
converting analog signals into digital transport streams and
allowing seamless zapping between all possible signal
sources. This makes the chassis applicable for e.g.
receiving ATSC in an integrated product form.
• AmbiLight: To be able to control lamps at the rear of the TV
with respect to the measured ambient light level from the
light sensor or the picture content, a control output from
AutoTV has been foreseen.
• The internal digital processing allows new "Multi-Media"
applications such as Content Browser, Memory Card Slot,
Local Area Network support and all kinds of streaming
applications.
• The chassis can be upgraded in the future with internal
functionality such as Personal Video Recording, DVD/RW,
MPEG playback.
9. EN 201
Flash
XIO_select0
L
R
SW out
XIO/PCU bus
Ether
LAN
net
Side I/O
Wireless
Ethernet
USB
2.0
Portable
VIPER
memory
(free USB1.1)
DDR
DENC
OUT
SPDIF SPDIF
1 2
SPDIF main
delay ed
monitor out
SPDIF
out
F_15710_178.eps
37" 42"
Stereo Stereo
1920x1080 1920x1080
2 x USB2.0 2 x USB2.0
No No
No Yes
Yes Yes
No Yes
Yes Yes
Yes Yes
2 HD 2 HD
260905