sc3200 Advanced Micro Devices, sc3200 Datasheet - Page 22
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sc3200
Manufacturer Part Number
sc3200
Description
Geode-tm Sc3200 Processor
Manufacturer
Advanced Micro Devices
Datasheet
1.SC3200.pdf
(447 pages)
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2.1.2
The GX1 module communicates with the Core Logic mod-
ule via a Fast-PCI bus that can work at up to 66 MHz. The
Fast-PCI bus is internal for the SC3200 and is connected
to the General Configuration Block (see Section 4.0 on
page 87 for details on the General Configuration Block).
This bus supports seven bus masters. The requests
(REQs) are fixed in priority. The seven bus masters in order
of priority are:
1)
2)
3)
4)
5)
6)
7)
2.1.3
The GX1 module generates display timing, and controls
internal VSYNC and HSYNC signals of the Video Proces-
sor module.
The GX1 module interfaces with the Video Processor via a
video data bus and a graphics data bus.
• Video data. The GX1 module uses the core clock,
• Graphics data. The GX1 module uses the internal
For more information about the GX1 module’s interface to
the Video Processor, see the “Display Controller” chapter
in the AMD Geode™ GX1 Processor Data Book.
2.2
The Video Processor provides high resolution and graphics
for a TFT/DSTN interface. The following subsections pro-
vide a summary of how the Video Processor interfaces with
the other modules of the SC3200. For detailed information
about the Video Processor, see Section 7.0 "Video Proces-
sor Module" on page 327.
22
divided by 2 or 4 (typically 100 - 133 MHz). It drives the
video data using this clock. Internal signals VID_VAL
and VID_RDY are used as data-flow handshake signals
between the GX1 module and the Video Processor.
signal DCLK, supplied by the PLL of the Video
Processor, to drive the 18-bit graphics-data bus of the
Video Processor. Each six bits of this bus define a
different color. Each of these 6-bit color definitions is
expanded (by adding two zero LSB lines) to form an 8-
bit bus, at the Video Processor.
VIP
IDE Channel 0
IDE Channel 1
Audio
USB
External REQ0#
External REQ1#
Fast-PCI Bus
Display
Video Processor Module
Revision 5.1
2.2.1
The Video Processor is connected to the GX1 module in
the following way:
• The Video Processor’s DOTCLK output signal is used as
• The GX1 module’s PCLK output signal is used as the
2.2.2
The Video Input Port (VIP) within the Video Processor con-
tains a standard interface that is typically connected to a
media processor or TV encoder. The clock is supplied by
the externally connected device; typically at 27 MHz.
Video input can be sent to the GX1 module’s video frame
buffer (Capture Video mode) or can be used directly (Direct
Video mode).
2.2.3
The Video Processor interfaces to the Core Logic module
for accessing PCI function configuration registers.
2.3
The Core Logic module is described in detail in Section 6.0
"Core Logic Module" on page 157.
The Core Logic module is connected to the Fast-PCI bus. It
uses signal AD28 as the IDSEL for all PCI configuration
functions except for USB which uses AD29.
2.3.1
The following interfaces of the Core Logic module are
implemented via external balls of the SC3200. Each inter-
face is listed below with a reference to the descriptions of
the relevant balls.
• IDE: See Section 3.4.9 "IDE Interface Signals" on page
• AC97: See Section 3.4.14 "AC97 Audio Interface
• PCI: See Section 3.4.6 "PCI Bus Interface Signals" on
• USB: See Section 3.4.10 "Universal Serial Bus (USB)
• LPC: See Section 3.4.8 "Low Pin Count (LPC) Bus Inter-
the GX1 module’s DCLK input signal.
GFXCLK input signal of the Video Processor.
75.
Signals" on page 80.
page 68.
Interface Signals" on page 76. The USB function uses
signal AD29 as the IDSEL for PCI configuration.
face Signals" on page 74.
GX1 Module Interface
Video Input Port
Core Logic Module Interface
Core Logic Module
Other Core Logic Module Interfaces
AMD Geode™ SC3200 Processor Data Book
Architecture Overview
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