TDA8822 Datasheet, PDF (10/28 Pages) NXP Semiconductors – Universal I2C-bus programmable RF modulator

Philips Semiconductors
Universal I²C-bus programmable RF
modulator
Preliminary specification
TDA8822
Table 6 RF oscillator on/off setting (see note 1)
STATE OF RF0
0
1
stopped; no RF carrier
operating; normal use
ACTION ON RF OSCILLATOR
Note
1. This table is valid only if bit TPSG is set to logic 0.
Table 7 Output port programming
STATE OF P0
0
1
PORT STATE
high impedance
sinking current
VOLTAGE ON PORT
(with a pull-up resistor to V_CCD)
close to V_CCD
close to 0 V
Table 8 Overview of the normal modes
T0 RF0 TPSG P0
PIN TPSG
0
1
0
X⁽¹⁾ input: open
0
1
0
X⁽¹⁾ input: to DGND
0
1
1
X⁽¹⁾ output: sinking current
0
0
0
X⁽¹⁾ input: open or to DGND
0
0
1
X⁽¹⁾ input: open
0
0
1
X⁽¹⁾ input: to DGND
0
X⁽¹⁾
X⁽¹⁾
0 X⁽¹⁾
0
X⁽¹⁾
X⁽¹⁾
1 X⁽¹⁾
Note
1. X means logic 0 or logic 1, don’t care.
MODE
RF on; TPSG off
RF on; TPSG on
RF on; TPSG on
RF off
RF on; TPSG off; sound oscillator off
RF on; TPSG on; sound oscillator off
Port P0 off (high impedance)
Port P0 on (sinking current)
1997 Jan 08
10