CMX605P3 CML Microcircuits, CMX605P3 Datasheet
CMX605P3
Available stocks
Related parts for CMX605P3
CMX605P3 Summary of contents
Page 1
D/605/6 July 2001 Features Pre-Programmed Tone Generators Fully Integrated DTMF Decoder/Encoder SPM Generator Simple Serial Control Interface 3.58MHz Xtal/Clock V23/Bell 202 FSK Generator Digital Ringing Voltage Generator 1.1 Brief Description The CMX605 is an integrated telecom tone generator and DTMF ...
Page 2
Digital Line to POTS Interface Section 1.1 Brief Description 1.2 Block Diagram 1.3 Signal List 1.4 External Components 1.5 General Description 1.5.1 Xtal Osc and Clock Dividers................................................... 7 1.5.2 Uncommitted Amplifier........................................................... 7 1.5.3 Tone/FSK Encoder and Tone Encoder .................................. 7 ...
Page 3
Digital Line to POTS Interface 1.2 Block Diagram 2001 Consumer Microcircuits Limited Figure 1 Block Diagram 3 CMX605 D/605/6 ...
Page 4
Digital Line to POTS Interface 1.3 Signal List CMX605 D4/P3 Pin No. Name XTALN 1 XTAL/CLOCK 2 SERCK 3 COMDATA 4 REPDATA 5 CSN 6 IRQN TONEFSK 9 SPM 10 2001 Consumer Microcircuits Limited Signal Type O/P ...
Page 5
Digital Line to POTS Interface CMX605 D4/P3 Pin No. Name V 11 BIAS RXIN 12 OPNIN 13 OPOUT 14 RING Notes: I/P = Input O/P = Output T/S = 3-state Output This device is capable of ...
Page 6
Digital Line to POTS Interface 1.4 External Components Figure 2 Recommended External Components R1 X1 Resistors ±5%, capacitors ±10% unless otherwise stated. 2001 Consumer Microcircuits Limited C1, C2 100k 3.579545 MHz C3 C4 CMX605 18pF 0.1µF 1.0µF D/605/6 ...
Page 7
Digital Line to POTS Interface 1.5 General Description The CMX605 is a telecom tone generator and DTMF tone encoder/decoder. It has separate output ports for the three different classes of signals encoded. These include Ringing signal, In-band tones or FSK ...
Page 8
Digital Line to POTS Interface Tone Field 0, MODE Register bit 1 and bit 0 = ‘0’ and ‘0’ respectively. TX TONES Register Bits 4 ...
Page 9
Digital Line to POTS Interface Tone Field 2, MODE Register bit 1 and bit 0 = ‘1’ and ‘0’ respectively TX TONES Register Bits 4 ...
Page 10
Digital Line to POTS Interface 1.5.4 SPM Generator This block operates independently and has its own output pin. It can transmit 12kHz or 16kHz and is controlled by bit 4 of the SETUP Register. Bit 7 of the MODE Register ...
Page 11
Digital Line to POTS Interface One Start bit (Space) Eight Data bits (D0-D7) from the TX DATA Register, with the lsb (D0) transmitted first One Stop bit (Mark) Failure to load the TX DATA Register with a new value when ...
Page 12
Digital Line to POTS Interface 1.5.7 DTMF Tone Decoder This block is enabled or disabled by bit 5 of the SETUP register. If disabled, bit 0 to bit 5 of the STATUS Register are set to ‘0’ and no interrupts ...
Page 13
Digital Line to POTS Interface 1.5.8 ‘C-BUS’ Interface This block provides for the transfer of data and control or status information between the CMX605’s internal registers and the µC over the ‘C-BUS’ serial bus. Each transaction consists of a single ...
Page 14
Digital Line to POTS Interface 1.5.9 ‘C-BUS’ Registers Write Only Registers Addr. Register 7 $01 RESET N/A $D0 SETUP Uncommitted Amplifier 0 = Disable 1 = Enable $D1 MODE SPM O/ Disable 1 = Enable $ ...
