DATA BULLETIN PCN/PCS DELTA MODULATION CODEC MX609 Features Applications Single Chip full Duplex CVSD CODEC On-chip Input and Output Filters Programmable Sampling Clocks 3- or 4-bit Companding Algorithm Powersave Capabilities Low Power, 5.0V Operation Digital PCN/PCS Systems Digital Cordless Phones Digital Delay Lines Digital Voice Storage Multiplexers, Switches, and Phones Time Domain Scramblers DATA ENABLE ENCODER FORCE IDLE* ENCODER INPUT MOD VDD VSS f1 XTAL/CLOCK ENCODER OUTPUT f2 f0 XTAL CLOCK RATE GENERATORS ENCODER DATA CLOCK DECODER DATA CLOCK VBIAS MODE 1 CLOCK MODE LOGIC MODE 2 ALGORITHM SAMPLING RATE CONTROL f3 POWERSAVE DECODER INPUT 3 or 4 BIT f1 DECODER OUTPUT DEMOD DECODER FORCE IDLE* *Available on J,P & LH package styles only The MX609 is a Continuously Variable Slope Delta Modulation (CVSD) Codec designed for use in cordless telephones. The device is suitable for applications in delta multiplexers, switches and phones. Encoder input and decoder output switched capacitor filters are incorporated on-chip. Sampling clock rates can be programmed to 16, 32 or 64K bits/second from an internal clock generator or externally injected in the 8 to 64K bits/second range. The internal clocks are derived from an on-chip reference oscillator driven by an externally connected crystal. The sampling clock frequency is output for the synchronization of external circuits. The encoder has an enable function for use in multiplexer applications. When not enabled the encoder output remains in a high-impedance “tri-state” mode. Companding circuits may be operated with an externally selectable 3- or 4-bit algorithm. The device may be put in standby mode when Powersave is selected. The MX609 operates with a supply voltage of 5.0V and is available in the following packages: 24-pin PLCC (MX609LH), 16-pin SOIC (MX609DW), 22-pin CERDIP (MX609J), and 22-pin PDIP (MX609P). 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 20480069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 2 MX609 CONTENTS Section Page 1 Block Diagram................................................................................................................ 3 2 Signal List....................................................................................................................... 4 3 External Components.................................................................................................... 6 4 General Description....................................................................................................... 6 5 Application ..................................................................................................................... 7 5.1 5.2 CODEC Integration.............................................................................................................. 7 CODEC Performance .......................................................................................................... 7 6 Performance Specification............................................................................................ 9 6.1 6.2 Electrical Performance ........................................................................................................ 9 6.1.1 Absolute Maximum Ratings.................................................................................................... 9 6.1.2 Operating Limits ..................................................................................................................... 9 6.1.3 Operating Characteristics..................................................................................................... 10 6.1.4 TIMING................................................................................................................................. 11 Packaging.......................................................................................................................... 12 MX-COM, Inc. reserves the right to change specifications at any time and without notice. