Kenwood TK-940 service manual Clk, Output a, TEST2 TEST1

SEMICONDUCTOR DATA

PLL System : SC370651F or MC145190F-K (PLLIVCO I C I )

Terminal connection diagram

REFin

Din

CLK

VPD			OUTPUT A
P ;	I_UTP: : :			i3
Rx			TEST2
TEST1	9	12	Vcc
-	10	11	fin
fin

Block diagram

					-	DATA OUT
	20	P				f R
REFln		OSC OR
	-					SELECTLOGIC	5OUTPUT A
		4 STAGE
	1	DIVIDER	1	/		N
REFout -		(CONFIGURABLE)
			/ 3	/ 13

DOUBLE BUFFERED

* Bit GrabberTMR REGISTER

16 BlTS

t

Bit Grabberm C REGISTER

'1 8 BITS I

STANDBY POR

LOGIC

Bn Grabberm A REGISTER

+2 4 BlTS

	6-STAGE	12-STAGE
	A COUNTER	N COUNTER
fin 11
- 10	64/65
	PRESCALER	CONTROL
fin	t	LOGIC
SUPPLY CONNECTIONS :	I A		Y y TEST1
PIN12= VCC (VcTO INPUT AMP AND 64/55pnCSCALERl
PIN5 = VPD(VcTO PHASEIFREQUENCY	'9RSA AND 8)
PIN14= VDD(V+TO BALANCE OF Cl'.f'.

PIN7 = GND (COMMON GROUND: