tda6405ts NXP Semiconductors, tda6405ts Datasheet - Page 9

• Manufacturer Part Number: tda6405ts
• Description: 5 V Mixer/oscillator-pll Synthesizers For Hyperband Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 7 Read data format
Note
1. MSB is transmitted first.
Table 8 Description of symbols used in Table 7
Table 9 Analog-to-digital converter levels; note 1
Note
1. Accuracy is 0.03V
Power-on reset
The power-on detection threshold voltage V
V
device is reset to the power-on state.
At power-on state, the charge pump current is set to
280 A, the tuning voltage output is disabled, the test
bits T2, T1 and T0 are set to logic 001 (automatic charge
pump switch ‘ON’) and RSB is set to logic 1.
1999 Jan 13
Address byte
Status byte
A
POR
FL
ACPS
A2, A1 and A0
CC
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
= 2 V at room temperature. Below this threshold, the
SYMBOL
NAME
A2
1
0
0
0
0
acknowledge
Power-on reset flag (POR = 1 at power-on)
in-lock flag (FL = 1 when the loop is locked)
automatic charge pump switch flag:
digital outputs of the 5-level ADC (see Table 9)
BYTE
ADB
ACPS = 0; active
ACPS = 1; not active
CC
SB
.
A1
0
1
1
0
0
MSB
POR
1
(1)
FL
POR
1
A0
is set to
0
1
0
1
0
ACPS
0
9
0.60V
0.45V
0.30V
0.15V
0 to 0.15V
PUHF is ‘OFF’, which means that the UHF oscillator and
the UHF mixer are switched off. Consequently, the VHF
oscillator and the VHF mixer are switched on. PVHFL and
PVHFH are ‘OFF’, which means that the VHF tank circuit
is working in the VHF I sub-band. The tuning amplifier is
switched off until the first transmission. In that case, the
tank circuit in VHF I is supplied with the maximum tuning
voltage. The oscillator is therefore working at the end of
the VHF I sub-band.
DESCRIPTION
0
1
CC
CC
CC
CC
BITS
to 1.00V
to 0.60V
to 0.45V
to 0.30V
VOLTAGE APPLIED ON ADC INPUT
CC
0
1
CC
CC
CC
CC
MA1
A2
TDA6404; TDA6405;
MA0
A1
Product specification
R/W = 1
TDA6405A
LSB
A0
ACK
A