Page 15
Digital Line to POTS Interface 1.6 Application Notes When using the Tone/FSK bit (bit 6) of the MODE Register, each tone starts from V returns to V before ending: BIAS When switching between tones in the same column (bits 4 ...
Page 16
Digital Line to POTS Interface On Hook ‘CPE Alert Tones Single Tone (Hz) 375.2 404.3 468 495.8 520.6 548 562.8 578.4 1633 NYNEX (MRAA) - AMR Alert Tones (Single Tone) Group A (Hz) 252.4 268.7 285.3 315.5 330.5 375.2 Single ...
Page 17
Digital Line to POTS Interface Dual Frequency Call Progress Tones Additive Mixing (Hz) Off 350+440 440+480 480+620 400+425 400+450 425+450 425+480 120+620 150+450 Dual Tone Multi Frequency Generation (Hz) Off 941+1633 697+1209 697+1336 697+1477 770+1209 770+1336 770+1477 852+1209 852+1336 852+1477 ...
Page 18
Digital Line to POTS Interface CCITT ‘R1’ Signalling Tones (Hz) 700+900 700+1100 900+1100 700+1300 900+1300 1100+1300 700+1500 900+1500 1100+1500 1300+1500 700+1700 900+1700 1100+1700 1300+1700 1500+1700 CCITT ‘R2’ Signalling Tones Forward mode (Hz) Off 1380+1500 1380+1620 1500+1620 1380+1740 1500+1740 1620+1740 1380+1860 ...
Page 19
Digital Line to POTS Interface 1.6.2 C-BUS Timing The relationship between bytes loaded onto the C-BUS and the transmission of FSK bytes is shown diagrammatically in Figures 7a, 7b and 7c. There are many ways in which the C-BUS can ...
Page 20
Digital Line to POTS Interface Figure 7b SYNC mode after GENERAL RESET 2001 Consumer Microcircuits Limited 20 CMX605 D/605/6 ...
Page 21
Digital Line to POTS Interface Figure 7c SYNC mode after GENERAL RESET 2001 Consumer Microcircuits Limited (using alternative order of commands) 21 CMX605 D/605/6 ...
Page 22
Digital Line to POTS Interface 1.7 Performance Specification 1.7.1 Electrical Performance 1.7.1.1 Absolute Maximum Ratings Exceeding these maximum ratings can result in damage to the device. Supply ( Voltage on any pin ...
Page 23
Digital Line to POTS Interface 1.7.1.3 Operating Characteristics For the following conditions unless otherwise specified 2.7V at Tamb = 25°C and V DD Xtal Frequency = 3.579545MHz 0dBm corresponds to 775mVrms. DC Parameters I Zero-power mode DD OpAmp ...
Page 24
Digital Line to POTS Interface DTMF Decoder Valid input signal levels (each tone of composite signal) Not decode level (either tone of composite signal) Twist = High Tone/Low Tone Frequency Detect Bandwidth Input Impedance for RXIN (at 100Hz) Dial Tone ...
Page 25
Digital Line to POTS Interface ‘C-BUS’ Timings (See Figure 8) t CSN-Enable to Clock-High time CSE t Last Clock-High to CSN-High time CSH t Clock-Low to Reply Output enable time LOZ t CSN-High to Reply Output 3-state time HIZ t ...
Page 26
... Packaging Figure 9 16-pin SOIC (D4) Mechanical Outline: Order as part no. CMX605D4 Figure 10 16-pin DIL (P3) Mechanical Outline: Order as part no. CMX605P3 Handling precautions: This product includes input protection, however, precautions should be taken to prevent device damage from electro-static discharge. CML does not assume any responsibility for the use of any circuitry described. No IPR or circuit patent licences are implied ...
Page 27
... 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 circuits ...