TS7514提供了在V.23标准应用中典型应用方案

1 INTRODUCTION.............. . . 1
2 PROGRAMMABLE MODE............ . . 3
2.1 WITH WHAT TO PROGRAM?........... 3
2.2 HOW TO PROGRAM?............ . . 4
2.3 TIMING DIAGRAMS.............4
3 THE TS7514 REGISTERS...........5
3.1 MODE REGISTER : RPROG........... . 5
3.2 D.T.M.F. REGISTER : RDTMF...........5
3.3 TRANSMIT ATTENUATION REGISTER : RATTE....... . 5
3.4 LINE MONITORING REGISTER : RWLO.........5
3.5 TRANSMIT FILTER REGISTER : RPTF.......... 5
3.6 RECEIVE FILTER REGISTER : RPRF.......... . 6
3.7 DETECTION LEVEL AND HYSTERESIS REGISTER : RHCD....6
3.8 RECEIVE CHANNEL REGISTER : RPRX........6
4 THE 4/2 WIRE CONVERSION : THE HYBRID.......6
5 THE D.T.M.F. DIALING............ . 6
6 RING DETECTION............. . 6
7 TONE TRANSMISSION AND DETECTION......... . 8
7.1 2100Hz TRANSMISSION............ 8
7.2 2100Hz DETECTION............8
7.3 LOW FREQUENCY TONE DETECTION......... 8
8 LINE MONITORING............. 9
9 OTHER FEATURES............. 9
10 CONCLUSION.............. 9