Connect Tech Inc. | FreeForm/Express S6 - PCIe Spartan-6 FMC Carrier | User Manual
Revision 0.01 15
Serial

Description

A standard RS232 serial ports is provided on P4, with UART implementation provided by FPGA logic.

Connectors

Function
RS232
Locations
P4
Type
2x5 0.100” header
Samtec TSW-105-07-L-D
Pinout
Pin
Signal
Pin
Signal
1
N/C
2
N/C
3
RXD1
4
RTS1
5
TXD1
6
CTS1
7
N/C
8
N/C
9
GND
10
N/C
Power

Description

The FreeForm/Express S6 is designed to be powered from the PCIe bus. The board requires +3.3V DC for
all circuitry. +12VDC is required for the FMC power good signal and as the FMC module’s power source.
The FreeForm/Express S6 generates all other required power rails on-board.
In addition, a programming / desktop debugging standalone power connector P1 is provided.
WARNING: Do not plug the FreeForm/Express S6 into a PCIe slot with an external power source
connected to P1. This could lead to board damage and void the product warranty.

Connectors & Jumpers

Function
Location
Type
Pinout
Pin
Signal
Description
1
GND
Digital Ground
2
GND
Digital Ground
3
GND
Digital Ground
4
+3.3V
+3.3V DC, used by circuitry and
power regulators
5
+3.3V
+3.3V DC, used by circuitry and
power regulators
6
+12V
+12V DC used by FMC module,
and power good circuit