saa569x NXP Semiconductors, saa569x Datasheet - Page 34

• Manufacturer Part Number: saa569x
• Description: Enhanced Tv Microcontrollers With On-screen Display Osd
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Notes
1. This flag is set by software and reset by hardware.
2. This flag is set by hardware and must be reset by software.
3. Valid range TXT Mode 0 to 24.
4. Valid range TXT Mode 0 to 39.
5. Must be set to 55H to disable Watchdog timer when active.
2002 May 06
Watchdog timer (WDT)
WDV7 to WDV0
Watchdog Timer Key (WDTKEY)
WKEY7 to WKEY0
Wide Screen Signalling 1 (WSS1)
WSS<3:0> ERROR
WSS3 to WSS0
Wide Screen Signalling 2 (WSS2)
WSS<7:4> ERROR
WSS7 to WSS4
Wide Screen Signalling 3 (WSS3)
WSS<13:11> ERROR
WSS13 to WSS11
WSS<10:8> ERROR
WSS10 to WSS8
External RAM Pointer (XRAMP)
XRAMP7 to XRAMP0
Enhanced TV microcontrollers with
On-Screen Display (OSD)
BITS
(5)
Watchdog Timer period
Watchdog Timer key
error in WSS<3:0> (logic 1)
signalling bits to define aspect ratio (group 1)
error in WSS<7:4> (logic 1)
signalling bits to define enhanced services (group 2)
error in WSS<13:11> (logic 1)
signalling bits to define reserved elements (group 4)
error in WSS<10:8> (logic 1)
signalling bits to define subtitles (group 3)
upper address byte for MOVX RAM space in direct addressing; to use with one
of the R0 to R7 registers to provide the lower address byte
34
FUNCTION
SAA567x; SAA569x
Objective specification