MX214J

DATA BULLETIN MX214/224 Features       CTCSS Highpass Filter Good Recovered Audio Quality Fixed and Rolling Code Modes Serial (MX214) and Parallel (MX224) Loading Options 32 Programmable Split Points Half-Duplex Capability POWERSAVE LOAD / LATCH SERIAL CLOCK ENABLE / MUTE CLEAR / SCRAMBLE Rx / Tx (SER / PAR) A0 A1 A2 A3 A4 (SERIAL DATA IN) CKB EN ⋅ PS ⋅ Rx Rx IN PS BIAS Tx ⋅ PS Tx ⋅ PS Tx IN FILTER 1 PS BIAS CKA C6 Tx Tx FILTER 2 CKA Rx MUTE BIAS FILTER 3 CK3 CTCSS FC2 C5 FILTER 4 CK4 Rx FC1 Rx Rx CKA FC1 FC2 PS CK3 CK4 ROM CLOCK DIVIDER INPUT LATCHES EN / MUTE CLEAR / SCRAMBLE Rx / Tx Variable Split Band Inverter Applications   Mobile Radio Voice Security Cellular Telephone Voice Security XTAL / CLOCK 1MHz OSC XTAL 1MHz VDD CLOCK DIVIDER CKB CKB CLOCK SWITCHING Rx / Tx VBIAS VSS Rx PS ⋅ EN ⋅ Tx Tx OUT PS + EN ⋅ Tx Tx SCRAMBLE BIAS Σ CK4 CLEAR PS ⋅ MUTE ⋅ Rx Rx OUT BIAS Tx Rx BIAS BIAS PS + EN ⋅ Rx The MX214/224 Variable Split Band Inverters are designed for mobile and cellular radio voice security applications. Digital control functions are loaded serially into the MX214. The MX224 is loaded in parallel. The MX214/224 ICs include a highpass filter that rejects subaudio frequencies, ensuring full CTCSS compatibility. This CTCSS filter is not included on the earlier generation MX204 VSB Inverter. The MX214/224 splits the voiceband (300-2700Hz) into upper and lower subbands, and inverts each subband about itself. The ‘split point’ (defined as the frequency where the voice band is subdivided), is externally programmable to 32 distinct values in the 300 to 3000Hz range. In the ‘fixed code’ mode, a single point is used. Fixed mode operation nets approximately 4 mutually exclusive secure channels. In ‘rolling code’ mode, the split point is changed many times per second, usually under control of a microprocessor. Rolling code scrambling requires synchronization, offers higher security than fixed code operation, and provides a much greater number of mutually exclusive secure channels. The MX214/224 offers a recovered audio product close to that of a telephone. The on-chip ‘ Mute’ function is useful when implementing rolling code continuous synchronization schemes. ‘Powersave’ and ‘Clear/Scramble’ controls are also included on-chip. Timing and filter clocks are derived internally from an on-chip 1MHz reference oscillator driven by a 1MHz crystal or clock pulse input. The MX214 and the MX224 operate from a single 5.0V supply and available in the following packges: 22-pin CDIP (MX214J/MX224J), 22-pin PDIP (MX214P/MX224P), and 24-pin PLCC (MX214LH/MX224LH).
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 2 MX214/224 Contents Section Page 1. Block Diagram................................................................................................................ 3 2. Signal List....................................................................................................................... 4 3. External Components.................................................................................................... 7 4. General Description....................................................................................................... 8 5. Application ..................................................................................................................... 9 5.1 Audio Quality .......................................................................................................................... 9 6. Performance Specifications........................................................................................ 11 6.1 Electrical Specifications........................................................................................................ 11 6.1.1 6.1.2 6.1.3 6.1.4 Absolute Maximum Limits ....................................................................................................... 11 Operating Limits...................................................................................................................... 11 Operating Characteristics ....................................................................................................... 12 Timing ..................................................................................................................................... 14 6.2 Packages.............................................................................................................................. 15 MX-COM, Inc. reserves the right to change specifications at any time without notice.
