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參數(shù)資料
| 型號： | CMX218 |
| 英文描述： | ISDN Data and Telephony-Protocol Engine??? |
| 中文描述： | ISDN數(shù)據(jù)和語音通信協(xié)議引擎？？？ |
| 文件頁數(shù)： | 26/34頁 |
| 文件大小： | 353K |
| 代理商： | CMX218 |
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ISDN Data and Telephony Protocol Engine (no X.25)
CMX218
1999
Consumer Microcircuits Limited
1999
Chiron Technology Limited
26
D/218/1
1.5.9
Hardware Description
1.5.9.1 LED Status Indicators (LED1 to LED9, and ILFI)
LED1 (HK1)
is low when the POTS port is off-hook, high when on-hook.
LED2 (AA)
indicates that register S0 has been set to 1 or more when low and set to 0 when high
(RS232 Auto Answer indication).
LED3
(DCD)
is low when a call is connected via the RS232 port (if &C0 is set to '1'), high when a call
is not connected to this port.
LED4 (RTS)
is low if RTS on the RS232 port is active and vice versa, indicating flow control (RS232
Ready To Send).
LED5 (RXD)
is low if data is being sent to the DTE (RS232).
LED6 (TXD)
is low if data is being received from the DTE (RS232).
LED7 (DTR)
is low if the de-bounced DTR line on the RS232 port is active and vice versa.
LED8 (AR)
is pulsed high and low until the ISDN line is activated, when it remains low constantly.
LED9 (CN1)
is high when the POTS port is connected to the ISDN network, low when not connected.
ILFI
is high when an ISDN Link Failure is Indicated, low when the link is operational.
The functions of the LED and ILFI indicators are set out in the table below:
Pin No.
Designation
12
LED1
13
LED2
14
LED3
15
LED4
16
LED5
17
LED6
18
LED7
19
LED8
21
LED9
54
ILFI
POTS port
Off-Hook
~
~
~
~
~
~
ISDN Line Activated
Call Connected
ISDN Line Failure
Indicator
RS232 port
~
Auto-Answer
Carrier Detect
Ready to Send
Receive Data
Transmit Data
Data Terminal Ready
ISDN Line Activated
~
ISDN Line Failure
Indicator
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