Typical Telecom System Macro View
SWITCHING SYSTEMS
SUBSCRIBER APPARATUS ~
~~_~~_~_?:_-~ ________ ~ __ :i_,~_~_1_~_C~
G~---l~ G-~~
- - - i
'AU
co •• u""'n"______. g
'--..--..--.1 J-' " ANALOG.J1.Jl.-1'L DIGITAL PCM (BUS)
Typical Telecom Switching System Micro View (Inside the switching system)
.,
•
~LJ
LINE CARO LINE CONTROL
• SLiC • ,..p
• FILTER .. i': ... • MEMORY o\! .. it,sw",;a:;.~';!;fX11~
·CODEC
n
• INTERFACE• SYNC & CON TROL ,...
- - "riiiI
l -•
II I I
It
... .,... .~.~" ...
•
")(1 • H. X 114_c p'''''''': ~""--""'~ •• " ,
-...
f ( •
L.
LINE CARD LINE CONTROL
- - )( 1-
}-)(l)• SLiC
Iii
• ,..p- .... S=ti ....
• FILTER • MEMORY
• CODEC • INTERFACE
•
• SYNC & CONTROL ...
•
CONTROL PROCESSING• MICROPROCESSOR
• MEMORY
•
~CENTRAL OFFICE CLASS 5
CENTRAL OFFICE CLASS
...
TRUNKC~
• MICROCOMPUTER
• HOBJ AMI COOER
• SLiC
• REPEATER
~
CROSSPOINT SWITCHES CD22100
CD22101/CD22102 CD54/74HC/HCT22106 CD22M093E CD22M3494E
.. ' DISPLAY
I=Z&J
..
I/OTRANSMISSION
TO DIGITAL T1-TYPE PCM BUS
Telecommunications
Analog Interface at Central Office, Switch or PBX Switch End
A Subscriber Une Interface Circuit that Integrates the traditional transformer-based discrete telephone line interface functions, Ie BORSHT functions, on a single chip.
Acro,:,ymn for Interface functions required between subscriber telephone and the switch.
B Battery feed; sets up DV bias voltage across Tip and Ring lines.
o
Overvoltage protection; provides transient protection R Ringing; controls ringing signal to subscriber telephone S Supervisory; monitors telephone lino status for on/off hook H Hybrid; differential to single-ended conversion and vice versa T Test; provides access to telephone IIno via relay for testing• Any Analog or Digital PBX Switching System • Hotel/Motel Switching Systems
• Voice Messaging PBX Systems
• Direct Inward Dial (DID) Trunks
• Digital Loop Carrier Systems
• Central Office (CO) Switching Systems
SWITCHING SYSTEM
TIP SUC FUNCTION
'---v---'
BORSHT FUNCTIONS REQUIRED HERE
VOICE
""'
CODEC FUNCTIONPCM ..rt...r1... TO
DIGITAL PCM BUS
Telecommunications
Subscriber Line Interface Circuits Common Features to all SUCs; (HC-5502B, HC-5504B, HC-5509B, HC-5524, HC-5504DLC)
• Monolithic Integrated Device • Internal Ring Relay Driver
• 01 High Voltage Process • Low Power Consumption During Standby
• Compatible with Worldwide PBX Performance Requirements • Switch Hook, Ground Key and Ring Trip Detection Functions
• Controlled Supply of Battery Feed Current for Short Loops • Selectlvo Donlal of Power to Subscriber Loops
LOOP TYPICAL
PART CURRENT RINGING TYPE SUPPLY
NUMBER FEATURES mADC TYPE VOLTAGES
HC-5502B • Low Voltage +5V (VB+) Capability 30 Single-Ended -48V, +12V
• Pin for Pin replacemont for tho HC-5502A Ground Reference or+5V
HC-5504B • Allows Interfacing to nogativo suporlmposed 40 Single-Ended -48V.+12V
ringing systems Dattery or Gnd or+5V
Roforence or Dalanced Ringing
HC-5509B • Compatible with worldwide PBX AND Central 20t050 Single-Ended -48V. +12V
Office performance requlremonts Dattory or Gnd
• Contains two internal relay drlvors Reforence or
• Programmable loop current limit Dnlanced Ringing
• High temperature alarm output
HC-5524 • HC-5509B version operating at -24V battery 20t060 Slnolo-Ended -24V. +5V
and +5V DottoryorGnd
Roforonce or Dolanced Ringing
