V-Tec AT16/C5 Spezifikationen Seite 87
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Si2400
Rev. 1.3 87
10
GPIO4
General Purpose Input/Output 4.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the ALERT pin.
Default is digital in. When programmed as ALERT, this pin provides five functions.
While the modem is connected, it will normally be low, but will go high if the carrier is
lost, a wake-on ring (using the “ATZ” command) event is detected, a loss of loop cur-
rent event is detected, V.23 reversal is detected, or if an intrusion event has been
detected. The ALERT pin is sticky, and will stay high until the host clears it by writing
to the correct S register. (See register SE2[7:6].)
11
C1A
Isolation Capacitor 1A.
Connects to one side of the isolation capacitor C1.
12
GND
Ground.
Connects to the system digital ground.
13
ISOB
Bias Voltage.
This pin should be connected via the C3 capacitor.
14
GPIO3
General Purpose Input/Output 3.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the ESC pin.
Default is digital in. When programmed as ESC, a positive edge on this pin will cause
the modem to go from online (connected) mode to the offline (command) mode.
15
GPIO2
General Purpose Input/Output 2.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the TXD2 pin.
Default is digital in. The user can program this pin to function as TXD2 if the second-
ary serial interface is enabled. This pin is also used as the active low carrier detect pin
(CD
) if enabled via the CDE bit in (S0C.7).
16
GPIO1
General Purpose Input Output 1.
This pin can be either a GPIO pin (analog in, digital in, digital out) or the RXD2 pin.
Default is digital. The user can program this pin to function as RXD2 if the secondary
serial interface is enabled. This pin can also be programmed to function as the EOFR
(end of frame receive) signal for HDLC framing.
Pin # Pin Name Description
- 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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