V-Tec AT16/C5 Spécifications Page 36
- Page / 94
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Si2400
36 Rev. 1.3
6.5.7. Intermessage Timing
Intermessage timing is accomplished in three ways,
relative to the end of the previous message (“,” result
code), relative to the Kissoff Tone (“K” result code) or
relative to the Kissoff timeout (“^” result code).
If the intermessage timing is relative to the end of the
previous message (S36[3:2] [IDKT] = 10
b
or 11
b
), the
intermessage timer begins with the “,” result code. The
Si2400 sends an “N” to mark the time in which the
intermessage timer has timed out. If another message
is received prior to the “N”, the Si2400 keeps the
message and sends it to the receiver at the time the “N”
is sent.
If a message is not received within the time frame
defined by “,” and “N”, the Si2400 sends nothing, waits
for the next message and transmits the message as
soon as the host sends the message. This message
may not be accepted by the alarm receiver.
If the intermessage timing is relative to the end of the
Kissoff Tone, the timing begins when the “K” result code
is sent. In the event a kissoff tone was not detected, the
intermessage timing begins when the “^” is sent.
6.5.8. Returning to Command Mode
To return to command mode, the host sends any
character except the “~” and “!” characters. The
example here uses a <CR> to escape.
Once in command mode, all of the AT commands are
available.
ATH<CR> Is used to hang up the line. Note that it is
the responsibility of the host to hang up the
line.
!7xxx<CR> Sends the message xxx without dialing.
The message is sent as soon as the
Si2400 receives the <CR>. After this
message, it is again possible to send
subsequent messages using the “~” and “!”
commands shown above.
X1
Search for positive and negative acknowledge tones in
SIA half-duplex 300 bps mode. The Si2400 will respond
with “P” when a positive acknowledge is detected and
“N” when a negative acknowledge is detected.
X2
Return to online mode in SIA half-duplex mode as
transmitter.
X3
Return to online mode in SIA half-duplex mode as
receiver.
Figure 12. !7 Security Timing
S39 (CDT)
Before give up on
handshake
f = S38[1:0] (HF)
min.
min.
2nd Message
S36[1:0] (IT) = 0Xb
Interdigit
S36[1:0] (IT) = 1Xb
Interdigit
Handshake
Tone
Kissoff
Tone
S36[3:2] (IDKT)
Before Indicating lack
of Kissoff
1st
Digit
Last
Digit
1st
Digit
Last
Digit
S36[3:2] (IDKT) =
1Xb
Intermessage from end of previous
message to start of next message
Intradigit Timing
Pulse On = S36[5:4] (PON)
Pulse Off = S36[7:6] (POF)
Pulse freq = S38[6:5] (DCF)
S36[3:2] (IDKT) = 0Xb Intermessage
From end of Kissoff Tone
S38[7] (DBD)
S38[4:2] (HMT)
f = S38[6:5] (DCF)
S38[4:2] (HMT)
- Features 1
- Applications 1
- Description 1
- Functional Block Diagram 1
- 2 Rev. 1.3 2
- TABLE OF CONTENTS 3
- 1. Electrical Specifications 4
- Table 2. Loop Characteristics 5
- Table 3. DC Characteristics 6
- Table 4. DC Characteristics 6
- Table 5. AC Characteristics 7
- for K-Grade, T 8
- –40 to 85°C for B-Grade) 8
- = –40 to 85°C for B-Grade) 9
- 10 Rev. 1.3 10
- 3. Bill of Materials 11
- 12 Rev. 1.3 12
- 4. Analog Input/Output 13
- 5. Functional Description 14
- 5.1. Digital Interface 15
- 16 Rev. 1.3 16
- 5.3. Low Power Modes 17
- 5.4. Global DAA Operation 17
- 18 Rev. 1.3 18
- Rev. 1.3 19 19
- 20 Rev. 1.3 20
- 5.6. Loop Current Detection 21
- 5.7. Carrier Detect/Loss 21
- 5.8. Overcurrent Detection 21
- 5.11. PCM Data Mode 23
- Figure 10. Signal Routing 24
- 5.12. Analog Codec 25
- 5.14. V.42 HDLC Mode 26
- 5.15. Fast Connect 27
- Table 16. MCKR Configurations 28
- 6.1. Command Line Execution 29
- 30 Rev. 1.3 30
- 6.4. S-Register Control 31
- 32 Rev. 1.3 32
- 6.5.4. A1 34
- 6.5.5. !2 34
- 6.5.6. !7 34
- Table 19. !7 Parameters 35
- Figure 12. !7 Security Timing 36
- Progress 37
- S19 S1A S1B S16 S17 S18 38
- Table 23. DTMF 39
- 7.1. DSP Registers 40
- SE8 SE6 SE5 41
- DSP Reg. Addr 41
- 7.2. Call Progress Filters 42
- 8. S Registers 43
- 44 Rev. 1.3 44
- Rev. 1.3 45 45
- 46 Rev. 1.3 46
- Rev. 1.3 47 47
- 50 Rev. 1.3 50
- Rev. 1.3 51 51
- 52 Rev. 1.3 52
- Rev. 1.3 53 53
- 54 Rev. 1.3 54
- Rev. 1.3 55 55
- 56 Rev. 1.3 56
- 58 Rev. 1.3 58
- Kissoff Tone Detect Length) 58
- Rev. 1.3 59 59
- 60 Rev. 1.3 60
- Rev. 1.3 61 61
- 62 Rev. 1.3 62
- Rev. 1.3 63 63
- Rev. 1.3 65 65
- 66 Rev. 1.3 66
- Rev. 1.3 69 69
- 70 Rev. 1.3 70
- Rev. 1.3 71 71
- 72 Rev. 1.3 72
- Rev. 1.3 73 73
- 74 Rev. 1.3 74
- Rev. 1.3 75 75
- 76 Rev. 1.3 76
- Rev. 1.3 77 77
- DAA Isolation Barrier 78
- Emissions/Immunity 78
- DC Termination 79
- AC Termination 80
- Ringer Impedance 80
- DTMF Dialing 80
- Pulse Dialing 80
- Billing Tone Detection 80
- Symbol Value 81
- In-Circuit Testing 82
- Compliance Test Commands 83
- Introduction 84
- APPENDIX C—UL1950 3RD EDITION 85
- 9. Pin Descriptions: Si2400 86
- Rev. 1.3 87 87
- 10. Pin Descriptions: Si3015 88
- Receive Input 89
- Filter 2 89
- Pin # Pin Name Description 89
- 11. Ordering Guide 90
- Millimeters 91
- Revision 1.1 to Revision 1.2 92
- Revision 1.2 to Revision 1.3 92
- Rev. 1.3 93 93
- CONTACT INFORMATION 94
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