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PDF ( 数据手册 , 数据表 ) 30057-33

零件编号 30057-33
描述 Geode GXLV Processor Series Low Power Integrated x86 Solutions
制造商 National Semiconductor
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30057-33 数据手册, 描述, 功能
April 2000
Geode™ GXLV Processor Series
Low Power Integrated x86 Solutions
General Description
The National Semiconductor® Geode™ GXLV processor
series is a new line of integrated processors specifically
designed to power information appliances for entertain-
ment, education, and business. Serving the needs of con-
sumers and business professionals alike, it is the perfect
solution for information appliance applications such as
thin clients, interactive set top boxes, and personal inter-
net access devices.
The GXLV processor series is divided into three main cat-
egories as defined by the core operating voltage. Avail-
able with core voltages of 2.2V, 2.5V, and 2.9V, it offers
extremely low typical power consumption (1.0W to 2.5W)
leading to longer battery life and enabling small form-fac-
tor, fanless designs. Each core voltage is offered in fre-
quencies that are enabled by specific system clock and
multiplier settings. This allows the user to select the
device(s) that best fit their power and performance
requirements. This flexibility makes the GXLV processor
series ideally suited for applications where power con-
sumption and performance (speed) are equally important.
Typical power consumption is defined as an average,
measured running Microsoft’s Windows at 80% Active Idle
(Suspend-on-Halt) with a display resolution of 800x600x8
bpp at 75 Hz.
Internal Block Diagram
SYSCLK
Clock Module
SYSCLK
multiplied by
A
Core
Clocks
X-Bus
Clocks
16 KB
Unified L1
Cache
(128)
X86 Compatible Core
Integer
TLB Unit
Instruction
Fetch
MMU
Load/Store
INT/NMI
Interrupt
Control
FP_Error
Floating Point
Unit
INTR
IRQ13
SMI#
C-Bus (64)
SUSP#
SUSPA#
Power
Management
Control
Core Suspend
Core Acknowledge
X-Bus Suspend
X-Bus Acknowledge
X-Bus (32)
Arbiter
Write Buffers
X-Bus Controller
Read Buffers
PCI Host
Arbiter Controller
2D Accelerator
VGA
BLT Engine
ROP Unit
X-Bus Clk ÷ B
Display Controller
Compression Buffer
Palette RAM
Timing Generator
3
REQ/GNT
Pairs
PCI Bus
4
SDRAM
Clocks
64-bit SDRAM
RGB
YUV
Video Companion Interface
National Semiconductor is a registered trademark of National Semiconductor Corporation.
Geode and WebPAD are trademarks of National Semiconductor Corporation.
For a complete listing of National Semiconductor trademarks, please visit www.national.com/trademarks.
© 2000 National Semiconductor® Corporation
www.national.com







30057-33 pdf, 数据表
Table of Contents (Continued)
5.0 Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
5.1 POWER MANAGEMENT FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
5.1.1
5.1.2
5.1.3
5.1.4
5.1.5
5.1.6
System Management Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Suspend-on-Halt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
CPU Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
5.1.3.1 Suspend Modulation for Thermal Management . . . . . . . . . . . . . . . . . . . . . . . . . 177
5.1.3.2 Suspend Modulation for Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
3 Volt Suspend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
GXLV Processor Serial Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Advanced Power Management (APM) Support . . . . . . . . . . . . . . . . . . . . . . . . . . 177
5.2 SUSPEND MODES AND BUS CYCLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
5.2.1
5.2.2
5.2.3
5.2.4
Timing Diagram for Suspend-on-Halt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Initiating Suspend with SUSP# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Stopping the Input Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
Serial Packet Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180
5.3 POWER MANAGEMENT REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
6.0 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
6.1 PART NUMBERS/PERFORMANCE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . 184
6.2 ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
6.2.1
6.2.2
6.2.3
6.2.4
Power/Ground Connections and Decoupling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
6.2.1.1 Power Planes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
NC-Designated Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Pull-Up and Pull-Down Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Unused Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
6.3 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
6.4 RECOMMENDED OPERATING CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
6.5 DC CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
6.5.1 Input/Output DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
6.5.2 DC Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
6.5.2.1 Definition of CPU Power States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
6.5.2.2 Definition and Measurement Techniques of CPU Current Parameters . . . . . . . . 190
6.5.2.3 Definition of System Conditions for Measuring "On" Parameters . . . . . . . . . . . . 191
6.5.2.4 DC Current Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
6.6 I/O CURRENT DE-RATING CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
6.6.1
6.6.2
6.6.3
Display Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Memory Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
I/O Current De-rating Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
6.7 AC CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
7.0 Package Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
7.1 THERMAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
7.1.1 Heatsink Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
7.2 MECHANICAL PACKAGE OUTLINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
www.national.com
8
Revision 1.1







30057-33 equivalent, schematic
Architecture Overview (Continued)
1.7.1 Reference Designs
As described previously, the GXLV series of integrated
processors is designed specifically to work with National’s
Geode I/O and graphics companion devices. To help
define and drive the emerging information appliance mar-
ket, several reference systems have been developed by
National Semiconductor. These GXLV processor based
reference systems provide optimized and targeted solu-
tions for three main segments of the information appliance
market: Personal Internet Access, Thin Client, and Set-
top Box. Contact your local National Semiconductor sales
or field support representative for further information on
reference designs for the information appliance market.
NSC
LM4549
Codec
Geode™
GXLV
Processor
Control
Data
SDRAM
PCMCIA
Flash
Card
Optional
Embedded OS
Applications
Bootloader
Run-Time Diagnostics
Storage
Ultra DMA/33
USB Port
Geode™
CS5530
I/O
Companion
PCI Bus
RF Interface
ISA Bus
Buttons
Pwr Mgmt Microcontroller
DC Sense
Backlight
DSTN
Linear
Flash
(8 MB)
Embedded OS
Applications
Bootloader
Run-Time Diagnostics
Storage
Geode™
CS9210/11
Graphics
Companion
Li Batteries/
Charger
Touch
Control
512 KB DRAM
Figure 1-6. Example WebPAD™ System Diagram
www.national.com
16
Revision 1.1










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