參數(shù)資料
型號(hào)： SAA55XX
廠商： NXP Semiconductors N.V.
英文描述： TV microcontrollers with Closed Captioning (CC) and On-Screen Display (OSD)
中文描述： 與隱藏字幕（CC）和屏幕顯示（OSD電視微控制器）
文件頁(yè)數(shù)： 26/84頁(yè)
文件大?。?/td> 352K
代理商： SAA55XX
2000 Feb 23
26
Philips Semiconductors
Preliminary specification
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
SAA55xx
Notes
1.
2.
3.
4.
5.
This flag is set by software and reset by hardware.
Valid range TXT mode 0 to 24.
Valid range TXT mode 0 to 39.
Only valid when VIDEO SIGNAL QUALITY is set.
Must be set to 55H to disable Watchdog Timer when active.
CC ON
I
2
C PORT 0
CC/TXT
closed caption acquisition on (logic 1)
enable I
2
C-bus Port 0 selection (P1.7/SDA0 and P1.6/SCL0) (logic 1)
display configured for CC mode (logic 1)
Text Register 22 (TXT22)
GPF7 to GPF5
GPF4
GPF3
general purpose register, bits defined by mask programmable bits
reserved
PWM0, PWM1, PWM2 and PWM3 output on Port 2.1 to Port 2.4 respectively
(logic 1)
enable closed caption acquisition (logic 1)
reserved
GPF2
GPF1 and GPF0
Watchdog Timer (WDT)
WDV7 to WDV0
Watchdog Timer period
Watchdog Timer Key (WDTKEY)
WKEY7 to WKEY0
(5)
Watchdog Timer Key value
XRAMP
XRAMP7 to XRAMP0
internal RAM access upper byte address
BIT
FUNCTION
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