參數(shù)資料
型號： 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）
文件頁數(shù)： 22/84頁
文件大?。?/td> 352K
代理商： SAA55XX
2000 Feb 23
22
Philips Semiconductors
Preliminary specification
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
SAA55xx
Timer/Counter Control Register (TCON)
TF1
Timer 1 overflow flag.
Set by hardware on timer/counter overflow. Cleared by
hardware when processor vectors to interrupt routine.
Timer 1 run control bit.
Set/cleared by software to turn timer/counter on/off.
Timer 0 overflow flag.
Set by hardware on timer/counter overflow. Cleared by
hardware when processor vectors to interrupt routine.
Timer 0 run control bit.
Set/cleared by software to turn timer/counter on/off.
Interrupt 1 edge flag
(both edges generate flag). Set by hardware when
external interrupt edge detected. Cleared by hardware when interrupt processed.
Interrupt 1 type control bit.
Set/cleared by software to specify edge/LOW level
triggered external interrupts.
Interrupt 0 edge l flag.
Set by hardware when external interrupt edge detected.
Cleared by hardware when interrupt processed.
Interrupt 0 type flag.
Set/cleared by software to specify falling edge/LOW level
triggered external interrupts.
TR1
TF0
TR0
IE1
IT1
IE0
IT0
14-bit PWM MSB Register (TDACH)
TPWE
TD13 to TD8
activate this 14-bit PWM (logic 1)
6 MSBs of 14-bit number to be output by the 14-bit PWM
14-bit PWM LSB Register (TDACL)
TD7 to TD0
8 LSBs of 14-bit number to be output by the 14-bit PWM
Timer 0 High byte (TH0)
TH07 to TH00
Timer 0 high byte
Timer 1 High byte (TH1)
TH17 to TH10
Timer 1 high byte
Timer 0 Low byte (TL0)
TL07 to TL00
Timer 0 low byte
Timer 1 Low byte (TL1)
TL17 to TL10
Timer 1 low byte
Timer/Counter Mode Control (TMOD)
GATE
C/T
M1 to M0
gating control Timer/Counter 1
Counter/Timer 1 selector
mode control bits timer/counter 1; M<1:0>:
00 = 8-bit timer or 8-bit counter with divide-by-32 prescaler
01 = 16-bit time interval or event counter
10 = 8-bit time interval or event counter with automatic reload upon overflow;
reload value stored in TH1
11 = stopped
gating control Timer/Counter 0
Counter/Timer 0 selector
GATE
C/T
BIT
FUNCTION
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