National Semiconductor CS5530A
The CS5530A I/O companion is designed to work in conjunction with a GX-series processor (i.e., GX1, GXLV, GXm); all members of the National Semiconductor® Geode™ family of products. The CS5530A I/O companion is a PCI-to-ISA bridge (South Bridge), ACPI-compliant chipset that provides AT/ISA style functionality. The device contains state-of-the-art power management that enables systems, especially battery powered systems, to significantly reduce power consumption.
| Part No. |
CS5530A |
| Datasheet |
CS5530A
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| Manufacturer |
 National Semiconductor |
| Description |
Geode CS5530A I/O Companion Multi-Function South Bridge |
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GENERAL DESCRIPTION
Together, the Geode processor and CS5530A provide a system-level solution well suited for the high performance needs of a host of devices which include digital set-top boxes and thin client devices. Due to the low power consumption of the GX-series processors, this solution satisfies the needs of battery powered devices such as National’s WebPAD™ system, and thermal design is eased allowing for fanless system design. Audio is supported through PCI bus master engines which connect to an AC97 compatible codec such as the National Semiconductor LM4548. If industry standard audio is required, a combination of hardware and software called Virtual System Architecture® (VSA™) technology is provided. The Geode GX-series processors’ graphics/video output is connected to the CS5530A. The CS5530A graphics/video support includes a PLL that generates the DOT clock for the GX-series processors (where the graphics controller is located), video acceleration hardware, gamma RAM plus three DACs for RGB output to CRT, and digital RGB that can be directly connected to TFT panels or NTSC/PAL encoders.
