CMX208S1 MX-COM, Inc., CMX208S1 Datasheet - Page 16

• Manufacturer Part Number: CMX208S1
• Description: ISDN dual telephony protocol engine
• Manufacturer: MX-COM, Inc.

ISDN Dual Telephony Protocol Engine
5.
5.1
The CMX208 is intended for use as part of an ISDN chipset. The MX-COM recommended hardware
implementation contains the following elements (refer to Figure 3):
S/T
5.2
The firmware and finite state machine embedded in the CMX208 has been designed into products that have
gained ETSI CTR3 approval.
MX-COM, Inc
4800 Bethania Station Road, Winston-Salem, NC, 27105-1201, USA
www.mxcom.com tel: [phone] 744 5050 fax: [phone]
All trademarks and service marks are held by their respective companies
12V
‘S’ bus interface via RJ45 socket.
RJ11 analog telephone sockets and analog circuitry.
ISDN line transformer.
AMD79C30 S-interface controller.
Auxiliary Motorola MC145480 PCM codec.
64K bytes external RAM.
16K Non-volatile memory.
Six processor controlled LED indicator signals.
HDLC drivers for the 2 ISDN B-channels, both channels can be used for data transfer.
MOTOROLA
MC34063A
MC7805CT
PSU
TRANSFORMER
Application Notes
General
Approvals
31909x029
50V
5V
IOM2
BUS
POTS 1 SLIC
FIFO & DLC Tx DTMF,RING,TONES
DISCRETE
S/T CONTROLLER & PCM CODEC
POTS
port
AMD AM79C30
Figure 3: Application Block Diagram
POTS 2 SLIC
DISCRETE
POTS
port
PARALLEL BUS
5 x Interface ICs
RING & TONES
RING & TONES
PCM CODEC
16
MOTOROLA
HY 6281009
TxCLID,SPM
TxCLID,SPM
MC145480
128K RAM
RxDTMF
RxDTMF
CMX605
CMX605
C-BUS
C-BUS
BUS
I C
2
16K EEPROM
4K RAM 128K ROM
PROTOCOL ENGINE
24C16
CMX208
2000 Chiron Technology Limited
CMX208 Advance Information
WATCHDOG
TC 1232CO
Doc. # 20480214.001
2000 MX-COM, Inc.
10 x LEDS
API
port