Specifications

CINTERION
®
BGS12 Hardware Interface Description
Contents
48 of 109
Page
BGS12 HID_V00.915
Confidential / Released
2019
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01
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07
Features
•
Includes only the data lines TXD2 and RXD2 plus RTS2 and CTS2 for hardware hand-
shake.
•
On ASC2 no RING line is available. The indication of URCs on the second interface
depends on the settings made with the AT^SCFG command. For details refer to [1].
•
Configured for 8 data bits, no parity and 1 or 2 stop bits.
•
ASC2 can be operated at fixed bit rates from 4,800 bps to 230,400 bps. Autobauding is not
supported on ASC2.
•
Supports RTS2/CTS2 hardware flow control.
Table 14: DCE-DTE wiring of ASC2
V.24 circuit
DCE DTE
Line function Signal direction Line function Signal direction
103 TXD2 Input TXD Output
104 RXD2 Output RXD Input
105 RTS2 Input RTS Output
106 CTS2 Output CTS Input
The following figure shows the startup behavior of the asynchronous serial interface ASC2.
For output and input states see Table 7
Figure 20: ASC2 startup behavior