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Chapter 1: Introduction
Chapter 1
Introduction
1-1 Overview of the Nuvoton WPCM450 BMC Controller
The Nuvoton WPCM450, a Baseboard Management Controller (BMC), supports
PCI-based 2D/VGA Graphics cores via PCI interfaces, multi-media virtualization,
and Keyboard/Video/Mouse Redirection (KVMR). The WPCM450 Controller is ideal
for networking management.
The WPCM450 interfaces with the host system via PCI connections to communicate
with the Graphics core. It supports USB 2.0 and 1.1 for remote KVM emulation. It
also provides LPC interface support to control Super IO functions. The WPCM450
is connected to the network via an external Ethernet PHY module or shared NCSI
connections.
The WPCM450 communicates with onboard components via SMBus interface, PECI
(Platform Environment Control Interface) buses, and General Purpose I/O ports.
WPCM450 DDR2 Memory Interface
The WPCM450 Controller supports 16-bit DDR2 memory with a speed of up to 220
MHz. The motherboard supports 128 MB of memory which is shared between the
BMC and onboard graphics card. For best signal integrity, the WPCM450 provides
point-to-point connections.
WPCM450 PCI System Interface
The WPCM450 provides 32-bit, 33 MHz 3.3V PCI interface, which is compliant with
PCI Local Bus Specication Rev. 2.3. The PCI system interface connects to the
onboard PCI Bridge and is used by the graphics controller.
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