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 3 MX609 1 Block Diagram DATA ENABLE ENCODER FORCE IDLE* ENCODER INPUT MOD VDD VSS f1 XTAL/CLOCK f2 f0 XTAL CLOCK RATE GENERATORS ENCODER DATA CLOCK DECODER DATA CLOCK VBIAS MODE 1 MODE 2 CLOCK MODE LOGIC ALGORITHM POWERSAVE ENCODER OUTPUT SAMPLING RATE CONTROL 3 or 4 BIT f3 DECODER INPUT f1 DECODER OUTPUT DEMOD DECODER FORCE IDLE* *Available on J,P & LH package styles only Figure 1: Block Diagram 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 4 MX609 2 Signal List 1 1 1 Xtal/Clock input 2 2 3 2 Xtal output 3 4 4 5 3 N/C Encoder Data Clock input/ output 5 6 4 Encoder Output output 6 7 - Encoder Force Idle 7 8 5 Data Enable 8 9 9 10 6 N/C Bias 10 11 7 Encoder Input input 11 12 13 12 13 14 8 9 VSS N/C Decoder Output power 14 15 15 16 10 16 17 18 - 17 19 11 Decoder Input 18 20 12 Decoder Data Clock 19 21 13 Algorithm Input to the clock oscillator inverter. A 1.024MHz Xtal input or externally derived clock is injected here. See Clock Mode pins and figure 3. N/C input output N/C 1998 MX-COM, Inc. Powersave Decoder Force Idle input/ output The 1.024 MHz output of the clock oscillator inverter. No Connection A logic I/O port. External encode clock input or internal data clock output. Clock frequency is dependent upon Clock Mode 1, 2 inputs and Xtal frequency (see Clock Mode pins). The encoder digital output. This is a three-state output whose condition is set by the Data Enable and Powersave inputs. See Table 2: When this pin is at a logical “0” the encoder is forced to an idle state and the encoder digital output is 0101, a perfect idle pattern. When this pin is a logical “1” the encoder encodes as normal. Internal 1M pullup. Data is made available at the encoder output pin by control of this input. See Encoder Output pin. Internal 1 M pullup. No Connection Normally at VDD/2 bias, this pin should be externally decoupled by capacitor C4. Internally pulled to VSS when “ Powersave ” is a logical “0”. The analog signal input. Internally biased at VDD/2, this input requires an external coupling capacitor. The source impedance should be less than 100. Output channel noise levels will improve with an even lower source impedance. See Figure 3. Negative Supply No Connection The recovered analog signal is output at this pin. It is the buffered output of a lowpass filter and requires external components. During “Powersave” this output is open circuit. No Connection A logic “0” at this pin puts most parts of the codec into a quiescent non-operational state. When at a logical “1”, the codec operates normally. Internal 1 M pullup. No Connection A logic “0” at this pin gates a 0101... pattern internally to the decoder so that the Decoder Output goes to VDD/2. When this pin is a logical “1” the decoder operates as normal. Internal 1M pullup. The received digital signal input. Internal 1 M pullup. A logic I/O port. External decode clock input or internal data clock output, dependent upon clock mode 1,2 inputs. See Clock Mode pins. A logic “1” at this pin sets this device for a 3-bit companding algorithm. A logical “0” sets a 4-bit companding algorithm. Internal 1 M pullup. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 20 21 22 23 14 15 Clock Mode 2 Clock Mode 1 22 24 16 VDD 5 power MX609 Clock rates refer to f = 1024MHz Xtal/Clock input. During internal operation the data clock frequencies are available at the ports for external circuit synchronization. Independent or common data rate inputs to Encode and Decode data clock ports may be employed in the External Clocks mode. Internal 1M pullups. Positive Supply. A single 5.0V supply is required. Table 1: Signal List Data Enable Powersave Encoder Output 1 1 Enable 0 1 High Z (open circuit) 1 0 VSS Table 2: Encoder Output Clock Mode 1 Clock Mode 2 Facility 0 0 External Clocks 0 1 Internal, 64kbps = f/16 1 0 Internal, 32kbps = f/32 1 1 Internal, 16kbps = f/64 Table 3: Clock Mode 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 6 MX609 3 External Components VDD XTAL/CLOCK R1 X1 C2 C1 XTAL ENCODER DATA CLOCK ä ENCODER OUTPUT ä DATA ENABLE BIAS ENCODER INPUT C3 VSS 1 16 2 15 3 14 4 5 MX609DW 13 12 6 11 7 10 8 9 VDD CLOCK MODE 1 CLOCK MODE 2 ALGORITHM DECODER DATA CLOCK DECODER INPUT POWERSAVE DECODER OUTPUT C5 C4 Figure 2: Recommended External Components for Typical Application 10% C4 Note 4 1.0F 20% Note 2 1M 33pF 20% C5 Note 5 Note 2 68pF 20% X1 Note 6, 7 1.0F 1.024MHz 20% C2 C3 Note 3 1.0F 20% R1 Note 1 C1 Table 4: Recommended External Components for Typical Application Notes: 1. Oscillator inverter bias resister 2. Xtal circuit load capacitor 3. Encoder input coupling capacitor. The drive source impedance to this input should be less than 100W. Output idle channel noise levels will improve with even lower source impedance. 