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 3 MX214/224 1. Block Diagram XTAL / CLOCK INPUT LATCHES EN / MUTE CLEAR / SCRAMBLE Rx / Tx 1MHz 1MHz OSC XTAL POWERSAVE LOAD / LATCH SERIAL CLOCK ENABLE / MUTE CLEAR / SCRAMBLE Rx / Tx (SER / PAR) A0 A1 A2 A3 A4 (SERIAL DATA IN) CKB EN ⋅ PS ⋅ Rx Rx IN PS BIAS Tx ⋅ PS Tx ⋅ PS Tx IN FILTER 1 PS BIAS CKA C6 PS + EN ⋅ Rx Tx Tx FILTER 2 CKA Rx MUTE BIAS FILTER 3 CK3 CTCSS FC2 C5 FILTER 4 CK4 Rx FC1 Rx Tx Rx BIAS Rx PS + EN ⋅ Tx Tx SCRAMBLE BIAS CKA FC1 FC2 PS CK3 CK4 CKB CKB CLOCK SWITCHING Rx / Tx ROM CLOCK DIVIDER CLOCK DIVIDER VDD VBIAS VSS Rx PS ⋅ EN ⋅ Tx Tx OUT Σ CK4 CLEAR PS ⋅ MUTE ⋅ Rx Rx OUT BIAS BIAS Figure 1: Block Diagram
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 4 MX214/224 2. Signal List MX224 Pin No. J/P LH 1 1 Signal Name Description MX214 Pin No. J/P LH 7 1 Xtal/Clock 8 9 2 3 2 2 Xtal Serial Data Input Input to the clock oscillator inverter. A 1MHz crystal input or externally derived 1MHz clock is injected here. Output of the clock oscillator inverter. This pin is used to input an 8-bit word representing the digital control functions. This word is loaded using the serial data clock and in input in the following sequence: MUTE, CLEAR, Rx / Tx , A0, A1, A2, A3, A4. The Load / Latch is operated on the completion. Reference the timing diagram in Figure 8. In parallel mode, these five digital inputs define the split point frequency. Each of the 5 input pins has a 1M internal pull-up resistor. See Table 4 for programming information. This digital input selects the Receive and Transmit paths and configures upperband and lowerband filter bandwidths while setting the CTCSS highpass filter position on the signal path. See Table 2, Figure 6, and Figure 7. 1M internal pull-up resistor (Rx). This pin must be connected to VSS for serial loading. Internal 1M pull-up resistor. This digital input puts the device into ‘Clear’ or ‘Scramble’ mode by controlling the application of carrier frequency to the Upper and Lower band balanced modulators. In ‘Scramble’ mode, the balanced modulator carrier frequency values are selected by the split point address A0-A4. See Table 4. In ‘Clear’ mode, the carriers are disabled and the balanced modulators are bypassed internally, i.e. the lower band signal is not added to the output signal. 1MHz internal pull-up resistor (Clear). This digital function is used to disable the Receive or the Transmit signal paths for rolling code synchronization while maintaining bias conditions. Synchronization data can be transmitted during the Mute periods, as is done in the MX1204 VSB Scrambler Module. 1M Internal pull-up resistor (Enable) This is the externally applied data clock frequency used to shift input data along in devices wired in the Serial-loading mode. One full data clock cycle is required to shift one data bit completely into the register. See Timing Diagram Figure 8. 1M Internal pull-up resistor. 3 – A4 4 – A3 5 – A2 6 – A1 7 – A0 8 3 – A4 4 – A3 5 – A2 6 – A1 7 – A0 8 Programming Inputs Rx / Tx 13 8 9 9 Parallel / Serial Clear/Scramble 10 10 Enable/Mute 14 10 Serial Clock Input
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 5 MX214/224 MX214 Pin No. J/P LH 15 11 MX224 Pin No. J/P LH 11 11 Signal Name Description Load / Latch 16 12 12 12 Powersave 17 18 19 13 14 15 13 14 15 13 14 15 VSS Internal connection Rx Output This pin controls the loading of the 8 digital function inputs (ENABLE, CLEAR, A0-A4) into the internal register. When this pin is at a logic ‘1’, all eight inputs are transparent and new data acts directly. For controlled changing of parameters in the parallel, Load / Latch must be kept at logic ‘0’ while a new function is loaded, then strobed 0-1-0 to latch the inputs in. For serial loading, the serial data should be loaded with the Load / Latch at logic ‘0’ and then the Load / Latch strobed 0-1-0 on completion of data loading. Internal 1M pull-up resistor (Load). See Figure 8. This digital input is used to place the MX214/224 into Powersave mode where all parts of the device except the 1MHz oscillator are shut down. All signal input and output lines are made open circuit, free of all bias. This allows signal paths to be routed externally around the device, while reducing current consumption. A logic ‘0’ at this input enables the device to work normally as shown in Table 2. Internal 1M pull-up