CMX850 データシートの表示（PDF） - CML Microsystems Plc
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CMX850 Datasheet PDF : 103 Pages
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Communications Controller
CMX850
1.5.11 Watchdog Timer.................................................................... 47
1.5.11.1
Watchdog Control Register (WDTCON) ....... 47
1.5.11.2
Watchdog Load Register (WDTLD) .............. 49
1.5.12 Real Time Clock .................................................................... 49
1.5.12.1
RTC Control Register (RTCCON) ................. 49
1.5.12.2
RTC Time Registers (TIME0-TIME3)............. 50
1.5.12.3
RTC Alarm Registers (ALM0-ALM3) ............. 51
1.5.13 CAS Tone and FSK Detector for CLI/CIDCW ....................... 53
1.5.13.1
CAS Tone Detector........................................ 53
1.5.13.2
FSK Detector ................................................. 53
1.5.13.3
FSK Demodulator.......................................... 54
1.5.13.4
Detect Control Register (CASDET)............... 54
1.5.13.5
FSK Buffer Register (FSKBUF)..................... 56
1.5.13.6
Example of Using the Detector for Off Hook operations
56
1.5.14 8051 Accumulator, Flags and Stack Pointer........................ 58
1.5.14.1
Accumulator Registers (A,B) ........................ 58
1.5.14.2
Program Status Word Register (PSW) ......... 58
1.5.14.3
Stack Point Register (SP) ............................ 59
1.5.15 Timers and Serial Port .......................................................... 60
1.5.15.1
Timer/Counter Control Register (TCON)..... 60
1.5.15.2
Timer/Counter Mode Register (TMOD)........ 61
1.5.15.3
Timer/Counter Registers (TL0 TL1 TH0 TH1)62
1.5.15.4
Serial Port Control Register (SCON) ........... 62
1.5.15.5
Serial Port Buffer Register (SBUF).............. 63
1.6 Modem General Description ............................................................. 64
1.6.1 Tx USART .............................................................................. 66
1.6.2 FSK and QAM/DPSK Modulators ......................................... 67
1.6.3 Tx Filter and Equaliser.......................................................... 68
1.6.4 DTMF/Tone Generator .......................................................... 68
1.6.5 Tx Level Control and Output Drivers ................................... 68
1.6.6 DTMF Decoder and Tone Detectors..................................... 69
1.6.7 Rx Modem Filterering and Demodulation............................ 70
1.6.8 Rx Modem Pattern Detectors and Descrambler .................. 71
1.6.9 Rx Data Register and USART ............................................... 71
1.6.10 Analogue Signal Routing...................................................... 73
1.6.11 'C-BUS' Interface ................................................................... 73
1.6.11.1
General Reset Command.............................. 73
1.6.11.2
General Control Register .............................. 74
1.6.11.3
Transmit Mode Register ............................... 76
1.6.11.4
Receive Mode Register ................................. 80
1.6.11.5
Tx Data Register............................................ 82
1.6.11.6
Rx Data Register............................................ 82
1.6.11.7
Analogue Signal Path Register .................... 82
1.6.11.8
Status Register.............................................. 84
1.6.11.9
Status Register.............................................. 87
1.6.11.10
Programming Register.................................. 88
1.6.11.11
Other Registers ............................................. 90
© 2003 CML Microsystems Plc
3
D/850/6
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