TC9106 Aand TC9119 PLL Frequency Synthesizer

Overview

This 27 MHz band, PLL frequency synthesizer LSI chip is designed specifically for CB transceivers. The integrated circuit`s incorporates PLL circuitry and a controller for CB applications on a single CMOS chip.
This PLL-circuit use a 8 bit ROM programmable divide-by-N counter. The ROM-table is programmed from factory to 40 channels.

Pin	Name	Description
1	Vcc	Positive Supply Voltage
2	RI	Referency Oscillator Input
3	CL
4	LD	Loop Detect - Unlocked=LOW Locked=HIGH
5	PD	Phase Detector Output
6	AI	Amp. Input
7	AO	Amp. Output
8	T/R	Transmit=HIGH Receive=LOW
9	F in	VCO Frequency Input
10	P0	Programmable input 0
11	P1	Programmable input 1
12	P2	Programmable input 2
13	P3	Programmable input 3
14	P4	Programmable input 4
15	P5	Programmable input 5
16	P6	Programmable input 6
17	P7	Programmable input 7
18	GND	Ground

Explanation of pin function terms

Programming Chart for TC9106

Channel	RX Divided by	TX Divided by
1	3254	3345
2	3256	3347
..	....	....
22	3306	3397
..	....	....
40	3342	3433

NOTES:
1. 91-count upshift on TX provides 455kHz offset for receiver IF mixing.
2. Reference and Programmable Dividers use 5kHz steps.

Example of VCO Determination, Channel 1:
3254 x 5kHz = 16.270MHz (RX-Mode)
3345 x 5kHz = 16.725MHz (TX-Mode)

Programming Chart for TC9119

Channel	RX Divided by	TX Divided by
1	3381	3472
2	3383	3474
..	....	....
40	3459	3550

NOTES:
1. Identical operation principal to TC9106. Only difference is the N-Codes themselves.
2. reference and Programmable Dividers use 5kHz step.
3. 91-count upshift on TX provides 455kHz offset for receiver IF Mixing.

Example of VCO Determination, Channel 1:
3381 x 5kHz = 16.905MHz (RX-Mode)
3472 x 5kHz = 17.360MHz (TX-Mode)
+ 1.25kHz tuned offsets.

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