Microprocessor IC306 Pin Descriptions | EFJohnson 7780 manual

CIRCUIT DESCRIPTION

Table 4-1 Microprocessor IC306 Pin Descriptions

	Pin	Port Name	Input or	Description	Active High
	Name	Port Name	Output	Description	or Low
	Name		Output		or Low

	1	RES	Input	Reset pulse input	-
	2	XTAL	Input	System clock connection terminal	-

	3	EXTAL	Input	System clock connection terminal	-

	4	FWE	Input	Not used	-

	5	MDI	Input	Flash ROM data import control (L=load)	Low

	6	MDO	-	Not used	-

	7	NMI	-	Not used (external pull-up)	-

	8	STBY	-	Not used	-

	9	VCC	-	Supply voltage	-

	10	CSHIFT	Output	Clock shift control (H=shift)	High

	11	-	-	Not used	-

	12	INTS	I/O	-	-

	13	RxD	-	Not used (external pull-up)	-

	14	TxD	-	Not used (external pull-up)	-

	15	VSS	-	Ground	-

	16	DTMFSO	Output	Segment data for LCD driver	-

	17	EXTDC	Input	Option signal input	-

	18	DTMFCK	Output	Clock signal for LDC driver	-

	19	-	-	-	-

	20	FCN	Input	FCN button switch	Low

	21	AUX	Input	AUX button switch	Low

	22	DPOTST	Output	Digi-pot strobe signal	-

	23	OFFREQI	Input	Main voltage supply switch	Low

	24	QSELOI	Input	Channel select switch input	-

	25	-	-	-	-

	26	SN_RX	Input	SMARTNET receive data input	-

	27	TXDATA	Output	Subaudible tone/main audio signal out	-

	28	RXDATA	Input	Receive data input	-

	29	BWC	Output	Transmit/receive data filter bandwidth signal output	High

	30	KEYR3	Input	Key matrix scan in	-

	31	KeyR2	Input	Key matrix scan in	-

	32	NOISE	Input	Noise pulse input/squelch control	-

	33	MMUTE	Output	Mutes microphone audio signal (L=mute)	Low

	34	TXPREC	Output	Subaudible signaling tone/damp signal output	-

	35	TEST	Output	Bypass transmit data filter (H=Normal/no bypass)	High

	36	L5V	-	Supply voltage	-

	37	L5V	-	Supply voltage	-

	38	BATIN	Input	Low battery voltage detection	-

	39	RSSI	Input	RSSI (Receive Signal Strength Indicator)	-

	40	-	-	-	-

	41	-	-	-	-

	42	-	-	-	-

	43	-	-	-	-

	44	-	-	-	-

	45	-	-	-	-

	46	VSS	-	Ground	-

November 1999
Part No. 001-7780-500	4-6

Image 70

EFJohnson 7780 service manual Microprocessor IC306 Pin Descriptions, Pin Port Name Input or Description Active High Output

