User`s manual

BDM-610000082 Rev A Chapter 1: Introduction 13
Migrating to RTD’s G-Series cpuModules
When migrating to RTD’s AMD G-Series cpuModules, there are several differences from preceding cpuModule
product families of which the customer should be aware.
Connector Pinout & Function Differences
The newer AMD G-Series cpuModules have several connector-related differences, which are summarized below.
Complete information about the connectors on the CMX34GS can be found in Chapter 3, Connecting the
cpuModule.
New I/O Connectors
The CMX34GS cpuModule introduces a new I/O connector that was not present on previous RTD cpuModules:
• DisplayPort (CN19)
– Provides video and audio output
– Unlike legacy LVDS and flat panel connectors which needed to have their BIOS pre-configured
to a specific manufacturer’s flat panel parameters, the DisplayPort connector is compatible with
any display that has a DisplayPort interface.
Connector Differences
While some connectors on the CMX34GS have identical pinouts as on previous cpuModule generations, the
features of the connector are sometimes different. Other connectors have entirely different pinouts than those
on previous cpuModule generations. Connectors with pinout and feature differences include:
• Auxiliary Power Connector (CN3)
– 12 pins (unlike the 10-pin connector on RTD Montevina cpuModules)
– +5V and +12V inputs (unlike +5V only auxilliary power connectors found on all previous RTD
cpuModule generations)
– The Auxilliary Power Connector excludes ATX power signaling. The ATX power signals are
provided on the PCIe/104 Type 2 bus connectors.
• Utility Port 2.0 (CN5)
– Replaces the legacy Utility Port multi-function connector
– Replaces the PS/2 Mouse and Keyboard connections with one USB 2.0 port
– The pinout of the Utility Port 2.0 is not compatible with previous generations of RTD
cpuModules.
• COM Ports (CN7 and CN8)
– Connector CN7 can be configured to output Serial POST codes out of the TXD pin when in
single RS-232 mode (unlike RTD Montevina cpuModules, where the DTR pin was configured for
serial POST code output on the second port of CN7 in dual-port mode). For more information,
refer to Serial Power-On-Self-Test (POST) Code Output on page 73.
– Of all single and dual-port modes, only the single RS-232 pinout is compatible with previous
generations of RTD cpuModules.
– Dual-mode COM port pinouts permit dual RS-232, dual RS-422, and dual RS-485 modes. Unlike
some previous generations of RTD cpuModules, a dual “combined” mode with RS-232 and
RS-422/458 is not supported.
– Unlike some previous cpuModule generations, the single-mode RS-422/485 pinouts of the
CMX34GS do not include the DCD, DSR, DTR, and RI signals.