SAA5X9X Datasheet, PDF (20/68 Pages) NXP Semiconductors – Economy teletext and TV microcontrollers

Philips Semiconductors
Economy teletext and TV microcontrollers
Preliminary specification
SAA5x9x family
REGISTER
FUNCTION
Serial Interface Data Register (S1DAT); note 1
DAT7 to DAT0
I²C-bus data
Serial Interface Status Register (S1STA) - READ only; note 1
STAT4 to STAT0
I²C-bus interface status
Serial Interface Data Register (S1BIT) - READ; note 2
SDI
I²C-bus data bit input
Serial Interface Data Register (S1BIT) - WRITE; note 2
SDO
I²C-bus data bit output
Serial Interface Interrupt Register (S1INT); note 2
SI
I²C-bus interrupt flag
Serial Interface Control Register (S1SCS) - READ; note 2
SDI
serial data input at SDA
SCI
serial clock input at SCL
CLH
clock LOW-to-HIGH transition flag
BB
bus busy flag
RBF
read bit finished flag
WBF
write bit finished flag
STR
clock stretching enable (logic 1)
ENS
enable serial I/O (logic 1)
Serial Interface Control Register (S1SCS) - WRITE; note 2
SDO
serial data output at SDA
SCO
serial clock output at SCL
CLH
clock LOW-to-HIGH transition flag
STR
clock stretching enable (logic 1)
ENS
enable serial I/O (logic 1)
Software ADC Control Register (SAD)
VHI
comparator output indicating that analog input voltage greater than DAC voltage (logic 1)
CH1 and CH0
ADC input channel selection bits; see Table 11
ST
initiate voltage comparison (logic 1); this bit is automatically reset to logic 0
SAD7 to SAD4
4 MSB’s of DAC input value
1997 Jul 07
20