resistor. Negative supply (GND) This pin is internally connected. Leave open circuit. This is the processed received audio signal output. This pin is held at a DC ‘bias’ voltage for all functions except Powersave. This buffered output is driven by the summing circuit in the Rx mode. Signal paths and bias levels are detailed in Table 2 and Figure 7. This is the processed audio output for the transmission channel. This pin is held at a DC ‘bias’ voltage for all functions except Powersave. This summed and buffered signal is passed through the CTCSS high pass Filter to the output pin in the Tx Mode. Signal paths and bias levels are detailed in Table 2 and Figure 6. Normally at VDD/2, this pin requires an external decoupling capacitor (C7) to VSS. This is the analog received signal input. This pin is held at a DC ‘bias’ voltage by a 300k on-chip bias resistor, which is selected for all functions except Powersave. It must be connected to external circuitry by capacitor C3. See Figure 2 and Figure 3. This input is routed through the CTCSS High Pass Filter in Rx mode to remove subaudio frequencies from the voiceband. Signal paths and bias levels are detailed in Table 2 and Figure 7. The output of the Input Filter of the Upperband limit. The Rx / Tx functions sets the lowpass filter at 3400Hz or 2700Hz respectively. This output must be connected to the Highband Balanced modulator input via capacitor C5. See Figure 2 and Figure 3. 20 16 16 16 Tx Output 21 22 17 18 17 18 17 18 VBIAS Rx Input 1 19 19 19 Highband Filter Output
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 6 MX214/224 MX214 Pin No. J/P LH 2 20 MX224 Pin No. J/P LH 20 20 Signal Name Description Highband Balanced Modulator Input 3 21 21 21 Lowband Balanced Modulator Input 4 22 22 22 Tx input 5 23 23 23 Lowband Filter Output 6 10, 11, 12 24 24 24 4, 5, 6, 7, 9 VDD N/C The input to the Balanced Modulator of the Upperband limit. This input must be connected to the Highband Filter Output via capacitor C5. See Figure 2 and Figure 3. The input to the Balanced Modulator of the Lowerband limit. This input must be connected to the Lowband Filter Output via capacitor C6. See Figure 2 and Figure 3. This analog ‘Clear’ audio input for the VSB Scrambler. This pin is held at a DC ‘bias’ voltage by a 300k on-chip bias resistor, which is selected for all functions except powersave. In must be connected to external circuitry by capacitor C4. See Figure 2 and Figure 3. This input, in Tx mode, is connected to Upper and Lowerband input filters. Signal paths and bias levels are detailed in Table 2 and Figure 6. The output of the Input filter of the lowerband limit. The Rx / Tx function determines which filter is used (Filter 1 or 2). See Figure 6 and Figure 7. This output must be connected to the Lowband balanced modulator input via capacitor C6. See Figure 7. A single 5.0V supply is required. No Connection Table 1: Signal List Rx/ Tx = 1 Rx Path Rx Out Level Tx Path Tx Out Level Enabled Bias Disabled Bias Rx/ Tx = 0 Disabled Bias Enabled Bias MUTE = 0 Disabled Bias Disabled Bias POWERSAVE Disabled High Impedance Disabled High impedance Table 2: Functions Influencing Signal Paths
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 7 MX214/224 3. External Components VDD C5 1 (19) 2 (20) C6 C4 (18) 22 (17) 21 (16) 20 (15) 19 (14) 18 (13) 17 (12) 16 (11) 15 (10) 14 (8) 13 12 Rx IN VBIAS Tx OUT Rx OUT N/C VSS C3 C7 3 (21) Tx IN VDD 4 (22) 5 (23) 6 (24) 7 (1) 8 (2) 9 (3) 10 11 C8 Xtal/Clock Xtal Xtal/Clock X1 R2 C2 C1 R1 Around Through Load/Latch Serial Clock In Parallel/Serial N/C VSS Serial Data In N/C N/C Xtal VSS MX214P, MX214J (MX214LH) Figure 2: Recommended External Components ‘MX214 Serial Loading’ VDD Xtal/Clock Xtal A4 Programming Inputs A3 A2 A1 A0 Xtal/Clock X1 R2 C2 C1 R1 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VDD C6 Tx IN C4 C5 Rx IN VBIAS Tx OUT Rx OUT N/C VSS C3 C8 Rx/Tx Clear/Scramble Enable/Mute Load/Latch Around/Through Xtal C7 VSS MX224P, MX224J (MX224LH) Figure 3: Recommended External Components 'MX224 Parallel Loading'