4. Bias decoupling capacitor 5. VDD decoupling capacitor 6. A 1.024MHz Xtal/Clock input will yield exactly 16/32/64kbps data clock rates. Xtal circuitry shown is in accordance with MX-COM’s Xtal Oscillator Application Note. 7. 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, please consult you crystal manufacturer. 4 General Description The MX609 is a Continuously Variable Slope Delta Modulation (CVSD) Codec designed for use in cordless telephones. The device is suitable for applications in delta multiplexers, switches and phones. Encoder input and decoder output switched capacitor filters are incorporated on-chip. Sampling clock rates can be programmed to 16, 32 or 64K bits/second from an internal clock generator or externally injected in the 8 to 64K bits/second range. The internal clocks are derived from an on-chip reference oscillator driven by an externally connected crystal. The sampling clock frequency is output for the synchronization of external circuits. The encoder has an enable function for use in multiplexer applications. When not enabled the encoder output remains in a high-impedance “tri-state” mode. Companding circuits may be operated with an externally selectable 3- or 4-bit algorithm. The device may be put in standby mode when Powersave is selected. 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 7 MX609 5 Application 5.1 CODEC Integration MX609 PARAMETERS MEASURED HERE ANALOG INPUT INTERFACE (BALUN & BUFFER) INPUT MX609 PARAMETERS MEASURED HERE REGULATED POWER SUPPLY MX609 ENCODER ANALOG OUTPUT INTERFACE (BALUN & BUFFER) MX609 DECODER CLOCK MODE 16/32/64 KB/S DATA CLOCKS OUTPUT DATA CLOCKS 1.024MHz 1.024MHz SYNCHRONOUS CLOCK AND DATA SYSTEM Figure 3: System Configuration using the MX609 5.2 CODEC Performance Output Gain 0 Input Xtal VDD Data -10 -20 dB Level = -20dB = 1.024MHz = 5V Clocks = 32kb/s -30 -40 -50 0 1 2 3 4 5 6 7 8 Frequency (kHz) Figure 4: Typical CODEC Frequency Response 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 8 MX609 Input Level = -20dB 35 30 64kb/s 25 20 S/N (dB) 32kb/s 15 10 16kb/s 5 500 1000 1500 2000 2500 3000 3500 Frequency (Hz) Figure 5: Typical S/N Ratio with Input Frequency Sample Rate = 32 kb/s Ref: 0dB Input Level = 489mVrms ∆ Gain (dB) 5 0 -5 ref. -50 -40 -30 -20 -10 0 10 Input Level (dB) Figure 6: Typical Variation of Gain with Input Level 35 Ref: 0dB Input Level = 489mVrms Input Frequency = 820 Hz 30 S/N (dB) 64 kb/s 32 kb/s 20 16 kb/s ref. 10 -40 -30 -20 -10 0 Input Level (dB) Figure 7: Typical S/N Ratio with Input Level 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 9 MX609 6 Performance Specification 6.1 6.1.1 Electrical Performance Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the device. Supply (VDD - VSS) Voltage on any pin to VSS Current VDD VSS any other pin J / P / LH / DW Packages Total Allowable Power Dissipation at TAMB = 25°C Derating above 25°C Storage Temperature Operating Temperature 6.1.2 Min. -0.3 -0.3 Max. 7.0 VDD + 0.3 Units V V -30 -30 -20 30 30 20 mA mA mA -40 -40 800 10 85 85 mW mW/°C above 25°C °C °C Operating Limits Correct operation of the device outside these limits is not implied. Supply (VDD - VSS) Operating Temperature Xtal Frequency 1998 MX-COM, Inc. Min 4.5 -30 500 Typ. 5.0 1.024 Max. 5.5 70 1500 www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Units V °C MHz Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 6.1.3 10 MX609 Operating Characteristics For the following conditions unless otherwise specified: VDD = 5.0V at TAMB = 25°C, Audio Test Frequency = 820Hz Xtal/Clock f0 = 1.024MHz Sample Clock Rate = 32kbps, Audio level 0dB ref (0 dBm0) = 489mVRMS. Static Values Supply Voltage Supply Current (Enabled) Supply Current (Powersave) Note s Min. Typ. Max. Units 1 4.5 5.0 3.5 500 5.5 V mA Input logic ‘1’ Input Logic ‘0’ Output Logic ‘1’ Output Logic ‘0’ Digital input Impedance Logic I/O pins Logic Input pins, Pullup Resistor 3.5 1.5 4.0 1.0 10 2 A V V V V M 300 k Digital output impedance 4 k Analog Input Impedance 100 k 800 4 0 A dB Analog Output Impedance 6 Three State Output Leakage Insertion Loss Dynamic Values Encoder Analog signal Input levels Principal Integrator Frequency Encoder passband Compand Time Constant Decoder Analog Signal Output Levels Decoder Passband Encoder Decoder (Full Codec) Passband Stopband Stopband Attenuation Passband Gain Passband Ripple Output Noise (Input Short Circuit) Perfect Idle Channel Noise (Encode Forced) Group Delay Distrotion (1000Hz-2600Hz) 2 1 6 -30 8 dB Hz Hz ms 8 dB Hz 3400 10 -60 Hz KHz dB dB dB dB -63 dB 275 3400 4 6 3 -30 0 3400 300 6 60 0 -3 7 4 3 450 s (600Hz-2800Hz) 750 s (500Hz-3000Hz) 1.5 s kHz Xtal/clock Frequency 1998 MX-COM, Inc. 500 1024 www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA 1500 Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 11 MX609 Notes: 1. Dynamic characteristics specified at 5.0V only. 2. All logic inputs except Encoder and Decoder Data clocks 3. With passband gain of 1dB. 4. Group Delay Distortion for the full codec is relative to the delay with and 820Hz, -20dB signal at the encoder input 5. Relative timings are shown in figure 4 6. Recommended values 7. Forced idle Encode/Decode not available on DW package. 6.1.4 TIMING Serial Bus Timings (See Figure 8) tCH Clock 1 pulse width tCL Clock 0 pulse width tIR tIF tSU tH tSU +tH Clock rise time Clock fall time Data set-up time Data hold time Data true time Min. 1.0 Typ. Max. s 1.0 0 100 100 450 600 1.5 tPCO Clock to output delay time tDR Data rise time tDF Data fall time Xtal input frequency = 1.024MHz Units 750 100 100 s ns ns ns ns s ns ns ns ENCODER TIMING ENCODER CLOCK tCH tCH tCL t IR tIF DATA CLOCKED ENCODER DATA OUTPUT tPCO DECODER TIMING DECODER CLOCK DATA CLOCKED DECODER DATA INPUT tSU tH DATA TRUE TIME ENCODER OUTPUT MULTIPLEXING FUNCTION HIGH Z HIGH Z tDR t DF DATA ENABLE Figure 8: Serial Bus Timing 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 6.2 12 MX609 Packaging Package Tolerances A Z ALTERNATIVE PIN LOCATION MARKING B E W L T PIN 1 X Y C H K P J DIM. MIN. TYP. MAX. 0.413 (10.49) 0.395 (10.03) 0.299 (7.59) 0.286 (7.26) 0.093 (2.36) 0.105 (2.67) 0.390 (9.90) 0.419 (10.64) 0.003 (0.08) 0.020 (0.51) 0.013 (0.33) 0.020 (0.51) 0.041 (1.04) 0.016 (0.41) 0.050 (1.27) 0.050 (1.27) 0.009 (0.23) 0.0125 (0.32) 45° 0° 10° 5° 7° 5° A B C E H J K L P T W X Y Z NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 9: 16-pin SOIC (DW) Mechanical Outline: Order as part no. MX609DW E B C Package Tolerances K Y DA W J W T PIN 1 P G H DIM. A B C D E F G H J K P T W Y MIN. TYP. MAX. 0.409 (10.40) 0.380 (9.61) 0.409 (10.40) 0.380 (9.61) 0.146 (3.70) 0.128 (3.25) 0.435 (11.05) 0.417 (10.60) 0.435 (11.05) 0.417 (10.60) 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) 0.051 (1.30) 0.049 (1.24) 0.009 (0.22) 0.006 (0.152) 30° 45° 6° NOTE : All dimensions in inches (mm.) Angles are in degrees F Figure 10: 24-pin PLCC (LH) Mechanical Outline: Order as part no. MX609LH 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 All Trademarks and service marks are held by their respective companies. PCN/PCS Delta Modulation CODEC 13 MX609 Package Tolerances A B E1 DIM. A B C E E1 H J J1 K L P T Y E Y T PIN 1 K C H L J J1 MIN. TYP. MAX. 1.100 (27.94) 0.360 (9.14) 1.080 (27.43) 0.330 (8.38) 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) 0.015 (0.38) 0.020 (0.51) 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 P Figure 11: 22-pin PDIP (P) Mechanical Outline: Order as part no. MX609P Package Tolerances A B E1 E T PIN1 K K1 C H L J J1 P F 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) 0.165 (4.19) 0.230 (5.84) 0.466 (11.84) 0.515 (13.08) 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) 0.115 (2.92) 0.171 (4.34) 0.100 (2.54) 0.0098 (0.249) 0.0102 (0.259) NOTE : All dimensions in inches (mm.) Angles are in degrees Figure 12: 22-pin CERDIP (J) Mechanical Outline: Order as part no. MX609J 1998 MX-COM, Inc. www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054 4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA Doc. # 204800069.005 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 CML Microcircuits (USA) Inc. CML Microcircuits (Singapore)PteLtd COMMUNICATION SEMICONDUCTORS COMMUNICATION SEMICONDUCTORS COMMUNICATION SEMICONDUCTORS Oval Park, Langford, Maldon, Essex, CM9 6WG, England Tel: +44 (0)1621 875500 Fax: +44 (0)1621 875600 [email protected] 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 [email protected] www.cmlmicro.com No 2 Kallang Pudding Road, 09-05/ 06 Mactech Industrial Building, Singapore 349307 Tel: +65 7450426 Fax: +65 7452917 [email protected] www.cmlmicro.com D/CML (D)/2 May 2002