saa5250 NXP Semiconductors, saa5250 Datasheet - Page 16

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

Philips Semiconductors
Table 15 Continuity index processing result
Table 16 Format processing result
Note
1. A/R = 0, if rejected
2. A/R = 1, if accepted
3. X = don’t care
DIDON mediun (see Fig.5)
Only data bytes are written into the FIFO memory. (In fast mode, information can be written into the FIFO memory only
after a page detection.)
DIDON short (see Fig.6)
In this mode, format and data bytes are written into the FIFO memory. (In fast mode, information can be written into the
FIFIFO memory only after a page detection.)
Table 17 Format processing result
NABTS (see Fig.7)
In this mode, the continuity index, packet structure and data bytes are written into the FIFO memory. (In fast mode,
information can be written into the FIFO memory only after a page detection.)
Table 18 Continuity index processing result
Table 19 Packet structure processing result
U.K. teletext (see Fig.8)
In this mode, the magazine and row address group (two bytes) and data bytes are written into the FIFO memory. (In fast
mode, information can be written into the FIFO memory only after a flag detection.)
January 1987
D7
A/R
D7
A/R
D7
A/R
D7
A/R
D7
A/R
Interface for data acquisition and control
(for multi-standard teletext systems)
D6
X
D6
X
D6
X
D6
X
D6
X
D5
X
D5
F5
D5
F5
D5
X
D5
X
D4
X
D4
F4
D4
F4
D4
X
D4
X
D3
CI3
D3
F3
D3
F3
D3
CI3
D3
PS3
16
D2
CI2
D2
F2
D2
F2
D2
CI2
D2
PS2
D1
CI1
D1
F1
D1
F1
D1
CI1
D1
PS1
D0
CI0
D0
F0
D0
F0
D0
CI0
D0
PS0
Product specification
SAA5250