Geode™ CS1301/CS1311 Multimedia Companion: Media Coprocessor
November 2002
Revision 2.3
Geode™ CS1301/CS1311 Multimedia Companion:
Media Coprocessor
General Description
The National Semiconductor
®
Geode™ CS1301 and
CS1311 multimedia companions act as coprocessors to
decode multimedia in National’s Geode single chip proces-
sor-based systems (i.e., SC1200/SC1201, SC2200, and
SC3200, hereafter referred to as SCx200). They provide a
multimedia experience for an Information Appliance (IA)
user that cannot typically be achieved on a PC.
By implementing a dedicated coprocessor to perform multi-
media tasks, a high quality video viewing experience can
be achieved. This high quality is achieved by having a
coprocessor architecture that is ideally suited for decoding
digital media. In addition, since the decoding is not occur-
ring on the SCx200, system events cannot interrupt the
coprocessor’s task of decoding media that can cause stut-
tering of sound or interruptions in the video.
Lower power consumption can also be achieved using the
SCx200/CS1301 or SCx200/CS1311 solution. The
CS1301/CS1311 has an architecture specifically designed
for decoding media. The architecture is such that while
decoding media, power is not consumed by portions of the
system that are not used to decode media. Since the
SCx200 is not decoding the media locally, it is able to go
into a lower power state. When the CS1301/CS1311 is not
decoding media, it uses almost no power.
Additionally, since the architecture is designed for decoding
media, fewer CS1301/CS1311 cycles are required.
Internal Block Diagram
SDRAM
32-Bit Data
(up to 664 MB/sec)
Main Memory Interface
CCIR-656 Digital Video
YUV 4:2:2 up to 81 MHz
(40 Mpix/sec)
Stereo Digital Audio
8/16-bit data I
2
S DC,
up to 22 MHz AI_SCK
Huffman Decoder
Slice-At-A-Time
MPEG-1 & 2
Video In
Video Out
Audio Out
S/PDIF Out
ACCESS.bus
Interface
CCIR-656 Digital Video
2/4/6/8 Ch. Digital Audio
16/32-Bit Data I
2
S DC,
up to 22 MHz AO_SCK
IEC958 up to 40 Mbit/sec
ACCESS.bus Interface
to EEPROM
Audio In
VLD
Coprocessor
Timers
Synchronous
Serial Interface
32K I$
16K D$
Smart Card
VLIW
CPU
Image
Coprocessor
Down and Up Scaling
YUV --> RGB
(50 Mpix/sec)
PCI Interface
External Bus
PCI V2.1 (32 bits, 33 MHz)
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Geode is a trademark of National Semiconductor Corporation.
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© 2002 National Semiconductor Corporation
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Geode™ CS1301/CS1311
Features
General Features
■
Physical
VLD Coprocessor
■
Parses MPEG-1 and MPEG-2 elementary bit streams
— Process 0.25-micron CMOS
— Packaged in a 292-terminal TEPBGA (Thermally
Enhanced Plastic Ball Grid Array)
■
Power supply:
generating run-level pairs and filling macroblock headers
Timers
■
Four 32-bit wide timers
— CS1301: 2.5V Core; 3.3V I/O (5V tolerant)
— CS1311: 2.2V Core; 3.3V I/O (5V tolerant)
■
Consumption 1300 mA; 3.5W
■
Power-down 300 mA
■
Case Temperature 0° to 85°C
Input/Output Support
■
PCI Interface:
—
—
—
—
PCI 2.1 compliant
Speed 33 MHz
Bus width 32 bits
Voltage drive and receive at 3.3V
Central Processing Unit
■
Clock speed:
■
Audio In (AI):
— CS1301: 180 MHz
— CS1311: 166 MHz
■
Instruction length variable (2 to 23 bytes)
■
Instruction set arithmetic and logical operations,
— Two I
2
S compliant channels
— Sample size 8 or 16-bit samples per channel
■
Audio Out (AO):
— Eight I
2
S compliant channels
— Sample size 16- or 32-bit samples per channel
■
Video In (VI):
load/store operations, special multimedia and DSP oper-
ations, IEEE compliant floating point operations
■
27 pipelined functional units
Caches
■
Data 16 KB, instructions 32 KB
— Supported signals CCIR-601/656:
– 8-bit video (up to 40 Mpix/sec)
— Image sizes all sizes, subject to sample rate
— Provides programmable on-the-fly 2X horizontal
resolution subsampling
■
Video Out (VO):
Memory System
■
Speed 166 MHz SDRAM
■
CPU/memory programmable; 1:1, 5:4, 4:3, 3:2, and 2:1
speed ratios
■
Memory size 512 KB to 64 MB (up to four banks)
■
Recommended configurations:
— 16 MB: Two 4M x 16 or two 2M x 32
— 32 MB: Four 2M x 32 or four 4M x 16
■
Width 32-bit bus
■
Max. bandwidth 664 MB/sec (at 166 MHz)
— Image sizes flexible, including CCIR-601; max.
