saa5547ps NXP Semiconductors, saa5547ps Datasheet - Page 21
saa5547ps
Manufacturer Part Number
saa5547ps
Description
Saa550x; Saa554x Tv Microcontrollers With Closed Captioning Cc And On-screen Display Osd
Manufacturer
NXP Semiconductors
Datasheet
1.SAA5547PS.pdf
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Philips Semiconductors
2000 Feb 23
SI
AA
I
DAT7 to DAT0
I
STAT4 to STAT0
Software ADC Register (SAD)
VHI
CH1 to CH0
ST
SAD7 to SAD4
Software ADC Control Register (SADB)
DC_COMP
SAD3 to SAD0
Stack Pointer (SP)
SP7 to SP0
2
2
C-bus Data Register (S1DAT)
C-bus Status Register (S1STA)
TV microcontrollers with Closed Captioning (CC)
and On-Screen Display (OSD)
(1)
BIT
Serial Interrupt flag. This flag is set and an interrupt request is generated, after
any of the following events occur:
Assert Acknowledge flag. When this bit is set, an acknowledge is returned
after any one of the following conditions:
When the bit is reset, no acknowledge is returned. Consequently, no interrupt is
requested when the own address or general call address is received.
I
I
analog input voltage greater than DAC voltage (logic 1)
ADC input channel select; CH<1:0>:
initiate voltage comparison between ADC input channel and SAD value
4 MSBs of DAC input word
enable DC comparator mode (logic 1)
4 LSBs of SAD value
stack pointer value
2
2
C-bus data
C-bus interface status
A START condition is generated in master mode
The own slave address has been received during AA = 1
The general call address has been received while S1ADR.GC and AA = 1
A data byte has been received or transmitted in master mode (even if arbitration
is lost)
A data byte has been received or transmitted as selected slave
A STOP or START condition is received as selected slave receiver or
transmitter. While the SI flag is set, SCL remains LOW and the serial transfer is
suspended. SI must be reset by software.
Own slave address is received
General call address is received (S1ADR.GC = 1)
A data byte is received, while the device is programmed to be a master receiver
A data byte is received, while the device is selected slave receiver.
00 = ADC3
01 = ADC0
10 = ADC1
11 = ADC2
21
FUNCTION
Preliminary specification
SAA55xx
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