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 8 MX214/224 Component R1 R2 C1 C2 C3 C4 C5 C6 C7 C8 X1 Notes Value 1.0M Selectable 33pF 68pF 15nF 15nF Tolerance ±10% ±20% ±20% ±20% ±20% ±20% ±20% ±20% ±20% 1 1 1.0µF 1.0µF 1.0µF 1.0µF 2 1MHz Table 3: Recommended External Components Notes: 1. C5 and C6 are coupling capacitors between filter outputs and balanced modulator inputs. 2. For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at least 40% of VDD, peak to peak. Tuning fork crystals generally cannot meet this requirement. To obtain crystal oscillator design assistance, consult your crystal manufacturer. 4. General Description The MX214/224 Variable Split Band Inverters are designed for mobile and cellular radio voice security applications. Digital control functions are loaded serially into the MX214. The MX224 is loaded in parallel. The MX214/224 ICs include a highpass filter that rejects subaudio frequencies, ensuring full CTCSS compatibility. This CTCSS filter is not included on the earlier generation MX204 VSB Inverter. The MX214/224 splits the voiceband (300-2700Hz) into upper and lower subbands, and inverts each subband about itself. The ‘split point’ (defined as the frequency where the voice band is subdivided), is externally programmable to 32 distinct values in the 300 to 3000Hz range. In the ‘fixed code’ mode, a single point is used. Fixed mode operation nets approximately 4 mutually exclusive secure channels. In ‘rolling code’ mode, the split point is changed many times per second, usually under control of a microprocessor. Rolling code scrambling requires synchronization, offers higher security than fixed code operation, and provides a much greater number of mutually exclusive secure channels. The MX214/224 offers a recovered audio product close to that of a telephone. The on-chip ‘ Mute’ function is useful when implementing rolling code continuous synchronization schemes. ‘Powersave’ and ‘Clear/Scramble’ controls are also included on-chip. Timing and filter clocks are derived internally from an on-chip 1MHz reference oscillator driven by a 1MHz crystal or clock pulse input.
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 9 MX214/224 5. Application The MX214 represents both the MX214 and the MX224 throughout this section. Recommended external components are shown in Figure 2 and Figure 3. In ‘Scramble’ mode, split point frequencies are selected and set in accordance with the ROM address code present at the inputs A0-A4. See Table 4. In ‘Clear’ mode, both upper and Lowerband filter limits are used (see Figure 6 and Figure 7), the carrier frequencies are turned off, and the balanced modulators are bypassed internally. The Lowband audio is removed from the output signal prior to summing. ROM Address A4-A0 00000 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111 Split Point Hz 2800 2625 2470 2333 2210 2100 2000 1909 1826 1750 1680 1555 1448 1354 1272 1200 Low Band Carrier, Hz fC1 3105 2923 2777 2631 2512 2403 2304 2212 2127 2049 1984 1858 1748 1655 1572 1501 High Band Carrier, Hz fC2 6172 6024 5813 5681 5555 5494 5376 5263 5208 5102 5050 4950 4807 4716 4629 4587 ROM Address A4-A0 10000 10001 10010 10011 10100 10101 10110 10111 11000 11001 11010 11011 11100 11101 11110 11111 Split Point Hz 1135 1050 976 913 857 792 736 688 636 591 552 512 471 428 388 350 Low Band Carrier, Hz fC1 1436 1351 1278 1213 1157 1094 1037 988 936 891 853 813 772 728 688 650 High Band Carrier, Hz fC2 4504 4424 4347 4310 4273 4166 4132 4065 4032 3968 3937 3906 3846 3816 3787 3731 Table 4: ROM Address Programming The MUTE function disables the MX214/224’s audio outputs to allow periodic transmission of synchronization data. A logic ‘0’ at this input isolates the device while leaving the audio input and output ins at bias level (See Table 2). When the MX21/224 is in Powersave mode, audio signals may be hardwired around the device since the input and output pins are open circuit. See Table 2. 5.1 Audio Quality Figure 4 shows the recommended basic audio system layout using pre- and de-emphasis circuitry to maintain good recovered speech quality. The Transmit mode, Do Not pre-emphasize the audio output of the MX214. In the Receive mode, de-emphasis should be used after the MX214. Amplitude Control Pre-emphasis MX214 Tx Rx Flat Amplitude Channel 300-3400Hz MX214 De-emphasis Amplitude Control (Optional) Frequency Inverter Frequency Inverter (Optional) Figure 4: Recommended Basic Communication Audio System Layout Figure 5 shows the recommended basic audio system layout if it is necessary to install the MX214 within a radio having pre- and de-emphasis circuitry as a standard. This is where post-emphasis access is not possible in the transmitter.
