TPCE261 User Manual Issue 1.0.2
Page 6 of 20
1 Product Description
The TPCE261 is a standard height PCI Express Revision 2.0 compatible module that provides one slot for a
single-width PMC module used to build modular, flexible and cost effective I/O solutions for all kinds of
applications like process control, medical systems, telecommunication and traffic control. The TPCE261 is a
versatile solution to upgrade well known PMC I/O solutions to the PCI Express signaling standard.
On the PCI Express side, an x1 link with 2.5GT/s speed to the host board is provided.
The bridging between the system host board and the PMC slot is handled by the transparent PCIe-to-PCI
Bridge XIO2001 from Texas Instruments.
On the PMC side, PCI signaling voltages of 3.3V (TPCE261-x1R) and 5V (TPCE261-x0R) are supported. 32-
bit PCI accesses are possible with 33MHz or 66MHz.
The TPCE261 supports PMC front-panel I/O and also PMC P14 Rear-I/O through a 68-pin ERNI SMC
1.27mm flat cable connector.
The PCIe edge card connector pr12V and +3.3V. All TPCE261-xx variants do not use the +3.3V at
all. The TPCE261-1xR uses the +12V of the PCIe edge card connector to generate all four power supply
voltages for the PMC slot (+3.3V, +5V, +12V and -12V). According to the PCIe specification, a PCIe x1 card
is limited to 6W on the +12V which allows to operate most of the available 32-bit 33/66 MHz PMC modules
on the TPCE261-1xR.
For PMC modules with increased power requirements, the TPCE261-2xR offer an additional PCIe Graphics
Power Connector to supply the +12V for generating all the power supply voltages for the PMC slot providing
a power of up to 25W.
PCIe (x1)
PCI
32 bit
33/66 MHz
PCIe: +3.3V
PCIe: +12V
PCI Express
to
PCI
Bridge
-12V DC
5V DC
3.3V DC
+12V Graphics
Power
Connector
VI/O
+3.3V
+5V
-12V
+12V
TPCE261-2x
TPCE261-1x
TPCE261-x0
TPCE261-x1
I/O
J1
2
J1
1
Figure 1-1 : TPCE261 Block Diagram
