CMX228S1 MX-COM, Inc., CMX228S1 Datasheet

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CMX228S1

Manufacturer Part Number
CMX228S1
Description
ISDN data and telephony protocol engine with x.25
Manufacturer
MX-COM, Inc.
Datasheet
Features
The CMX228 is an ISDN data and telephony protocol engine which implements the lower level ISDN interface
and communicates with the CMX605 and other standard devices to form a fully integrated ISDN chipset for
both voice and data communications. The CMX228 puts all the main data processing elements in a single
device. No ISDN software has to be written and simple ‘Plug and Play’ design results. This reduces
development time and provides a highly cost-effective hardware solution. By using proven circuit designs, the
designer can move quickly from initial concept through design in to manufacture.
The CMX228 supports one voice port over the ISDN Line, which can be used to provide ISDN telephony
services or a POTS line interface, and a single data channel, capable of operation at 115,200bps. The
CMX228 features a full set of ‘Hayes’ compatible AT command codes on its asynchronous data interface, in
addition to providing keypad-configurable voice telephony services. The CMX228’s feature set and
architecture allow most analog systems to be converted to an ISDN equivalent with enhanced features.
The CMX228 is designed to work with the AMD 79C30 S/T bus interface, the Siemens PSB-21525 HDLC
formatter and the MX-COM CMX605 POTS interface circuit, and also comes complete with embedded
applications software. In addition, the CMX228 offers data transfer (up to 16kb/s) over the D-channel by
using the X.25 protocol. To support the CMX228, MX-COM can also provide licensed reference designs on
user request. A flexible Applications Program Interface (API) allows users to customize the features and
operation of their own design. The CMX228 is available in an 80-pin QFP (CMX228S1) package.
1 The CMX228 is a data processor integrated circuit that supports the protocol layers 1, 2 and 3 of the ISDN protocol stack in accordance
with the specifications of CCITT (now ITU). These specifications, which are widely used around the world, might not be supported within
the U.S.
MX-COM, Inc
4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA
www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054
All trademarks and service marks are held by their respective companies
DATA BULLETIN
Supports ITU Specifications
Supports Incoming and Outgoing Calls
Auto-bauding and Auto-parity
Hayes Compatible 'AT' Command Set
V.120 Rate Adaption
PPP Async to Sync Conversion
Supports CTR3 Approval
User Data and X.25 via B and D Channels
Full API Available
COMMUNICATION ICs
1
CMX228
Interface
S/T Interface
RS232
Driver
RS232
Parallel BUS
AM79C30
Controller
S/T BUS
+ Codec
CLI / CIDCW + SPM
DTMF Rx
IOM2 BUS
HDLC Driver
CMX605
PSB-21525
Dual FIFO
Applications
Feature Phones with Data Interfaces
Pay-Phones
PABX Telephones + Data
Data Terminal Adapters
EPOS Terminals
Remote Metering and Alarm Systems
H.320 Video Phones
Reference Designs Available
ISDN Data and Telephony
Protocol Engine with x.25
S
L
C
I
A
B
POTS 1
CMX228
2000 Chiron Technology Limited
Advance Information
Doc. # 20480216.001
2000 MX-COM, Inc.

Related parts for CMX228S1

CMX228S1 Summary of contents

Page 1

... A flexible Applications Program Interface (API) allows users to customize the features and operation of their own design. The CMX228 is available in an 80-pin QFP (CMX228S1) package. 1 The CMX228 is a data processor integrated circuit that supports the protocol layers 1, 2 and 3 of the ISDN protocol stack in accordance with the specifications of CCITT (now ITU) ...

Page 2

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 2 CONTENTS CMX228 Advance Information Page 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 3

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 3 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 4

... All trademarks and service marks are held by their respective companies 4 ISDN B-channel Data Protocol Stacks Task Scheduler, Memory Manager, Timers and Task Mailing ISDN D-channel Protocol Stacks LED Status Indicator Figure 1: Block Diagram CMX228 Advance Information HDLC Chip ISDN Interface Chip 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 5

... Memory and Peripheral Address Bus Memory and Peripheral Address Bus Memory and Peripheral Address Bus Memory and Peripheral Address Bus Memory and Peripheral Address Bus Memory and Peripheral Address Bus CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 6

... For manufacturer's use only. Connect to DV API Interrupt (inactive = high) CMX605 C-BUS Interface - Interrupt (inactive = high) HDLC Chip Interrupt RS232 Port 1 Received Data - used for autobauding CMX228 Advance Information directly SS directly SS directly DD directly DD directly SS directly SS 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 7

... RS232 Port 1 Ready To Send (inactive = high) ISDN S-interface Chip Interrupt RS232 Port 1 Data Terminal Ready (inactive = high) RS232 Port 1 Received Data (inactive = high) RS232 Port 1 Transmitted Data (high when inactive) Table 1: Signal List CMX228S1 Figure 2: CMX228 Pin-Out CMX228 Advance Information ( ILINE1 CLIP1 RING1 V ...

