Specifications

PART 3 – Analog SocketModems Chapter 10 – SocketModem (MT5692SMI)
Multi-Tech Systems, Inc. Universal Socket Hardware Guide for Developers (S000342P) 167
MCR – Modem Control Register
(Addr = 4)
The Modem Control Register (MCR) controls the interface with modem or data set.
Bit 7
-5 Not used
Always 0
Bit 3 Output 2
When this bit is a 1, HINT is enabled. When this bit is a 0, HINT is in the high impedance state.
Bit 2 Output 1
Reserved.
Bit 1 Request to Send (RTS)
This bit controls the Request to Send (RTS) function. When this bit is a 1, RTS is on. When
this bit is a 0, RTS is off.
Bit 0 Data Terminal Ready (DTR)
This bit controls the Data Terminal Ready (DTR) function. When this bit is a 1, DTR is on.
When this bit is a 0, DTR is off.