TDA6404 Datasheet, PDF (8/32 Pages) NXP Semiconductors – 5 V mixer/oscillator-PLL synthesizers for hyperband tuners

Philips Semiconductors
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
Product specification
TDA6404; TDA6405;
TDA6405A
Table 4 Address selection I²C-bus
MA1
0
0
1
1
MA0
0
1
0
1
VOLTAGE APPLIED ON AS INPUT
0 to 0.1V_CC
open or 0.2V_CC to 0.3V_CC
0.4V_CC to 0.6V_CC
0.9V_CC to 1.0V_CC
Table 5 Test mode
T2
T1
T0
TEST MODES
0
0
0
automatic charge pump off
0
0
1
automatic charge pump on; note 1
0
1
X
charge pump is ‘OFF’
1
1
0
charge pump is sinking current
1
1
1
charge pump is sourcing current
1
0
0
f_REF is available on pin ADC; note 2
1
0
1
1_{⁄2fDIV is available on pin ADC; note 2}
Notes
1. This is the default mode at Power-on reset.
2. The ADC input cannot be used when these test modes are active.
Table 6 Reference divider ratio select bits
RSA
X
0
1
RSB
0
1
1
REFERENCE DIVIDER RATIO
640
1 024
512
FREQUENCY STEP (kHz)
6.25
3.90625
7.8125
Read mode
Data can be read from the devices by setting the R/W bit
to logic 1 (see Tables 7 and 8). After the slave address
has been recognized, the devices generate an
acknowledge pulse and the first data byte (status byte) is
transferred on the SDA line (MSB first). Data is valid on the
SDA line during a HIGH-level of the SCL clock signal.
A second data byte can be read from the devices if the
processor generates an acknowledge on the SDA line
(master acknowledge). End of transmission will occur if no
master acknowledge occurs. The devices will then release
the data line to allow the processor to generate a STOP
condition. The POR flag is set to logic 1 at power-on.
The flag is reset when an end-of-data is detected by the
devices (end of a read sequence). Control of the loop is
made possible with the in-lock flag FL which indicates
when the loop is locked (FL = 1).
The ACPS flag is LOW when the automatic charge pump
switch mode is ‘ON’ and the loop is locked. In other
conditions, ACPS = 1. When ACPS = 0, the charge pump
current is forced to the LOW value.
A built-in ADC is available on ADC pin. This converter can
be used to apply AFC information to the controller from the
IF section of the television. The relationship between the
bits A2, A1 and A0 is given in Table 9.
1999 Jan 13
8