4K x 4K pixels (subject to 80 MB/sec data rate)
— Outputs CCIR-601/656 8-bit video, PAL or NTSC
— Clock rates programmable (4-80 MHz), typical
27 MB/sec (13.5 Mpix/sec for NTSC and PAL or
40 Mpix/sec in YUV 4:2:2 mode)
— Features full 129-level alpha blending, GenLock
mode, frame synchronization chroma key,
programmable YUV color clipping
■
S/PDIF Out:
— Number of channels up to 6
— Sample size 16 or 24 bits per channel
— IEC-958, output up to 40 Mbits/sec
■
ACCESS.bus Interface:
Image Coprocessor
■
Scaling programmable scale factor (0.2X to 10X) using
5-tap filters:
— Horizontal or vertical scaling and filtering of individual
Y, U, or V
— Horizontal scaling and filtering with color conversion
and overlay
— YUV to RGB, RGB overlay and alpha blending, bit
mask blanking
— Supported modes single master only
— Addressing 7-bit
— Rates up to 400 Kbps
■
SYNCHRONOUS SERIAL INTERFACE
— Flexible bit serial connection
— Full duplex
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2
Revision 2.3
Geode™ CS1301/CS1311
Table of Contents
1.0
System Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
1.2
IMPORTANT DESIGN NOTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.1
Software Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2.2
Software Features Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.0
Signal Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
2.2
BALL ASSIGNMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SIGNAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1
System Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.2
Memory Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.3
PCI Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.4
Video In Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.5
Video Out Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.6
Audio In Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.7
Audio Out Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.8
S/PDIF Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.9
ACCESS.bus Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.2.10 JTAG Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.11 Test and Measurement Interface Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.12 Synchronous Serial Interface (SSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.2.13 Power, Ground, and No Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
REFERENCE VOLTAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.3
3.0
Package Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Support Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Appendix A
A.1
A.2
ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PRODUCT BRIEF REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Revision 2.3
3
www.national.com
Geode™ CS1301/CS1311
1.0
System Architecture
1.2
SOFTWARE
The CS1301/CS1311 multimedia companion acts as a
coprocessor to decode multimedia in National’s Geode
SC1200/SC1201, SC2200, and SC3200 (SCx200 unless
otherwise specified). Figure 1-1 provides a typical system
block diagram.
Media decoding is one of the most demanding system
applications. If media is decoded on the main processor, a
much higher performance processor is required to achieve
even comparable levels of media decoding quality. Such a
system would be significantly over-designed for other
tasks, such as browsing the Internet. Using a low-cost pro-
cessor that is ideally suited for all tasks, and adding the
coprocessor for the high performance media decoding
requirement, results in a cost-effective solution.
Another advantage of an processor/coprocessor solution is
that an OEM (Original Equipment Manufacturer) can pro-
vide a scalable solution. A single board can be designed
that supports the coprocessor. If it is desired to support a
low-end product that does not support the high quality
media decoding capabilities, the coprocessor and its sup-
porting components can be excluded from the system,
which results in additional savings in an already cost-effec-
tive design.
The CS1301/CS1311 software and reference schematic is
provided for a system that decodes media quickly with no
original software development needed. As part of the
CS1301/CS1311 purchase (see Section A.1 "Ordering
Information" on page 21 for purchase details), National will
license for the use of the operating system drivers and
media decoder codecs in object form, which include:
•
Communications manager driver.
•
Video filter: Takes the video from the VIP (Video Input
Port) of the Geode SCx200 and plays it back through the
operating system media player.
•
Various multimedia codecs.
1.2.1 Software Support
National provides a reference schematic and the associ-
ated software for a processor/coprocessor solution using
the Geode SCx200 and the CS1301/CS1311. This imple-
mentation is currently supplied as a multimedia decoder for
CE player under Microsoft Windows CE.net or Linux.
Future support for Microsoft Windows XP is planned. Since
this is a software-based DSP (Digital Signal Processor)
coprocessor rather than strictly a silicon-based coproces-
sor, the software can be upgraded to support evolving
media standards without a redesign of the hardware.
1.2.2 Software Features Support
For the currently supported system architectures and a
complete list of supported MultiMedia codecs see the
“CS1301/CS1311
MultiMedia Companion: System Archi-
tecture and Software Solution”
document.
