CMX228S1 MX-COM, Inc., CMX228S1 Datasheet - Page 7

• Manufacturer Part Number: CMX228S1
• Description: ISDN data and telephony protocol engine with x.25
• Manufacturer: MX-COM, Inc.

ISDN Data and Telephony Protocol Engine with x.25
3.
Note: The CMX228 is to be used as part of a chip-set. Please refer to Section 5 for details of the
recommended chip-set.
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
S1 Package
Pin No.
76
77
78
79
80
External Components
ISDNINT
V
DD
Name
RXD1
RTS1
DTR1
TXD1
ISDNRST
DV
DV
DCD1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
CTS1
XTAL
XTAL
LED1
SDA
RST
SCL
DD1
SS1
RI1
ST
Signal
output
Type
input
input
input
input
Figure 2: CMX228 Pin-Out
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
7
V
DD
V
DD
Description
2000 Chiron Technology Limited
(V
ILINE1
CLIP1
RING1
DV
ILFI
N/C
API-TXD
API-RXD
N/C
N/C
PSBRES
(V
DV
ASTB
A/D0
A/D1
A/D2
RING1
N/C
V
SS
SS
SS
CMX228 Advance Information
DD0
SS0
)
)
V
DD
Doc. # 20480216.001
2000 MX-COM, Inc.