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 10 MX214/224 Amplitude Control Pre-emphasis MX214 De-emphasis Pre-emphasis Tx Rx Flat Amplitude Channel 300-3400Hz MX214 De-emphasis (Additional) Frequency Inverter (Additional) (Fitted) Frequency Inverter (Fitted) (Optional) Figure 5: Recommended Basic Radio Communication Audio System Layout. During the Transmit function the low pass and CTCSS filters are configured automatically as shown in Figure 6, with cut-off frequencies (-3dB) indicated. CK3 C5 FC2 CK3 FILTER 4 3400Hz 2700Hz Tx IN PS 2900Hz 2900Hz SCRAMBLE CLEAR CLEAR SCRAMBLE FILTER 3 3400Hz 3400Hz CK4 CKB 2600Hz 2600Hz FILTER 2 BIAS Σ CLEAR SCRAMBLE Tx OUT CTCSS 300Hz PS + ENABLE ⋅ Tx BIAS BIAS FILTER 1 CKA C6 FC1 CKA Figure 6: Basic Tx Path During the Receive function the Low Pass and CTCSS filters are configured automatically as shown in Figure 7, with cut-off frequencies (-3dB) indicated. CK3 C5 FC2 CK4 CKB FILTER 3 3400Hz 3400Hz CLEAR SCRAMBLE FILTER 4 3400Hz 2700Hz CK4 Rx IN CTCSS 300Hz 2600Hz 2600Hz FILTER 2 SCRAMBLE CLEAR 2900Hz 2900Hz FILTER 1 BIAS CKA C6 FC1 CKA SCRAMBLE Σ PS + ENABLE ⋅ Tx CLEAR Rx OUT PS Rx ⋅ MUTE BIAS BIAS BIAS Figure 7: Basic Rx Path
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 11 MX214/224 6. 6.1 6.1.1 Performance Specifications Electrical Specifications Absolute Maximum Limits Exceeding these maximum ratings can result in damage to the device. General Supply (VDD-VSS) Voltage on any pin to VSS Current VDD VSS Any other pin P/LH Packages Total allowable Power dissipation at TAMB = 25C Derating above 25C Operating Temperature Storage Temperature J Package Total allowable Power dissipation at TAMB = 25C Derating above 25C Operating Temperature Storage Temperature -30 -55 10 85 125 800 mW mW/C above 25C C C -30 -40 10 70 85 800 mW mW/C above 25C C C -30 -30 -20 30 30 20 mA mA mA Notes Min. -0.3 -0.3 Typ. Max. 7.0 VDD + 0.3 Units V V 6.1.2 Operating Limits Correct Operation of the device outside these limits is not implied. Min. Supply (VDD-VSS) Operating Temperature (P/LH) Operating Temperature (J) Xtal Frequency 4.5 -30 -30 1.0 Typ. 5.0 Max. 5.5 70 85 Units V C C MHz
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 12 MX214/224 6.1.3 Operating Characteristics For the following conditions unless otherwise specified. VDD = 5.0V @ TAMB = 25C Audio Level 0dB ref. = 775mVRMS, Xtal/Clock Frequency = 1.0MHz Notes Static Values Voltage Current Enabled Powersave Analog Input Impedances Tx/Rx Input (Enabled) Tx/Rx Input (Powersave) Balanced Modulator Analog Output Impedances Rx Output (Tx Mode) Rx Output (Rx Mode) Rx Output (Powersave) Tx Output (Tx Mode) Tx Output (Rx Mode) Tx Output (Powersave) Input LPF Digital Values Digital Input Impedance Dynamic Values Input Logic ‘1’ Input logic ‘0’ Xtal/Clock Frequency Analog Input Level Carrier Breakthrough Baseband Breakthrough Filter Clock Breakthrough Output Noise Passband Characteristics Clear Mode Passband Gain Output Lower 3dB Point (Rx or Tx) Output Upper 3dB Point (Rx or Tx) Scramble-Descramble Received Signal Passband Gain Received Signal Lower 3dB Point Received Signal Upper 3dB Point Transmitted Signal Lower 3dB Point Transmitted Signal Upper 3dB Point 5 6 0 400 2700 300 3400 dB Hz Hz Hz Hz 7 0 300 3400 dB Hz Hz 1 1, 2, 3 1, 2, 3 1, 4 -18 -55 -33 -50 -45 1 6 3.5 1.5 V V MHz dB dB dB dB dB 100 k 1 1 100 1 2 100 2 k k M k k M k 1 40 100 k M k 8 1.2 mA mA 4.5 5.0 5.5 V Min. Typ. Max. Units
