SAA7205 Philips Semiconductors, SAA7205 Datasheet - Page 35

• Manufacturer Part Number: SAA7205
• Description: MPEG-2 systems demultiplexer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1997 Jan 21
handbook, full pagewidth
MPEG-2 systems demultiplexer
(27 MHz)
CCLKI
transport
stream
DIVIDE-BY-3
Fig.20 PCR and PTS/DTS processing implementation.
9 MHz
when new PCR
load A or B
arrives
PCR EXTENSION
PTS REGISTERS
on byte clock (9 MHz)
PTS REGISTERS
COU NTER
back-end part runs
0 to 299 (step 3)
PTS-BASE
9
9 bits
COUNTER
PCR REGISTERS
90 kHz
35
STC COUNTER-B
when new PCR
load A or B
arrives
COUNTER
PCR BASE
COUNTER
0 to 2
24
24 LSBs
24
of 33
1
emulated_PTS
incoming_PTS
microcontroller
interface
Preliminary specification
STC_samples
PCR received
interrupt upon
zero transition
PCR_ext
PCR_base
MGG782
SAA7205H