The Embedded I/O Company

TFMC684

32 Differential Channel FMC Mezzanine Module

TFMC684-10R

Application Information

The TFMC684 is an FMC (FPGA Mezzanine Card)

Mezzanine Module complying with the ANSI/VITA 57.1

standard that offers the possibility to add a 32bit M-LVDS

(Multipoint Low Voltage Differential Signaling) I/O Interface

or a 32bit RS-485/RS-422 I/O Interface to FMC Carrier

Cards.

The

Low

Pin

Count

FMC

Connector

provides

32

independent control signals which configure the direction

of each Differential Transceiver.

The 32 data lines are routed as single-ended traces from

the FMC Connector to the Differential Transceivers where

they are converted into 32 differential pairs.

The TFMC684-10R meets the TIA/EIA-899 standard

(Type-2 Receivers) and the TFMC684-20R meets the

TIA/EIA-485 and the TIA/EIA-422 standard.

The 32 bits of differential I/O are connected to a VHDCI-68

Connector in the front panel.

On every of the 32 bits the TFMC684-10R supports

signaling rates up to 200Mbit/s which means that a

100MHz clock can be transmitted or in other words that

200M of voltage transitions per second can be performed.

The TFMC684-20R supports signalling rates up to

16Mbit/s.

All signals connecting the Differential Driver/Receivers

with the FMC Carrier are powered by an adjustable

voltage generated by the Carrier. Because of voltage

translation devices on the TFMC684 this voltage can

range from 1.2V to 3.6V which allows the FPGA's I/O cells

to be configured for various different I/O standards.

The signaling standard reference voltage pin, which is

powered by the TFMC684, provides half of the adjustable

voltage generated by the carrier for I/O standards

requiring a reference voltage.

A power good LED indicates whether all voltages on the

TFMC684, which are provided by the FMC Carrier, are

within limits.

The TFMC684 is equipped with an I²C EEPROM which

acts as an IPMI resource requesting the value of the

adjustable voltage, for example.

The module meets the requirements to operate in

extended temperature range from -40° to +85°C.

TEWS TECHNOLOGIES GmbH keeps the right to change technical specification without further notice.

All trademarks mentioned are property of their respective owners.

Issue 1.0.2

2017-08-24

TEWS TECHNOLOGIES GmbH

Am Bahnhof 7

25469 Halstenbek, Germany

Phone: +49 (0) 4101 4058 0

Fax: +49 (0) 4101 4058 19

e-mail: info@tews.com

www.tews.com