SAA5290ZP Philips Semiconductors, SAA5290ZP Datasheet - Page 20

• Manufacturer Part Number: SAA5290ZP
• Description: One page Economy Teletext/TV microcontroller
• Manufacturer: Philips Semiconductors

Philips Semiconductors
February 1995
S1SCS - Serial I
SDO
SCO
CLH
STR
ENS
TDACH - 14-bit PWM MSB register
PWE
TD8 to TD13
TDACL - 14-bit PWM LSB register
TD0 to TD7
TXT0 - Teletext register 0 (WRITE only)
X24 POSITION
AUTO FRAME
DISABLE HDR ROLL Do not write rolling headers and time into memory (logic 1).
STATUS ROW ONLY Display only memory row (logic 1).
DISABLE FRAME
TXT1 - Teletext register 1 (WRITE only)
8-BIT
ACQ OFF
X26
FULL FIELD
FIELD POLARITY
H POLARITY
V POLARITY
TXT2 - Teletext register 2 (WRITE only)
SC0 to SC2
TXT3 - Teletext register 3 (WRITE only)
PRD0 to PRD4
TXT4 - Teletext register 4 (WRITE only)
B MESH ENABLE
C MESH ENABLE
TRANS ENABLE
SHADOW ENABLE
EAST/WEST
One page Economy Teletext/TV
microcontroller
REGISTER
2
C-bus control (WRITE)
Serial data output at SDA.
Serial clock output at SCL.
Clock LOW-to-HIGH transition.
Clock stretching enable (logic 1).
Enable serial I/O (logic 1).
Activate this 14-bit PWM and take over port pin (logic 1).
6 LSBs of this value to be output by the 14-bit PWM.
8 LSBs of this value to be output by the 14-bit PWM.
Store packet 24 in extension packet memory (logic 0) or page memory (logic 1).
Frame output always LOW (logic 1).
Data in packets 0 to 24 written into memory without error checking (logic 1).
Prevent teletext acquisition section writing to memory (logic 1).
Disable automatic processing of packet 26 data (logic 1).
Accept teletext on TV lines 2 to 22 only (logic 0) or on any line (logic 1).
VSYNC in first half of the line (logic 0) or second half of the line (logic 1) at start of even field.
HSYNC input positive-going (logic 0) or negative-going (logic 1).
VSYNC input positive-going (logic 0) or negative-going (logic 1).
Start column at which page request data written into TXT3 SFR is placed.
Page request data.
Enable meshing of area with black background (logic 1).
Enable meshing of area with other background colours (logic 1).
Black background colour is transparent i.e. video is displayed (logic 1).
Enable south-east shadowing (logic 1).
Western European languages displayed (logic 0) or Eastern European languages displayed
(logic 1).
Frame output switched off automatically if any video displayed (logic 1).
20
FUNCTION
Preliminary specification
SAA5290