
© 2009 Advanced Micro Devices, Inc.
45732 AMD 780E Databook 3.10
Proprietary
2-1
Chapter 2
Functional Descriptions
This chapter describes the functional operation of the major interfaces of the RS780E system logic.
Figure 2-1, “RS780E
Internal Block Diagram,”
illustrates the RS780E internal blocks and interfaces.
Figure 2-1 RS780E Internal Block Diagram
2.1
Host Interface
The RS780E is optimized to interface with AMD processors through the HyperTransport
TM
interface. This section
presents an overview of the HyperTransport
interface. For a detailed description of the interface, please refer to the
HyperTransport™
Unit
CPU
In
te
rfa
ce
Register Interface
UVD
Setup
Engine
2D
Engine
3D
Engine
Overlay
Root
MUX
Display 1& 2
CRT
Memo
ry Con
tro
ller
AMD CPU
Bus Interface
Complex
Optional 16-bit
DDR2/DDR3
Memory Channel
TMDS, enabling DVI/HDMI™
SB
External
Graphics
A-Li
nk-E II
Gf
x I
n
te
rfa
ce
*
PC
I-E
In
ter
fac
e
(1x
16 or 2x
8
GP
P
In
te
rfa
ce
PCI
-E
(6 x
1 Lanes)
Expansion
Slots or
On-board
Devices
(1
x 4 Lanes
)
DisplayPort™
(Multiplexed on PCI-E Gfx Lanes)
(Multiplexed on PCI-E Gfx Lanes)
LVDS
TMDS, supporting DVI/HDMI
(Multiplexed on the LVTM interface)
Lanes)