CMX228S1 MX-COM, Inc., CMX228S1 Datasheet - Page 5

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CMX228S1

Manufacturer Part Number
CMX228S1
Description
ISDN data and telephony protocol engine with x.25
Manufacturer
MX-COM, Inc.
Datasheet
ISDN Data and Telephony Protocol Engine with x.25
2.
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
S1 Package
Pin No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
1
2
3
4
5
6
7
8
9
Signal List
ISDNRST
DV
DV
Name
DCD1
CTS1
XTAL
XTAL
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
RST
A/D7
A/D6
A/D5
A/D4
SDA
SCL
WR
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
RI1
RD
ST
A9
A8
DD1
SS1
Signal
bi-directional EEPROM - Serial Data
bi-directional Memory and Peripheral Address and Data Bus
bi-directional Memory and Peripheral Address and Data Bus
bi-directional Memory and Peripheral Address and Data Bus
bi-directional Memory and Peripheral Address and Data Bus
output
output
output
output
output
power
output
power
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
output
Type
input
input
EEPROM - Serial Clock
ISDN S-interface Chip Reset
RS232 Port1 Ring Indicator (high when inactive)
RS232 Port1 Data Carrier Detect (high when inactive)
RS232 Port1 Clear To Send (high when inactive)
CMX228 Chip Reset (active low)
The digital positive supply rail. Levels and voltages are
dependent upon this supply. This pin should be decoupled to
DV
The output of the on-chip Xtal oscillator inverter
The input to the oscillator inverter from the Xtal circuit
The digital negative supply rail (ground)
POTS Port Off-Hook Indicator (HK1)
RS232 Port 1 Data Carrier Detect Indicator (DCD)
RS232 Port 1 Ready To Send Indicator (RTS)
RS232 Port 1 Receive Data Indicator (RXD)
RS232 Port 1 Transmit Data Indicator (TXD)
RS232 Port 1 Data Terminal Ready Indicator (DTR)
ISDN Line Activated Indicator (AR)
Watchdog Timer Stimulus
POTS Port Call Connected Indicator (CN1)
Memory Write Access Strobe
Memory Read Access Strobe
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
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
RS232 Port 1 Auto-Answer Indicator (AA)
SS
by a capacitor
5
Description
2000 Chiron Technology Limited
CMX228 Advance Information
Doc. # 20480216.001
2000 MX-COM, Inc.

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