saa5250 NXP Semiconductors, saa5250 Datasheet - Page 23

• Manufacturer Part Number: saa5250
• Description: Interface For Data Acquisition And Control For Multi-standard Teletext Systems
• Manufacturer: NXP Semiconductors

Philips Semiconductors
January 1987
handbook, full pagewidth
Interface for data acquisition and control
(for multi-standard teletext systems)
DCK
SD
handbook, halfpage
Fig.9 Without prefix acquisition chart.
5
6
Fig.10 SD and DCK input circuitry.
D = clamping diodes
CBI = clamping pulse, the pulse width
DECREMENT FORMAT COUNTER.
WRITE DATA BYTES INTO FIFO
is given by the R7 register
LOAD FORMAT COUNTER
D
D
WITH EXPLICIT FORMAT
INITIALIZE CIDAC
CODE DETECT
COUNTER = 0
FRAMING
FORMAT
CBI
23
1
0
MGH080
0
1
clock input to
data acquisition
circuit
data input to
data acquisition
circuit
MGH076
Product specification
SAA5250