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PDF N681622 Data sheet ( Hoja de datos )

Número de pieza N681622
Descripción Dual Programmable Extended Codec/SLCC + SLFC
Fabricantes nuvoton 
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No Preview Available ! N681622 Hoja de datos, Descripción, Manual

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

1 page




N681622 pdf
N682386/87 + N681622
Dual Programmable Extended Codec/SLCC + SLFC
4.2. N681622 Pin Description
Pin Name
RIP
TVB
TPP
RVB
GND
VDD
SDB
SDA
TIN
RIN
SDR
NC
NC
NC
VBAT
RING
NC
TIP
NC
SDT
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Functionality
Ring Driver Pull up Current from 34.8 Ohm resistor
Tip Pull-Up Driver control voltage
Tip Driver Pull up Current from 34.8 Ohm resistor
Ring Pull-Up Driver control voltage
Supply ground (0V)
3.3V Supply
Subscriber differential signal B
Subscriber differential signal A
Tip DC Pull-Down current
Ring DC Pull-Down current
Subscriber differential Ring input
Not connected
Not connected
Not connected
Battery Supply Voltage
Ring terminal
Not connected
Tip terminal
Not connected
Subscriber differential Tip input
Type
LV
LV
LV
LV
LV
LV
LV
LV
LV
LV
HV
Pin Type
I/O
I
I/O
I
G
P
O
O
I
I
I/O
HV P
HV O
HV O
HV I/O
*Note: Heat sink metal paddle under device should be connected to VBAT plane for heat dissipation as it is internally
connected to Vbat as shown in Figure 2.
Table 2: N681622 Pin Description
LV Low Voltage
HV High Voltage
G Ground
O Output
I Input
P Power
Revision 1.3
Page 5 of 160
Sep 2010

5 Page





N681622 arduino
N682386/87 + N681622
Dual Programmable Extended Codec/SLCC + SLFC
14.7.8.  LOOP CLOSURE DEBOUNCE ..............................................................................................................109 
14.7.9.  RING TRIP DEBOUNCE INTERVAL......................................................................................................109 
14.7.10.  PWM PERIOD........................................................................................................................................109 
14.7.11.  DC/DC CONTROLLER CONTROL ........................................................................................................110 
14.7.12.  ON-HOOK VOLTAGE ............................................................................................................................110 
14.7.13.  GROUND MARGIN VOLTAGE ..............................................................................................................111 
14.7.14.  HIGH BATTERY VOLTAGE ...................................................................................................................111 
14.7.15.  LOW BATTERY VOLTAGE....................................................................................................................111 
14.7.16.  LOOP CLOSURE DETECT/RING TRIP DETECT COEFFICIENT.........................................................112 
14.7.17.  LOOP CLOSURE DETECT THRESHOLD WITHOUT / WITH HYSTERESIS .......................................112 
14.7.18.  RING TRIP DETECT THRESHOLD .......................................................................................................113 
14.7.19.  OFFSET VOLTAGE ...............................................................................................................................113 
14.7.20.  DC/DC TIME ON ....................................................................................................................................113 
14.7.21.  AUTOMUTE FUNCTION........................................................................................................................114 
14.8. 
GROUND KEY DETECTION..................................................................................................................115 
14.8.1.  LINEFEED CONTROL ...........................................................................................................................115 
14.8.2.  GROUND KEY DETECT HIGH/LOW THRESHOLD ..............................................................................115 
14.8.3.  GROUND KEY DETECT DEBOUNCE TIME .........................................................................................116 
14.8.4.  GROUND KEY DETECT FILTER COEFFICIENT LOW/ HIGH..............................................................116 
14.8.5.  DC RING TRIP DEBOUNCE FILTER COEFFICIENT LOW...................................................................116 
14.8.6.  DC RING TRIP CURRENT THRESHOLD..............................................................................................117 
14.8.7.  DC RING TRIP DEBOUNCE TIME ........................................................................................................117 
14.8.8.  EXTERNAL BATTERY SWITCH OUTPUT CONFIGURATION 1 ..........................................................117 
14.8.9.  DC/DC HEAVY CURRENT CONVERTER .............................................................................................118 
14.8.10.  DC/DC TARGET VOLTAGE...................................................................................................................118 
14.9. 
MONITORING REGISTERS ..................................................................................................................119 
14.9.1.  MONITOR CURRENT FOR RING TRIP AND LOOP CLOSURE...........................................................119 
14.9.2.  MONITOR CURRENT FOR RING TRIP AND LOOP CLOSURE...........................................................119 
14.10. 
LINE CONTROL REGISTERS ...............................................................................................................120 
14.10.1.  VOLTAGE REGISTERS.........................................................................................................................120 
14.10.1.1.  BATTERY VOLTAGE SENSE (READ ONLY)........................................................................................120 
14.10.1.2.  TIP/RING TRANSISTOR 3 EMITTER VOLTAGE SENSE (READ ONLY) .............................................120 
14.10.1.3.  TIP/RING TRANSISTOR 3 EMITTER VOLTAGE SENSE (READ ONLY) .............................................120 
14.11. 
TRANSISTOR CURRENT REGISTERS ................................................................................................121 
14.11.1.  TIP/RING TRANSISTOR 1/2/3 CURRENT SENSE (READ ONLY) .......................................................121 
14.12. 
LOOP SUPERVISION ............................................................................................................................122 
14.12.1.  LONGITUDINAL CURRENT (READ ONLY) ..........................................................................................122 
14.12.2.  LOOP VOLTAGE SENSE (READ ONLY) ..............................................................................................122 
Revision 1.3
Page 11 of 160
Sep 2010

11 Page







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