HC-55040LC • Switch hook detect threshold allows multi-phone 40 Singlo-Ended -40V. +12V
operation Dollory orGnd or+5V
Roforonce or Dnlancod Ringing
Non-linear analog to digital and digital to analog converter for voice and PCM (Pulse Cove Modulation) signals
PART CLOCK SUPPLY
NUMBER FEATURES RATES VOLTAGE
CD22354A • Moots or exceeds all AT&T 03/04 specs CCITT recommendations 64kHz to ±5V±5%at
(fJ-Law) • Complote COOEC and filtering systems: 2.1MHz 90mW(Max)
- No oxternal components for sample-and-hold and auto-zero CD22357A - Rucolve output filter with SIN X/X correction
(A-Law) and ndditional8kHz suppression
• Varlablo data clocks- from 64kHz to 2.1 MHz
• Gynchronous and asynchronous operation
• TTL or CMOS compatible logic
• [GO protection on all inputs and outputs
• AcljllGI.lble gain for transmit input
Applications Diagram
Typical LIne Circuit Application with the HC-5509B and CD22354A+91
T l P o - - _ ... ....:.::~-"--~:----t
HC - 5509B
sLle DlGrrAL PCM BUS
PACKAGE 24-PinDIP EorC 24 Pin DIP EorC 28 Pin PLCC 28 Pin DIP EorC 44 Pin PLCC
28 Pin DIP forC 44 Pin PLCC 24 Pin DIP EorC 28 Pin PLCC
PACKAGE 16 PIn OIP-E
Telecommunications
Analog Interface at Central Office Switch or PBX Switch End
(Continued)
High-performance analog switches matrix for PBX, studio, audio switching, and multisystem bus interconnects RON RON Fa. RESPONSE CROSSTALK
CONFIGU- (TYP.) (TYP.) (TYP.) -3dB, (TYP.) -40dB SUPPLY
TYPE FEATURES RATION @12V @12V Rl" 1K, 10V (FO.),10V VOLTAGE PACKAGE
BIMOS-E Crosspoint Switches with Control Input Memory
C022M3493 • Optional on-chip strobe- 16x8x 1 36n 6n 4SMHz 3MHz 4Vto14V 4o-Pin
C022M3494 Independent address latches OIP-E
• Manual and automatic power-on 44-Pin
resets PLCC
• Crosstalk: -9OdB (min) @ 10kHz
• BiMOS-ETechnology
• Parallel input addressing
• HC/HCT ground-referenced inputs available
• 2kV minimum ESO protection
• Latch-up current: SOmA (min)
• Pin and functionally compatible with the SGS M3494 CMOS Crosspoint Switches with Control Memory
C022100 • "Built-in" control latches 4x4xl 7Sn 18n 40MHz 1.SMHz 3Vto 16-Pin
• Large analog signal capability 18V OiPE,F
±VOOI2
• 1 OMHz switch bandwidth
• High linoarity - O.S% distortion (typ.) at I - 1 kHz, VIN .. SVp-p, VOO "10V,and RL -lkn
• Standard CMOS noise immunity
• 100% tostod lor maximum quiescont current at20V
C022101 • Strobed control input 4x4x2 7sn en 40MHz 2.SMHz 3Vto 24-Pin
• "Built-in"latched inputs leV OIPE,F
• Large analog signal capability
±VOO/2
• "1 OMHz switch bandwidth
• High linearity - 0.2S% distortion (typ.) at f .. 1 kHz, VIN .. SVp-p, VOO-VSS"10V,and RL = lkn
• Standard CMOS noise Immunity
C022102 • Same as CO 22101 , but has Sell 4x4x2 7Sn 8n 40MHz 2.SMHz 3Vto 24 Pin
Reset flip-flop control input 18V OIPE,F
instead of strobed control input
COS4/ • 64 analog switches in an 8x8xl 64n 25n 6MHz 7MHz 2Vto 28-Pin
74HC(T) 8x8x 1 array 10V OIPE
22106 • On-chip line decoder & control latches
• Automatic power-up reset by using a O.lI1F capacitor at the M R pin
• RON resistance 9sn max.
@VCC"4.SV
• Analog signal capabilityVCC/2
I
T1!U! .... ONI CINTML co.I
OHIC! MA'NfRAM. VOICE
COMPUnR
, ..
OTHER "
AUOIO/COMPUTERfTELEPHOHE EQUIPMENT
~.ft.
I~ '--11
Il~
~
o
COMPUT'. CROSSPOINT SWITCHES1.'~ IX TE.M'NAL . . CD22100
~g~!:~~~~~~~~~~1 oe CD22 .. H31/CD22M34141
YOICr.TELE~ ~
~ IWITCH
L..-...t •• nCHCONTJtO\.