Contents

7780 Page Page Table of Contents Table of Contents CONT’D List of Tables List of Figures General Information Scope of Manual Equipment Description Part Number Breakdown AccessoriesFactory Customer Service Transceiver Identification Toll-Free 800 AccessoriesAccessory Factory Returns Internet Home Intrinsically Safe Information Replacement PartsDefinitions Intrinsically Safe and Nonincendive Ratings Temperature Code T3CPossible Ignition Sources Classification of Hazardous Areas and Atmospheres Typical Hazard Group Class Accessing PC BoardsMaterial Classification Area Classification Removing RF Unit Removing Logic Unit Specifications General Transceiver Operation FeaturesControls and Display TX Indicator Red Indicates when the transmitter is keyed Low-Battery Indicator Amber Front Panel Keys Full Keypad Model DisplayDisplay General Operation Turning Power on and Setting VolumeOption Switches Backlight Function Conv Option Switch FunctionsSee Tone ENABLE/DISABLE Scanning Conventional and SMARTNET/ Smartzone Operation Display Mode Selection Conventional FeaturesMonitoring Before Transmitting Busy Channel Lockout Monitor ModeCall Guard Squelch Power Output Select Penalty TimerConversation Timer Conventional Mode Scanning Priority Channel Sampling DTMF/ANI Signaling Standard Conventional Calls Standard Group Calls SMARTNET/SMARTZONE FeaturesViewing Unit ID Enhanced Private Conversation Calls Transceiver Operation Private Conversation II Calls Telephone Calls Call Alert Messaging Emergency Alarm and CallSending Status Conditions SMARTNET/SMARTZONE Scanning Failsoft OperationDynamic Regrouping Supervisory Tones Menu Description Keypad ProgrammingZone Change Parameter System Parameters Channel Change ParameterChannel Parameters Transceiver Programming Programming SetupPctrunk Software Installation Computer Description Programming File Types Connecting RPI to Computer and TransceiverStarting and Exiting Help Files File Size Indication Screen Pop-Up Buttons and File Size IndicatorProgramming Procedure Creating and Displaying Systems Menu Commands Menu Bar Systems Menu Radio Type MenuDownload Menu Upload Menu Window Menu Band DefaultsRADIO-WIDE Parameter Screens Zones Modify List Screen Radio Wide Scan ListRadio-Wide Scan List Screen Assign Function Buttons Full Spectrum CC Scan RADIO-WIDE Conventional ScreenRADIO-WIDE SMARTNET/SMARTZONE Screen Hot Dtmf Programming Conventional Systems and Channels Adjustable ParametersRADIO-WIDE Portable Options Screen Conventional System General Screen Keypad Editing TimersConventional System Modify Scan List Screen Scan List Button Setting UP Conventional Channels Scan TimersPriority Channel Selection Conventional Channel Screen Parameters Selected Channel Channel Type Transmit PowerSignaling Tx Time-Out ISW Delay Time Restricted AccessTime-Out Timer Splinter Channels Phone Interconnect SMARTNET/SMARTZONE System Other ID’S ScreenSMARTNET/SMARTZONE System Phone Interconnect Screen Private Call SMARTNET/SMARTZONE System Talk Groups Screen SMARTNET/SMARTZONE System Emergency Settings ScreenEmergency Alarm Failsoft Channel Trunking Phone List Screen SMARTNET/SMARTZONE System Lists ScreensMessage Aliasing Screen Announcement Groups Screen Control Channels Screen Trunking Call List Screen Status Aliasing Screen Setting UP SMARTNET/SMART- Zone ChannelsSMARTNET/SMARTZONE Channel Screen Parameters SMARTNET/SmartZone Channel Screen Other Screen Parameters Call Guard CTCSS/DCS Codes and Tones Recommended Tone Call Guard Codes Freq MHz Channels MHz Channels MHz Channels MHz Channels MHz Channels MHz Channels Circuit Description Power Switching and RegulationPower Switching Synthesizer Description Synthesizer Chip IC1 VCO and Tcxo ModulationCharge Pump Q1, Q2, Loop Filter RF Amplifier Q1, First Mixer Q2 Receiver Circuit DescriptionIf Amplifier Q2, LIMITER/DETECTOR IC3 Transmitter Description Antenna Switch and LOW-PASS FilterSquelch Circuit IC4A/B, IC5A Amplifier Q9, Driver Q8 Control Logic and Display Receive Audio Processing Microprocessor IC306 Pin Descriptions Pin Port Name Input or Description Active High Output Hvfulswlrq Receive and Transmit Data Processing Audio Amplifier IC104-IC106Receive Data FILTER/DETECTOR IC102A/B, IC107A/B Transmit Data Filter IC206B/ IC206A Transmit Audio Processing LOW-PASS Filter IC205A/B Smartnet Data Processing Power Setting Operating Time Battery Pack and Charger InformationBattery Pack Function Fahrenheit Celsius Battery Pack and Charger Information Alignment Procedure and Performance Tests Test Setup Tune Software Hqhudo Mm/3/32 Mm/1/8 Phone Jack Preliminary Setup Main Pctune Screen High Power Level = 3.0 watts Low Power Level = 1.0 watt Transmit Frequency and PowerTransmit Power Adjustment Screen Modulation Balance Audio Deviation Squelch AdjustRssi Adjust Data Deviation Performance Tests Receiver Performance Tests Transmit Frequency Power OutputTransmitter Performance Tests Transmit Modulation This page intentionally left blank Chassis Parts Parts ListDisplay Assembly Ref No Description KEY Assembly Display Assembly KEY Assembly If AssemblyIf Assembly PLL Assembly RF Unit RF Unit NJM2904V-TE1 IC RF Unit Logic Unit Logic Unit TDA7233D IC Logic Unit 200K ERJ3GE MP35 MP18 MP25 KEY Front Panel EP2 EP1 MP32 MP33 MP27 MP34 MP28 MP29 MP23 MP22 MP30 MP24 MP26 MP18 PLL Board TOP View Schematic Diagrams and Component LayoutsPLL Board Bottom View If Board TOP View If Board Bottom View Transceiver Block Diagram RF Unit RF Board TOP View MIC RF Board Schematic If AMP Logic Board TOP View HD1 Logic Board Schematic Receive Audio Processing Display Board Bottom View GND KEYR3 KEYR2 KEYR1 KEYR0 KEYS3 KEYS2 KEYS1 KEYS0 GND Display Board Schematic DS3 DS4 DS5 KEY Board Front View KEY Board Back View KEY Board Schematic S S R R R R Scan HC2 HC7 HC8 HC3 Schematic Diagrams and Component Layouts