Page 8

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 8 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 9

... Receiver Not Ready Receiver Ready Ready to Send Set Asynchronous Balanced Mode Set Asynchronous Balanced Mode Extended Subscriber Line Interface Circuit Subscriber Pulse Metering Switched Virtual Circuit Terminal Endpoint Identifier CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 10

... All trademarks and service marks are held by their respective companies 10 CMX228 Advance Information RING pins are restored to their default 1 2000 Chiron Technology Limited RING pins 1 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 11

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 11 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 12

... The CMX228 checks to see if the ISDN line is activated and Layer 2 communications can be made. It then sets the ILFI pin accordingly. Resets all of the configuration variables back to their default values. 2000 Chiron Technology Limited Default N/A N/A Clear N/A UK N/A No channel map N/A Enabled N/A Disabled N/A Disabled N/A 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 13

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 13 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 14

... All trademarks and service marks are held by their respective companies 14 CMX228 Advance Information High Group (Hz) 1336 1477 2 (32) 3 (33) 5 (35) 6 (36) 8 (38) 9 (39) 0 (30) (23) 2000 Chiron Technology Limited 1633 A (not used) B (not used) C (not used) D (not used) 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 15

... Firmware part number - Result code display - Result code form - Result code set - Carrier detect - Data terminal ready - Load factory default - Flow control - View active and stored profiles - Store directory number CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 16

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 16 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 17

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 17 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 18

... All trademarks and service marks are held by their respective companies 18 X &C &D & &C &D &K & CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 19

... ISDN Line Failure Detection enable/disable Description If set to 0 auto-answering will be disabled. Any other value will cause one ‘RING’ result code to be sent to the DTE after which the call is answered. CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 20

... Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies 20 CMX228 Advance Information 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 21

... All trademarks and service marks are held by their respective companies 21 Description Default receive window size. Description Default transmit window size. Description Group number. CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 22

... A value of zero disables line folding. Description Sets the value, in seconds, of the LAPB T1 timer. Description Sets the value, in seconds, of the LAPB T3 timer. CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 23

... All trademarks and service marks are held by their respective companies 23 Description Sets the number of times the LAPB protocol will retry sending before giving up and applying recovery procedures. CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 24

... CMX228 Advance Information Start Hex Address End Hex Address 000 000 01F FFF 020 000 03F FFF 0C0 000 0EF FFF 0F0 000 0F0 0FF 0F0 100 0F0 1FF 0F0 200 0FF FFF 2000 Chiron Technology Limited 2000 MX-COM, Inc. Doc. # 20480216.001 ...

Page 25

... Carrier Detect ~ Ready to Send ~ Receive Data ~ Transmit Data ~ Data Terminal Ready ISDN Line Activated ISDN Line Activated Call Connected ISDN Line Failure Indicator ISDN Line Failure Indicator CMX228 Advance Information RS232 port ~ ~ 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 26

... RING & TONES C-BUS Figure 3: Application Block Diagram CMX228 Advance Information 24C16 TC 1232CO 10 x LEDS 16K EEPROM WATCHDOG BUS CMX228 API 4K RAM 128K ROM port PROTOCOL ENGINE MAX 238 RS232 V24/1 RS232 port 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 27

... SS -20 = 25°C AMB -55 -40 Notes Min. 2.7 -40 -100 CMX228 Advance Information Max. Units 7 0 100 1300 mW 17 mW/°C above 25°C 125 °C 85 °C Max. Units 5.5 V +85 °C +100 ppm 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 28

... OUT 31.2468 CMX228 Advance Information = - 40°C to +85°C. AMB Typ. Max. Units 25.0 45.0 mA 13.0 26 +10.0 µA V 400 mV 10 µA 125 ns 125 31.2531 ns 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 29

... All trademarks and service marks are held by their respective companies 29 t DSTID t HSTLA t DAID t t DSTR FRA t t DAR DRID t WRL t DSTOD t HSTLA t DSTW DAW DWOD SODW t WWL CMX228 Advance Information t DRST t HRA t HRID t DRA t DWST t HWA t HWOD 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 30

... All trademarks and service marks are held by their respective companies CLH CLL t t CLR CLF t CYCL t t WNIL WNIH t t WRSL WRSH t t WXH WXL CYK Figure 5: Miscellaneous Timing CMX228 Advance Information 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 31

... Max. Units ( 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 32

... Units ( 50pF L Min. Max. Units CYCL CYCL - 10 ns CYCL CYCL µ s µ s µ s µ s 2000 MX-COM, Inc. Doc. # 20480216.001 2000 Chiron Technology Limited ...

Page 33

... ISDN Data and Telephony Protocol Engine with x.25 6.2 Packaging Figure 6: 80-pin QFP Mechanical Outline: Order as part no. CMX228S1 MX-COM, Inc 4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA www.mxcom.com tel: 800 638 5577 336 744 5050 fax: 336 744 5054 All trademarks and service marks are held by their respective companies ...

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