Silicon Laboratories Si2415 Especificaciones Pagina 11
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AN93
Rev. 0.8 11
Figure 3. Typical Loop Voltage LVCS Transfer Function
Figure 4. Typical Loop Current LVCS Transfer Function
Table 4. Loop Current Transfer Function
LVCS[4:0] Condition
00000 Insufficient line current for normal
operation. Use the DOD bit (Register 19,
bit 1) to determine if a line is still
connected.
00001 Minimum line current for normal operation.
11111 Loop current is excessive (overload).
Overload > 140 mA in all modes except
CTR21.
Overload > 56 mA in CTR21 mode.
0 3 6 9 12 15 18 21 24 30 33 36 39 42 4548 51 54 57 60 63 66 69
72
140
75 78 81 84 87 90 93
Loop Current
(mA)
LVCS
BITS
27
Overload
0
5
10
15
20
25
30
CTR21
- Introduction 1
- Section Page 2
- Rev. 0.8 3 3
- 4 Rev. 0.8 4
- Hardware Design Reference 5
- Modulations and Protocols 5
- Table 3. Carriers and Tones 6
- Modem and DAA Operation 7
- Modem (System-Side) Device 7
- Crystal Oscillator 7
- 8 Rev. 0.8 8
- Rev. 0.8 9 9
- Ringer Network 10
- Legacy Mode 10
- Rev. 0.8 11 11
- LVCS[4:0] Condition 11
- Hookswitch and DCTermination 12
- DC Termination 12
- AC Termination 13
- Billing Tone Detection 13
- PCM Interface 14
- Typical Application Schematic 15
- Analog Output 17
- Software Design Reference 18
- Controller 19
- 20 Rev. 0.8 20
- Legacy Synchronous DCE Mode 21
- 22 Rev. 0.8 22
- V.80 Mode 23
- 24 Rev. 0.8 24
- Rev. 0.8 25 25
- AT Command Set 26
- Rev. 0.8 27 27
- 28 Rev. 0.8 28
- Rev. 0.8 29 29
- 30 Rev. 0.8 30
- Rev. 0.8 31 31
- 32 Rev. 0.8 32
- Rev. 0.8 33 33
- 34 Rev. 0.8 34
- 36 Rev. 0.8 36
- Rev. 0.8 37 37
- 38 Rev. 0.8 38
- Extended AT Commands 39
- 40 Rev. 0.8 40
- Rev. 0.8 41 41
- 42 Rev. 0.8 42
- Rev. 0.8 43 43
- Table 24. Result Codes 47
- Table 25. Disconnect Codes 50
- Escape Methods 51
- Reset/Default Settings 52
- Firmware Upgrades 54
- EEPROM Interface 54
- Si2457/34/15/04 55
- Table 29. EEPROM Timing 56
- Detailed EEPROM Examples 57
- Table 30. Combination Example 58
- Table 31. ASCII Chart 59
- S-Registers 60
- Rev. 0.8 61 61
- 62 Rev. 0.8 62
- U-Registers 63
- 64 Rev. 0.8 64
- Rev. 0.8 65 65
- 66 Rev. 0.8 66
- Rev. 0.8 67 67
- 1. See 67
- 2. See Table 82 for details 67
- 68 Rev. 0.8 68
- Rev. 0.8 69 69
- 70 Rev. 0.8 70
- Table 37. BPF Biquad Values 71
- Figure 15. Cadence Timing 73
- 74 Rev. 0.8 74
- Table 41. DTMF Dial Registers 75
- 76 Rev. 0.8 76
- Rev. 0.8 77 77
- Table 48. U53 Bit Map 78
- Table 49. U54 Bit Map 78
- Table 50. U62 Bit Map 78
- Table 51. U63 Bit Map 79
- Table 52. U65 Bit Map 79
- Table 53. U66 Bit Map 80
- Table 54. U67 Bit Map 81
- Table 55. U68 Bit Map 82
- Table 56. U6A Bit Map 82
- Table 57. U6C Bit Map 83
- Table 58. U6E Bit Map 83
- Table 59. U6F Bit Map 83
- Table 60. U70 Bit Map 84
- Rev. 0.8 85 85
- Table 61. U76 Bit Map 86
- Table 62. U77 Bit Map 87
- Table 63. U78 Bit Map 87
- Table 64. Monitor Mode Values 88
- Table 65. U79 Bit Map 88
- Rev. 0.8 89 89
- 90 Rev. 0.8 90
- Rev. 0.8 91 91
- Digital Interface 92
- 796 Words 93
- 128 Words 93
- 1024 Word Elastic Rx Buffer 93
- 94 Rev. 0.8 94
- Parallel Interface 95
- Interface Mode 96
- Rev. 0.8 97 97
- Figure 20. Parallel Interface 98
- Programming Examples 99
- 100 Rev. 0.8 100
- *Note: Si2493 only 100
- PCM/Voice Mode 101
- 102 Rev. 0.8 102
- Table 76. Voice Commands 103
- Voice Mode Example 104
- SMS Support 105
- Table 80. MDMF Parameters 106
- Table 81. SAS Tone Frequency 107
- 108 Rev. 0.8 108
- Rev. 0.8 109 109
- 110 Rev. 0.8 110
- Rev. 0.8 111 111
- 112 Rev. 0.8 112
- Rev. 0.8 113 113
- 114 Rev. 0.8 114
- Rev. 0.8 115 115
- 116 Rev. 0.8 116
- Modem On Hold 117
- V.92 Quick Connect 118
- Self Test 119
- Board Test 119
- Test Connection 120
- Compliance Testing 121
- Table 89. Symbol/Data Rate 122
- 1000 Ω @ 100 MHz, 200 mA 123
- Country Dependent Setup 124
- Blacklisting 124
- Caller ID 124
- Table 92. Japan Caller ID 125
- Table 94. Dial Registers 126
- Country Configuration Tables 127
- Country Setting Update 127
- 130 Rev. 0.8 130
- Rev. 0.8 131 131
- 132 Rev. 0.8 132
- Rev. 0.8 133 133
- 134 Rev. 0.8 134
- Rev. 0.8 135 135
- 136 Rev. 0.8 136
- Rev. 0.8 137 137
- 138 Rev. 0.8 138
- Rev. 0.8 139 139
- 140 Rev. 0.8 140
- Rev. 0.8 141 141
- 142 Rev. 0.8 142
- Rev. 0.8 143 143
- 144 Rev. 0.8 144
- Rev. 0.8 145 145
- 146 Rev. 0.8 146
- Rev. 0.8 147 147
- Overcurrent Detection Example 148
- Pulse/Tone Dial Decision 148
- Detection 149
- Telephone Voting Mode 149
- Table 100. Bit Errors 150
- UIDELINES 154
- Traces, pad sites and vias 155
- Table 101. Layout Check List 156
- Rev. 0.8 157 157
- Module Design and Application 158
- Considerations 158
- ROTOTYPE 159
- 160 Rev. 0.8 160
- Rev. 0.8 161 161
- 162 Rev. 0.8 162
- Off-Hook 163
- Diode Checker 164
- Rev. 0.8 165 165
- 166 Rev. 0.8 166
- Rev. 0.8 167 167
- 168 Rev. 0.8 168
- Rev. 0.8 169 169
- Document Change List 170
- Rev. 0.8 171 171
- Contact Information 172
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