Table 21. Video Memory Interface - Intel SE7520AF2 Technical Product Specification

Functional Architecture
3.4.7.2 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 manner that ensures display integrity
and maximum CPU/coprocessor drawing performance.
The Intel® Server Board SE7520AF2 supports an 8MB (512Kx32bitx4 banks) SDRAM device
for video memory. The following table shows the video memory interface signals:
3.4.7.3 Host Bus Interface
The ATI* Rage XL supports a PCI 33 MHz bus. The following diagram shows the signals for the
PCI interface:
66

Table 21. Video Memory Interface

Signal Name I/O Type
CAS# O
CKE O
CS#[1..0] O
DQM[7..0] O
DSF O
HCLK O
[11..0] O
MD[31..0] I/O
RAS# O
WE# O
Intel order number C77866-003
Intel® Server Board SE7520AF2 TPS
Description
Column Address Select
Clock Enable for memory
Chip Select for memory
Memory Data Byte Mask
Memory Special Function Enable
Memory Clock
Memory Address Bus
Memory Data Bus
Row Address Select
Write Enable
Revision 1.2