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PDF ( 数据手册 , 数据表 ) N682386

零件编号 N682386
描述 Dual Programmable Extended Codec/SLCC + SLFC
制造商 nuvoton
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N682386 数据手册, 描述, 功能
N682386/87 + N681622
Dual Programmable Extended Codec/SLCC + SLFC
1. DESCRIPTION
The N682386/87, implements a dual channel FXS telephone line interface optimized for short loop applications. It
integrates SLCC (Subscriber Line Control Circuit) functionality with a dual programmable CODEC and a dual DC/DC
controller. The SLCC supports internal ringing up to 90 VPK (5 REN at 4k ft) ideal for Customer Premise Equipment
(CPE). The CODEC can be configured for μ-law, A-law or 16-bit linear PCM encoding. It also supports a
comprehensive set of signaling capabilities required to supervise and control the telephone lines. These include tone
generation, ring tones, DTMF detection/ generation as well as FSK generation. An on-chip Pulse Width Modulation
(PWM) driver allows control of an inductor based DC/DC converter. Programmable impedance and trans-hybrid
balancing allow for worldwide deployment.
2. FEATURES
¡ Complete BORSCHT functions
¡ Internal balanced and unbalanced ringing up to 90
VPK (5 REN up to 4k ft)
¡ Integrated Power Management Options
ƒ Integrated DC/DC controller regulates battery
voltage to minimize power dissipation in all
operating modes
ƒ Programmable external battery switching
¡ Programmable linefeed characteristics
ƒ Ringing Frequency, Amplitude, and Cadence
ƒ Trapezoidal and Sinusoidal waveforms
ƒ Two wire AC impedance, and trans-hybrid
balance
ƒ Constant Current feed (20 to 41) mA
ƒ Ring Trip and Loop Closure Thresholds
ƒ Ground Key Detection
¡ Programmable signal generation and detection
ƒ DTMF generation/ detection and Tone
generation
ƒ Frequency Shift Keying (FSK) Enhanced Caller
ID generation (Type I and Type II)
¡ Loop test and diagnostics support
ƒ Integrated loopback modes
ƒ Real-time linefeed monitoring
ƒ On-chip temperature sensor
ƒ Line Card Diagnostics Support
¡ Digital interfaces
ƒ PCM: G.711 μ-Law, A-Law and 16-bit linear
ƒ GCI and SPI bus
ƒ Programmable audio path gains
¡ Both PCM Master and Slave modes supported
¡ On-chip PLL for flexible clocking options including
1.0 MHz and 2.0 MHz BCLK operation
¡ Operating voltage: 3.3V
¡ Narrowband Codec (N682386)
¡ Wideband and Narrowband codec (N682387)
¡ Optional integrated (N681622) or discrete
Subscriber Line Feed Circuit
APPLICATIONS
¡ Residential VoIP Gateways / Routers/ IP-PBX
¡ Fiber to the Premise/Home (FTTP/H)
¡ Wireless Local Loop
¡ Optical Network Terminals (ONT)
¡ Analog Telephone Adapter (ATA)
¡ Voice enabled DSL/Cable Modems
¡ Integrated Access Devices
¡ Set Top Boxes
Ordering Information
Part Number
N682386MG
N682387MG
N682386YG
N682387YG
Temp
Range (oC)
-40 to 85
-40 to 85
Package
64-TQFP
64-QFN..
Package
Material
Pb-Free
Pb-Free
N681622YG -40 to 85
U.S. Patent # 7260212 B1
20-QFN
Pb-Free
! WARNING !
HIGH VOLTAGE WARNING USE EXTREME CAUTION
High voltage sources could cause serious injury or
death if not used in accordance with design and/or user
specifications, if they are used by untrained or
unqualified personnel. Before testing Nuvoton’s products
read and understand all instructions, and safety
procedures as in industry standard safe practices.
Revision 1.3
Page 1 of 160
Sep 2010







