Artesyn MVME4100ET Single Board Computer Installation and Use (June 2014) - Manual (Page 75)

Functional Description
MVME4100ET Single Board Computer Installation and Use (6806800K76F) 75
4.9 DUART Interface
The MVME4100ET provides a front access asynchronous serial port interface using Serial Port
0 from the MPC8548E DUART. The TTL-level signals SIN, SOUT, RTS, and CTS from Serial Port 0
are routed through on-board RS-232 drivers and receivers to the mini DB-9 front panel
connector.
4.10 PCI-X Port
The PCI-X port on the MPC8548E connects to the TSi148 VMEbus interface and one PCI-X to
PCI-X bridges, PLX PCI6520. The main PCI bus can be configured for 100 MHz PCI-X or 66 MHz
PCI operation.
The secondary side of the first bridge connects to the two PMC sites and is configured
dynamically, with onboard logic, to operate in 33/66 MHz PCI or 66/100 MHz PCI-X mode
depending on the PMCs installed.
4.10.1 Tsi148 VME Controller
The VMEbus interface for the MVME4100ET is provided by the Tsi148 VMEbus controller. The
Tsi148 provides the required VME, VME extensions, and 2eSST functions. TI SN74VMEH22501
transceivers are used to buffer the VME signals between the Tsi148 and the VME backplane.
Refer to the Tsi148 user's manual for additional details and/or programming information.
4.11 XMC Expansion
The MVME4100ET provides an additional XMC/PMC module capability through the use of a
78-pin stacking connector. This connector is connected to the PCI Express port on the
processor. Up to four additional XMC/PMC modules may be added by using two expansion
boards. Refer to the XMCspan manual for additional details and/or programming information.
4.12 Power Supplies
The MVME4100ET on-board voltages are generated using Linear Tech LTC3828 dual output
two phase controllers and LTC3416 single output controllers. The following sections detail the
MVME4100ET power requirements.