The TQMC400 is a single-width QMC module conforming to the VITA 93.0 standard for small form factor (SFF) mezzanine modules. This QMC module provides four independent 4 UART channels, each featuring multiprotocol transceivers. Every channel can be programmed to operate as an RS232, RS422/RS485 full duplex or RS485 half-duplex interface.
In RS232 mode, each channel supports comprehensive signal lines including RxD, TxD, RTS, CTS, DTR, DSR, CD, RI and GND. RS422 and RS485 full-duplex modes support a four wire interface (RX+, RX-, TX+, TX-) plus ground (GND).
RS485 half-duplex supports a two wire interface (DX+, DX-) plus ground (GND). On-chip switchable termination of 120Ω is provided for the RS422/RS485 interfaces.
Selectable data rates are up to 1 Mbps for RS232 mode and 20 Mbps for RS422/RS485 half-duplex and full-duplex mode. Additionally, a reduced slew rate mode with lower EMI provides data rates with max. 250 kbps for RS232 and max. 500 kbps for RS422/RS485.
Each UART channel is equipped with 256 byte transmit and receive FIFOs, significantly reducing the overhead required to provide data to and get data from the transmitters and receivers. FIFO trigger levels are programmable, and the UART interface provides readable FIFO levels for efficient data management.
Ideal for rugged industrial, defense, and embedded applications, the TQMC400 QMC module delivers flexible, high-speed serial connectivity in a compact footprint.
