Tuner Description - Samsung KCT52A Training Manual

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Tuner Description

TU01 TECC1080PA25A Tuner
Band change-over system: PLL control system
Tuning system: Electronic tuning system with PLL
Voltage & Current at each terminal
Terminal Supply Voltage
BM 12 +/– 0.1 V
AGC 8 +/– 0.1 V
BT 33 V +/– 0.1 V
BP 5 V +/– 0.1 V
Tuner PLL Data Format
Address Byte
Divider Byte1
Divider Byte 2
Control Byte
Bandswitch Byte
*MA1, MA0: Programmable address bits
CP: Charge pump current (CP=0; 50 uA, CP-1;250uA) T2, T1, T0: Test bits
RSA, RSB: Reference divider ratio select bits
OS: Tuning amplifier control bit (OS=0; Tuning voltage is ON, OS=1; Tuning voltage is off)
BS4 .. BS1: PNP bandswitch buffers control bits Bsn=0 Buffer is OFF
A: Acknowledge
TOC
SAMSUNG GROUP
SAMSUNG GROUP
Operation Guaranteed Voltage
12 +/– 1.2 V
9V Max
33 +/– 2 V
5 +/– 0.5 V
MSB
1 1 0
0 N14 N13
N7 N6 N5
1 CP T2
X X X
Current
80mA (typ.)
-
2mA (typ.)
50mA (typ.)
0 0 MA1
N12 N11 N10
N4 N3 N2
T1 T0 RSA
X BS4 BS3
N14 ... N0: Programmable divider bits
A: Acknowledge
Bsn=1 Buffer is ON
KCT52A Chassis
LSB
MA0 0 A
N9 N8 A
N1 N0 A
RSB OS A
BS2 BS1 A
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