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 13 MX214/224 Notes CTCSS (Highpass Filter) -3dB Point Passband gain Stopband Attenuation at f < 250Hz Operating Characteristics Notes: 1. Measured at the output of a single device. 2. Tx Mode. 3. Rx Mode. 4. With input AC short-circuited to VSS. Min. Typ. 300 0 40 Max. Units Hz dB dB 5. Measured at the output of a receiving device in a scrambler-descrambler system with a transmission channel having a flat amplitude response and a bandwidth of 300Hz to 3400Hz and measured relative to the input signal at the transmitting device. 6. Excluding split point 150Hz. 7. Measured at the Rx or Tx output pin of a single source.
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 14 MX214/224 6.1.4 Timing Timing Serial Mode tSMS tPWH tPWL tDS tDHS tLL tLLW Parallel Mode tLLW tDSP tDHP Load / Latch Pulse Width Data Set Up Time Data Hold Time 150 150 20 ns ns ns Serial Mode Enable Set-Up Serial Clock ‘High’ Pulse Width Serial Clock ‘Low’ Pulse Width Data Set Up Time Data Hold Time Load / Latch Set Up Time Load / Latch Pulse Width 250 250 250 150 50 250 150 ns ns ns ns ns ns ns Notes Min. Typ. Max. Units Table 5: Serial and Parallel Timing Serial Loading PARALLEL / SERIAL tSMS SERIAL CLOCK tDS SERIAL DATA INPUT 1st bit ENABLE tDHS 2nd bit CLEAR tPWL 3rd bit Rx / Tx 8th bit A4 tLL tPWH LOAD / LATCH tLLW Parallel Loading tLLW LOAD / LATCH tDSP PARALLEL DATA INPUTS tDHP NOTE: For 'Serial Load' devices the data loading sequence is: - Enable - Clear - Rx/Tx - A0 - A1 - A2 - A3 - A4 Figure 8: Loading Timing Diagram
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 15 MX214/224 6.2 Packages Package Tolerances A DIM. A B C E E1 F H J J1 K K1 L P T MIN. TYP. MAX. 1.080 (27.43) 1.060 (26.92) 0.384 (9.75) 0.376 (9.55) 0.230 (5.84) 0.165 (4.19) 0.515 (13.08) 0.466 (11.84) 0.408 (10.36) 0.418 (10.62) 1.000 (25.40) 0.020 (0.51) 0.018 (0.46) 0.055 (1.40) 0.058 (1.47) 0.080 (2.03) 0.075 (1.91) 0.080 (2.03) 0.171 (4.34) 0.115 (2.92) 0.100 (2.54) 0.0098 (0.249) 0.0102 (0.259) B E1 E PIN1 K H L J J1 F P K1 C T NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 9: 22-pin CDIP Mechanical Outline: Order as part no. MX214J or MX224J A DIM. A B C E E1 H J J1 K L P T Y Package Tolerances MIN. 1.080 (27.43) 0.330 (8.38) TYP. MAX. 1.100 (27.94) 0.360 (9.14) B E1 Y E PIN 1 T K H L J J1 P C 0.185 (4.70) 0.420 (10.67) 0.480 (12.19) 0.390 (9.91) 0.420 (10.67) 0.020 (0.51) 0.045 (1.14) 0.020 (0.51) 0.015 (0.38) 0.040 (1.02) 0.065 (1.65) 0.066 (1.68) 0.128 (3.25) 0.100 (2.54) 0.010 (0.25) 7° NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 10: 22-pin PDIP Mechanical Outline: Order as part no. MX214P or MX224P
