Table of Contents
Advertisement
EN 42
7.
Q543.1E LA
7.6
Video and Audio Processing - PNX8543
The PNX8543 is the main audio and video processor (or
System-on-Chip) for this platform. It is a member of the
PNX85xx SoC family (described in earlier chassis) with the
addition of the MPEG4 functionality; the separate STi710x
MPEG4 decoder is no longer implemented in this platform.
TS in from
channel decoder
TS out/in for
PCMCIA
DV-ITU-656
CVBS, Y/C,
RGB
Low-IF
SSIF, LR
Dual SPDIF
2
I
S
Dual HDMI
2009-Nov-20
Circuit Descriptions
PNX8543x
MPEG
SYSTEM
CI/CA
PROCESSOR
DV INPUT
VIDEO
3D COMB
DECODER
DIGITAL IF
MPEG/H.264
VIDEO
DECODER
AUDIO DEMOD
AND DECODE
AUDIO IN
HDMI
RECEIVER
SYSTEM
300 MHz
CONTROLLER
MIPS32 4KEc
(8051)
CPU
2
I
C
GPIO
IR
ADC
x
2
2
Figure 7-9 PNX8543 functional diagram
The PNX8543 handles the digital and analogue audio- and
video decoding and processing. The processor is a MIPS32
general purpose CPU and a 8051-based TV controller for
power management and user event handling.
•
For a functional diagram of the PNX8543, refer
to
Figure
7-9.
MEMORY
CONTROLLER
PRIMARY
VIDEO
OUTPUT
AV-PIP
SUB-PICTURE
SECONDARY
VIDEO
OUTPUT
SCALER,
DE-INTERLACE
AND NOISE
REDUCTION
AUDIO DSP
300 MHz
AV-DSP
DRAWING
ENGINE
DMA BLOCK
2
SPI
UART
I
C
GPIO Flash
x
1
0
LVDS for
flat panel display
LVDS
(single or dual
channel)
VIDEO
analog CVBS
ENCODER
AUDIO DACS
analog audio
2
I
S
AUDIO OUT
SPDIF
USB 2.0 CA
PCI 2.2
18440_202_090226.eps
090819
Hide quick links:
Advertisement
Table of Contents
