82845PE Datasheet, PDF (11/176 Pages) Intel Corporation – 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)

Intel^® 82845GE GMCH / 82845PE MCH
Features
I Host Interface Support
— One processor in a mPGA478 package
— Hyper-Threading Technology support
— 400/533 MHz PSB (100/133 MHz bus clock)
— PSB Dynamic Bus Inversion on the data bus
— 32-bit addressing for access to 4 GB of memory space
— 8 deep In Order Queue
— AGTL+ On-die Termination
I System Memory Controller
— One 64-bit wide DDR SDRAM data channel
— Up to 2.0 GB of 266/333 MHz DDR SDRAM
— Bandwidth up to 2.7 GB/s (DDR333)
— 64-Mb, 128-Mb, 256-Mb, and 512-Mb SDRAM
technologies
— Supports only x8 and x16 SDRAM devices with four
banks
— Unbuffered, unregistered 184-pin non-ECC DDR
SDRAM DIMMs only
— Two DDR DIMMs, single-sided and/or double-sided
— Does not support double-sided x16 DDR DIMMs
— JEDEC DDR DIMM specification configurations only
— Opportunistic refresh
— Up to 16, simultaneously open pages
— SPD (Serial Presence Detect) scheme for DIMM
detection
— Suspend-to-RAM support using CKE
— Selective Command-Per-Clock (selective CPC) accesses
I Hub Interface
— Supports Hub Interface 1.5
— 266 MB/s point-to-point Hub Interface to the ICH4
— 66 MHz base clock
— 1.5 V operation
I AGP Interface
— Supports a single 1.5 V Accelerated Graphics Port
Interface, Specification 2.0-compliant device
— Supports 1X/2X/4X data transfers and 2X/4X Fast
Writes
— 32-deep AGP request queue
— AGP signals muxed with two Intel^® DVO ports:
Supports ADD cards (82845GE only)
I Integrated Graphics (82845GE only)
— Core Frequency of 266 MHz
— 3D Setup and Render Engine
- Discrete Triangles, Strips and Fans Support
- Indexed Vertex and Flexible Vertex Formats
- Pixel Accurate Fast Scissoring and Clipping Operation
- Backface Culling Support
- Supports D3D and OGL Pixelization Rules
- Anti-Aliased Lines Support
- Sprite Points Support
— High Quality Texture Engine (see Section 1.4.5)
— 3D Graphics Rasterization Enhancements (see
Section 1.4.5)
— 2D Graphics (see Section 1.4.5)
— Video DVD/PC-VCR (see Section 1.4.5)
— Video Overlay (see Section 1.4.5)
I Analog Display Support (82845GE only)
— 350 MHz Integrated 24-bit RAMDAC
— Up to 2048x1536 at 60 Hz refresh
— Hardware Color Cursor Support
— DDC2B Compliant Interface
I Digital Display Channels (82845GE only)
— Two channels multiplexed with AGP
— 165 MHz dot clock on each 12-bit interface
— Can combine two, 12-bit channels to form one 24-bit
interface: Supports flat panels up to 2048x1536 at 60 Hz
or dCRT/HDTV at 1920x1080 at 85 Hz
— Supports Hot Plug and Display
— Supports LVDS, TMDS transmitters or TV-out encoders
— ADD card utilizes AGP connector
— Three Display Control interfaces (I2C/DDC)
multiplexed on AGP
I Package
— 37.5 mm x 37.5 mm FC-BGA package with 1 mm ball
pitch
Intel^® 82845GE/82845PE Datasheet
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