saa7803 NXP Semiconductors, saa7803 Datasheet - Page 14
saa7803
Manufacturer Part Number
saa7803
Description
Saa7803 One Chip Cd Audio Device
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7803.pdf
(74 pages)
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Philips Semiconductors
9397 750 13695
Objective data sheet
Fig 8. Clocking top level
ARM/AHB/VPB clock
1.536 kHz LCD clock
6.6.1 Features
6.6 Channel decoder
ARM
The channel decoder in the SAA7803 is derived from the design used in the SAA7817
DVD decoder IC. The design has been optimized for CD decode functionality (i.e.
EFMPlus demodulation has been removed) and has the following features:
•
•
•
•
•
•
•
1-channel interface to the on-chip 6-bit 67 MHz AD converter
Signal conditioning logic with high-pass filter, DC offset cancellation (Analog Offset
Cancellation; AOC) and AGC logic
HF defect detection circuitry with automatic hold of AGC, AOC, High-Pass Filter
(HPF), PLL and slicer on defect detection
Digital equalizer, noise filter, PLL and slicer
RL2PB mechanism
EFM demodulator with sync interpolation
CD-TEXT and subcode Q-channel extraction blocks with software-interface via
registers
GENERATOR
RAM
LCD
CLOCK
GPIO
ROM
OSCIN
67 MHz baseline clock
ANALOG CLOCK
94
GENERATOR
9.6768 MHz I
Rev. 01 — 19 April 2005
CONTROLLER
I
2
SMIU
INTERRUPT
S-bus bit clock
OSCOUT
2
C-bus clock
93
INTERFACE
AHB
VPB
AHB/
VPB
GENERATOR
UART
CLOCK
4.2336 MHz audio DAC clock
PDSIC
CD-SLIM
I
2
C-BUS
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
PDSIC clock
8.4672 MHz
One chip CD audio device
HANDLER
I
2
AHB and VPB
S-BUS
SAA7803
operate at
frequency
ARM
001aab752
AUDIO
DAC
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