N682386 pdf, 数据表
N682386/87 + N681622
Dual Programmable Extended Codec/SLCC + SLFC
12.1.1.2.  OPERATION MODES ..............................................................................................................................28 
12.1.1.3.  AUTOMATIC TRANSITIONS ...................................................................................................................28 
12.1.1.3.1.  POWER ALARM AUTOMATIC REACT ...................................................................................................28 
12.1.1.3.2.  SETTING RING AUTOMATIC ..................................................................................................................28 
12.1.1.3.3.  SETTING LOOP CLOSURE DETECT AUTOMATIC REACT ..................................................................29 
12.1.1.4.  POLARITY REVERSAL............................................................................................................................31 
12.1.1.4.1.  HARD POLARITY REVERSAL ................................................................................................................31 
12.1.1.4.2.  SOFT POLARITY REVERSAL .................................................................................................................31 
12.1.1.5.  WINK FUNCTION POLARITY REVERSAL..............................................................................................32 
12.1.2.  OVER-VOLTAGE PROTECTION.............................................................................................................32 
12.1.2.1.  THERMAL OVERLOAD ...........................................................................................................................33 
12.1.2.2.  TEMPERATURE MONITOR ....................................................................................................................34 
12.1.3.  RINGING ..................................................................................................................................................35 
12.1.3.1.  TONE GENERATION...............................................................................................................................35 
12.1.3.2.  RING SIGNAL GENERATION..................................................................................................................38 
12.1.3.2.1.  SINUSOIDAL RINGING ...........................................................................................................................40 
12.1.3.2.2.  TRAPEZOIDAL RINGING ........................................................................................................................41 
12.1.3.2.3.  RINGING DC OFFSET AND COMMON MODE BIAS..............................................................................42 
12.1.3.2.4.  LINEFEED CONSIDERATIONS DURING RINGING ...............................................................................43 
12.1.3.3.  INTERNAL UNBALANCED RINGING ......................................................................................................43 
12.1.3.4.  RING TRIP DETECTION..........................................................................................................................44 
12.1.4.  SUPERVISION (SIGNALING) ..................................................................................................................46 
12.1.4.1.  LOOP CLOSURE DETECTION................................................................................................................46 
12.1.4.2.  GROUND KEY DETECTION....................................................................................................................48 
12.1.4.3.  CALLER ID AND FSK GENERATION......................................................................................................49 
12.1.4.4.  DTMF GENERATOR................................................................................................................................50 
12.1.4.5.  DTMF DETECTION..................................................................................................................................52 
12.1.5.  CODEC ....................................................................................................................................................53 
12.1.6.  HYBRID....................................................................................................................................................53 
12.1.6.1.  AC PATH..................................................................................................................................................53 
12.1.6.1.1.  NARROWBAND TRANSMIT PATH .........................................................................................................53 
12.1.6.1.2.  NARROWBAND RECEIVE PATH ............................................................................................................53 
12.1.6.1.3.  ANALOG TRANSHYBRID BALANCING ..................................................................................................54 
12.1.6.1.4.  IMPEDANCE MATCHING ........................................................................................................................55 
12.1.6.1.1.  DAC/ADC AUTOMUTE ............................................................................................................................56 
12.1.7.  TESTING..................................................................................................................................................57 
12.1.7.1.  LOOP BACK TESTS ................................................................................................................................57 
12.1.7.2.  DIAGNOSTICS SUPPORT ......................................................................................................................58 
Revision 1.3
Page 8 of 160
Sep 2010







N682386 equivalent, schematic
N682386/87 + N681622
Dual Programmable Extended Codec/SLCC + SLFC
8. LIST OF TABLES
Table 1: Pin Description .................................................................................................................................................4 
Table 2: N681622 Pin Description..................................................................................................................................5 
Table 3: Programmable Ranges for DC Line Feed ......................................................................................................25 
Table 4: Linefeed States ..............................................................................................................................................27 
Table 5: Operation Modes............................................................................................................................................28 
Table 6: Associated Registers for Linefeed Control .....................................................................................................29 
Table 7: TIP and RING Voltage Targets ......................................................................................................................30 
Table 8: Registers Associated with Line Monitoring – Measured .................................................................................30 
Table 9: Registers Associated with Line Monitoring – Calculated ................................................................................30 
Table 10: Registers for Polarity Reversal.....................................................................................................................32 
Table 11: PWM DC/DC Power Alarm Counter .............................................................................................................33 
Table 12: Registers Associated with Thermal Overload...............................................................................................33 
Table 13: Associated Registers for Oscillator Control (Oscillator 1 Example)..............................................................35 
Table 14: Example Register settings for Oscillator m...................................................................................................36 
Table 15: Registers for RING Generation ....................................................................................................................39 
Table 16: Example Ringer Register settings ................................................................................................................40 
Table 17: Registers for RING Trip Detection................................................................................................................45 
Table 18: Recommended RING Trip Values for Ringing..............................................................................................45 
Table 19: Loop Closure Detection Registers................................................................................................................47 
Table 20: Ground Key Detection Registers..................................................................................................................49 
Table 21: Registers for FSK Generation ......................................................................................................................50 
Table 22: DTMF frequency mapping............................................................................................................................50 
Table 23: Digital Gain Adjust Coefficients and Attenuation weightings ........................................................................54 
Table 24: Examples of Resistive Impedance Matching................................................................................................55 
Table 25: Example of Impedance Matching Programming...........................................................................................55 
Table 26: Registers for Automute.................................................................................................................................56 
Table 27: Registers associated with DC/DC Conversion .............................................................................................59 
Table 28: Example Standard Interface modes .............................................................................................................63 
Table 29: Wideband or Narrowband Hardware Selection ............................................................................................64 
Table 30: PLL and Prescaler in Wideband...................................................................................................................66 
Table 31: Device Address Bit pattern...........................................................................................................................67 
Table 32: 12-bit byte Selection.....................................................................................................................................68 
Table 33: Interrupt Registers.......................................................................................................................................74 
Revision 1.3
Page 16 of 160
Sep 2010










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