1.1
IMPORTANT DESIGN NOTE
The CS1301/CS1311 was designed to be a general pur-
pose media data processor. As such, the CS1301/CS1311
is capable of far more than the current National CS1301/
CS1311 solution. National is providing the device as part of
a complete solution and supporting these target solutions
only. Refer to the document titled “CS1301/CS1311
Multi-
Media Companion: System Architecture and Software
Solution”
for the National Semiconductor supported solu-
tion.
SDRAM
Flash or
M-Systems’
DiskOnChip
XpressROM
BIOS
Control
IDE
CompactFlash
Data
AMP
LM4880
Sub-ISA
Codec
LM4549
CCIR
-
656 VIP
WM8725
DAC
PCI Bus
USB 1, 2, 3
Geode
SCx200
TM
IRDA
SDRAM
Geode
TM
CS1301/
CS1311
Display: TV, CRT, or TFT
EEPROM
Figure 1-1. System Block Diagram
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4
Revision 2.3
Geode™ CS1301/CS1311
2.0
Signal Definitions
This section defines the signals and describes the external
interface of the CS1301/CS1311 media companion. Figure
2-1 shows the signals organized by their functional groups.
The remaining subsections of this chapter describe:
•
Section 2.1 "Ball Assignments": Provides a ball assign-
ment diagram and tables listing the signals sorted
according to ball number and alphabetically by signal
name.
•
Section 2.2 "Signal Descriptions": Detailed descriptions
of each signal according to functional group.
•
Section 2.3 "Reference Voltages": Discussion on ball
reference voltages.
nected; all pins that drive a clock should drive a series
resistor.
Table 2-1 shows the types of I/O circuits used by the
CS1301/CS1311 devices. Note that the # symbol in a sig-
nal name indicates that the active or asserted state occurs
when the signal is at a low voltage level. Otherwise, the sig-
nal is asserted when at a high voltage level.
Table 2-1. Ball Type Descriptions
Modes
I
O
OD
Description
Input only, except during boundary scan.
Output only, except during boundary scan.
Open Drain output, active pull low, no active
drive high, requires external pull-up.
Input or Output.
Input with Open Drain output, active pull low,
no active drive high, requires external pull-up.
2.1
BALL ASSIGNMENTS
I/O
I/OD
The CS1301/CS1311 has a total of 169 functional pins,
excluding V
DDQ
, V
SSQ
, VREF_PCI, VREF_PERIPH, and
digital power/ground. For pins with 5.0V input capability, the
VREF_PCI or VREF_PERIPH determines 3.3V or 5.0V
input tolerance. Unused pins can remain floating/uncon-
System
Interface
TRI_CLKIN
TRI_USERIRQ
TRI_TIMER_CLK
TRI_RESET#
VREF_PCI
VREF_PERIPH
MM_CLK [ 1:0]
MM_A [13:00]
MM_DQ [ 31: 00]
MM_CKE[1:0]
MM_CS[ 3:0] #
MM_RAS#
MM_CAS#
MM_WE#
MM_DQM[ 3:0]
PCI_CLK
PCI_AD [31: 00]
PCI_C/BE[3:0]#
PCI_PAR
PCI_FRAME#
PCI_IRDY#
PCI_TRDY#
PCI_STOP#
PCI_IDSEL
PCI_DEVSEL#
PCI_REQ#
PCI_GNT#
PCI_PERR#
PCI_SERR#
PCI_INTA#
PCI_INTB#
PCI_INTC#
PCI_INTD#
IIC-SDA
IIC-SCL
VI_CLK
VI_DVALID
VI_DATA[09:00]
VO_CLK
VO_IO[2:1]
VO_DATA[07:00]
Video In
Interface
Video Out*
Interface
Audio In*
Interface
Audio Out
Interface
S/PDIF
Interface
JTAG
Interface
Test and
Measurement
Interface
Synchronous
Serial Interface
Geode™
CS1301/CS1311
Memory
Interface
AI_OSCLK
AI_SCK
AI_SD
AI_WS
AO_OSCLK
AO_SCK
AO_SD[4:1]
AO_WS
SPDO
JTAG_TDI
JTAG_TDO
JTAG_TCK
JTAG_TMS
BOOT_CLK
TESTMODE
SCANCPU
SSI_CLK
SSI_RXFSX
SSI_RXDATA
SSI_TXDATA
SSI_IO1
SSI_IO2
V
DDQ
V
SSQ
(Total of 24) V
DD
(Total of 40) V
CC
(Total of 55) V
SS
(Total of 2) NC
PCI Bus
Interface
ACCESS.bus
Interface
Power, Ground
and No
Connections
*Video In and Audio In are supported by third party software solutions, not by the National Semiconductor solution.
Figure 2-1. Functional Block Diagram
Revision 2.3
5
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