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參數(shù)資料
| 型號： | XE2486 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Miniature 2400 bps Modem Module |
| 中文描述： | 微型2400 bps調(diào)制解調(diào)器模塊 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 34K |
| 代理商： | XE2486 |
XECOM
(3)
XE2486
5
SPK
SPK provides the audio output to a speaker. Speaker output is controlled by the
ATL and ATM commands. The input impedance to the speaker driver must be
greater than 300 ohms.
6, 7
N/C
No Connection
8
/SLP
This active low output indicates when the modem is in the sleep mode.
9
N/C
No Connection
10
TXD
TXD provides serial data input from the host. A logic high represents a "Mark"
and a low represents a "Space".
11
RXD
RXD provides serial data output to the host. A logic high represents a "Mark"
and a low represents a "Space".
12
/V-D
The Voice-Data ouptut can be used to drive an external relay for switching
between the modem and handset connected to the same telephone line.
13
/DTR
Data Terminal Ready is an active low input to the modem. The AT&D command
sets the function of DTR.
14
/DSR
Data Set Ready is an active low output from the modem. Its operation is
determined by the AT&S command.
15
/RI
Ring Indicator is an active low output which marks the presence of a ring on the
line.
16
/CTS
Clear to Send is not used on the XE2486; it will remain low at all times.
17
/DCD
Data Carrier Detect goes low to indicate receipt of a valid incoming carrier. The
AT&C1 command enables the carrier detect function.
18
/HS
This active low output indicates when the XE2486 has made a 2400 bps
connection.
19
VCC
VCC provides the +5 volt power required by the modem.
20
Gnd
Ground provides the common reference for the XE2486.
21
RST
This active high input cause a hardware reset in the XE2486. The reset pulse
must be held high for at least 10 milliseconds to correctly reset the modem.
22
N/C
No Connection
PIN
NAME
DESCRIPTION
Pin Descriptions
continued
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