TDA6500TT NXP Semiconductors, TDA6500TT Datasheet - Page 23

• Manufacturer Part Number: TDA6500TT
• Manufacturer: NXP Semiconductors

Specifications of TDA6500TT

• Pin Count: 32
• Screening Level: Commercial
• Package Type: TSSOP
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
12. Application information
Table 24:
Table 25:
9397 750 15057
Product data sheet
Start
S
Start
S
Address
byte
C2
Address
byte
C2
Complete sequence 1
Complete sequence 2
12.3.1 Write sequence
12.1 Tuning amplifier
12.2 Crystal oscillator
12.3 Examples of I
A
A
The tuning amplifier is capable of driving the varicap voltage without an external transistor.
The tuning voltage output must be connected to an external load of 27 k which is
connected to the tuning voltage supply rail. The loop filter design depends on the oscillator
characteristics and the selected reference frequency.
The crystal oscillator uses a 4 MHz crystal connected in series with an 18 pF capacitor
thereby operating in the series resonance mode. Connecting the crystal to the ground is
preferred, but it can also be connected to the supply voltage.
Conditions:
Table 24
For the complete sequence see
Other I
Divider
byte 1
06
Control
byte
DE
f
P0 = on (to switch on low band)
P3 = on
I
f
N = 1600
f
I
AGC take-over point = set to 112 dB V asymmetrical
S = START
A = acknowledge
P = STOP
osc
CP
step
XTAL
AGC
= 280 A
= 100 MHz
= 62.5 kHz
= 245 nA
2
= 4 MHz
A
A
C-bus addresses may be selected by applying an appropriate voltage to pin AS.
to
29
Divider
byte 2
40
Auxiliary
byte
20
show various write sequences where:
2
C-bus control
5 V mixer/oscillator and synthesizer for PAL and NTSC standards
A
A
Rev. 02 — 14 June 2005
Control
byte
CE
Control
byte
CE
Table 24
A
A
Band switch
byte
09
Band switch
byte
09
(sequence 1) or
A
A
TDA6500; TDA6501
Control
byte
DE
Divider
byte 1
06
Table 25
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
A
A
(sequence 2).
Auxiliary
byte
20
Divider
byte 2
40
A
A
Stop
P
Stop
P
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