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. Variable Split Band Inverter 16 MX214/224 E B Y DA W C K J W T H Package Tolerances DIM. A B C D E F G H J K P T W Y MIN. TYP. MAX. 0.380 (9.61) 0.409 (10.40) 0.380 (9.61) 0.409 (10.40) 0.146 (3.70) 0.128 (3.25) 0.417 (10.60) 0.435 (11.05) 0.417 (10.60) 0.435 (11.05) 0.250 (6.35) 0.250 (6.35) 0.023 (0.58) 0.018 (0.45) 0.022 (0.55) 0.047 (1.19) 0.048 (1.22) 0.049 (1.24) 0.051 (1.30) 0.006 (0.152) 0.009 (0.22) 30° 45° 6° PIN 1 P G F NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 11: 24-pin PLCC Mechanical Outline: Order as part no. MX214LH or MX224LH
1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 Doc. # 20480112.002 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA All trademarks and service marks are held by their respective companies. CML Microcircuits COMMUNICATION SEMICONDUCTORS CML Product Data In the process of creating a more global image, the three standard product semiconductor companies of CML Microsystems Plc (Consumer Microcircuits Limited (UK), MX-COM, Inc (USA) and CML Microcircuits (Singapore) Pte Ltd) have undergone name changes and, whilst maintaining their separate new names (CML Microcircuits (UK) Ltd, CML Microcircuits (USA) Inc and CML Microcircuits (Singapore) Pte Ltd), now operate under the single title CML Microcircuits. These companies are all 100% owned operating companies of the CML Microsystems Plc Group and these changes are purely changes of name and do not change any underlying legal entities and hence will have no effect on any agreements or contacts currently in force. CML Microcircuits Product Prefix Codes Until the latter part of 1996, the differentiator between products manufactured and sold from MXCOM, Inc. and Consumer Microcircuits Limited were denoted by the prefixes MX and FX respectively. These products use the same silicon etc. and today still carry the same prefixes. In the latter part of 1996, both companies adopted the common prefix: CMX. This notification is relevant product information to which it is attached. CML Microcircuits (USA) [formerly MX-COM, Inc.] Product Textual Marking On CML Microcircuits (USA) products, the ‘MX-COM’ textual logo is being replaced by a ‘CML’ textual logo. Company contact information is as below: CML Microcircuits (UK)Ltd COMMUNICATION SEMICONDUCTORS CML Microcircuits (USA) Inc. COMMUNICATION SEMICONDUCTORS CML Microcircuits (Singapore)PteLtd COMMUNICATION SEMICONDUCTORS Oval Park, Langford, Maldon, Essex, CM9 6WG, England Tel: +44 (0)1621 875500 Fax: +44 (0)1621 875600 uk.sales@cmlmicro.com www.cmlmicro.com 4800 Bethania Station Road, Winston-Salem, NC 27105, USA Tel: +1 336 744 5050, 0800 638 5577 Fax: +1 336 744 5054 us.sales@cmlmicro.com www.cmlmicro.com No 2 Kallang Pudding Road, 09-05/ 06 Mactech Industrial Building, Singapore 349307 Tel: +65 7450426 Fax: +65 7452917 sg.sales@cmlmicro.com www.cmlmicro.com D/CML (D)/2 May 2002