Samsung KCT52A, Руководство по обучению

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KCT52A Chassis
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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 Operation Guaranteed Voltage Current
BM 12 +/– 0.1 V 12 +/– 1.2 V 80mA (typ.)
AGC 8 +/– 0.1 V 9V Max -
BT 33 V +/– 0.1 V 33 +/– 2 V 2mA (typ.)
BP 5 V +/– 0.1 V 5 +/– 0.5 V 50mA (typ.)
Tuner PLL Data Format
MSB LSB
Address Byte 1 1 0 0 0 MA1 MA0 0 A
Divider Byte1 0 N14 N13 N12 N11 N10 N9 N8 A
Divider Byte 2 N7 N6 N5 N4 N3 N2 N1 N0 A
Control Byte 1 CP T2 T1 T0 RSA RSB OS A
Bandswitch Byte X X X X BS4 BS3 BS2 BS1 A
*MA1, MA0: Programmable address bits N14 ... N0: Programmable divider bits
CP: Charge pump current (CP=0; 50 uA, CP-1;250uA) T2, T1, T0: Test bits
RSA, RSB: Reference divider ratio select bits A: Acknowledge
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 Bsn=1 Buffer is ON
A: Acknowledge