Video Memory Interface; Host Bus Interface; Figure 7. Video Controller Pci Bus Interface - Intel SE7525RP2 Technical Manual

Intel® Server Board SE7320EP2 / Intel® Server Board SE7525RP2 TPS
PCI I/O Subsystem
5.2.2

Video Memory Interface

The memory controller subsystem of the ATI Rage XL arbitrates requests from direct memory
interface, the VGA graphics controller, the drawing coprocessor, the display controller, the video
scalar, and hardware cursor. Requests are serviced in a way that ensures display integrity and
maximum CPU/coprocessor drawing performance.
The board supports an 8MB (512K x 32-bit x four banks) SDRAM device for video memory.
5.2.3

Host Bus Interface

The ATI Rage XL supports a PCI33 MHz bus. The following diagram shows the signals for the
PCI interface:
Revision 1.0
PCI Bus
PCICLK
AD[31..0]
C/BE#[3..0]
PAR
FRAME#
IRDY#
IDSEL
PCIRST#
TRDY#
STOP#
INTR#
DEVSEL#
REQ#
GNT#

Figure 7. Video Controller PCI Bus Interface

Intel order number D24635-001
Video
CPUCLK
AD[31..0]
C/BE[3..0]
PAR
FRAME#
IRDY#
IDSEL
RESET#
TRDY#
STOP#
INTR#
DEVSEL#
REQ#
GNT#
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