NAL RESEARCH CORPORATION A3LA-RM, Быстрый старт

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AL3A-RM Quick Start Guide Version A
Document Number: 451-93156-014A 9 of 18
2 D
EVICE
D
ESCRIPTION
2.1 M
ULTI
-
INTERFACE
C
ONNECTOR
The multi-interface connector (see Figure 1 ) is a male 25-pin miniature D-sub type that includes
five interfaces—RS232, DC input power, ON/OFF control line, analog audio, and DPL. The multi-
interface connector pin assignments are summarized in Table 1 , which is ‘pin-to-pin’ the same
as model A3LA-R, A3LA-XM, and A3LA-X.
Table 1: Pin Assignment for the Multi-interface Connector
Pin # Signal Description Interface
1 EXT_ON_OFF Power on/off control input DC Power
2 +12VDC Output voltage to power the DPL handset DC Power
3 EXT_GND External GND input DC Power
4 EXT_B+ External 4.0 V – 5.4 V or 5.0 V – 32.0 V DC Power
5 SPKR_AUD Speaker audio output Analog Audio
6 DA_TX PCM digital audio output Digital Audio
7 RI RS232 ring indicator RS232 Data
8 RTS RS232 request to send RS232 Data
9 TX RS232 transmit data (input) RS232 Data
10 DCD RS232 data carrier detect RS232 Data
11 DA_FS PCM digital audio frame sync output Digital Audio
12 DA_CLK PCM digital 2.048 MHz audio clock output Digital Audio
13 RX RS232 receive data (output) RS232 Data
14 SIGNAL GND Signal ground, 0 V signal reference and return GND
15 MIC_AUD Microphone audio input Analog Audio
16 EXT_B+ External 4.0 V – 5.4V or 5.0 V – 32.0 V DC Power
17 EXT_GND External GND input DC Power
18 DPL_TX Digital Peripheral Link (DPL) data output DPL UART
19 DTR RS232 data terminal ready RS232 Data
20 DPL_RX Digital Peripheral Link (DPL) data input DPL UART
21 DSR RS232 data set ready RS232 Data