CMX218S1 MX-COM, Inc., CMX218S1 Datasheet - Page 21

• Manufacturer Part Number: CMX218S1
• Description: ISDN data and telephony protocol engine
• Manufacturer: MX-COM, Inc.

ISDN Data and Telephony Protocol Engine (no X.25)
4.7.2
Outgoing calls are requested specifying either B-channel unless channel mapping is enabled via !C4 and !C5
registers. The SETUP message is sent without High Layer Compatibility or Low Layer Compatibility and with
the following Bearer Capability:
If there is a saved MSN in !C6 register all outgoing call SETUP messages will contain the saved number in a
Calling Party Number Information Element.
4.7.3
Once a call is connected to the digital port, whether it was incoming or outgoing, the DCD pin is set high to
indicate that the call is connected (providing &C0 command is not given). If the DCD pin is set high, the LED3
pin will be set low.
4.7.4
The call is cleared either by the ATH command or by the ISDN network. When the call has been cleared, the
DCD pin is set low and the LED3 pin is set high (providing the &C0 command is not given).
4.8
Details of this will be supplied to customers under a Non-Disclosure Agreement.
The following Memory Map indicates the main code areas used on the CMX218:
MX-COM, Inc
4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA
www.mxcom.com tel: [phone] 744 5050 fax: [phone]
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Outgoing B-Channel Data Calls
CCITT coding standard
Unrestricted digital
Circuit mode
64k information transfer rate
Connected Calls
Call Clearing
Application Programmer's Interface
Code Space
External RAM
API area
AMD79C30 ISDN Interface Chip
PSB21525 HDLC Driver Chip
Reserved
Function
Start Hex Address
21
0C0 000
020 000
0F0 000
0F0 100
0F0 200
000 000
End Hex Address
0EF FFF
0FF FFF
01F FFF
03F FFF
0F0 0FF
0F0 1FF
2000 Chiron Technology Limited
CMX218 Advance Information
Doc. # 20480215.001
2000 MX-COM, Inc.