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Storage controller LSI first to include USB software

Posted: 13 Jun 2007 ?? ?Print Version ?Bookmark and Share

Keywords:USB 2.0? storage controller IC?

Seiko Epson Corp. has developed the S1R72U16, a storage controller LSI that is compatible with high-speed USB2.0 and claimed to be the first to include USB 2.0 software.

Because of the USB 2.0 software, components such as USB protocol host stack, mass storage class and HUB class, is already included in the on-board chip, thus users need not develop new USB2.0 software.

The chip offers high speed data transfer rate of over 240Mbps through the connection of ATA100 to high-speed USB 2.0. S1R72U16 also enables easy connection with a system. This is achieved by connecting the S1R72U16 with the system's IDE bus or a 16bit general-purpose CPU bus (memory bus). Moreover, a thoroughly comprehensive development support environment is provided to alleviate the user's development burden, said Epson.

The IDE interface of the storage controller IC features a shared terminal with CPU interface, switch by means of externally provided terminal and is compatible with ATA/ATAPI 6.

The CPU interface is shared terminal with IDE interface, switch by means of externally provided terminal. The chip has a 16bit general-purpose CPU interface (memory bus), equipped with DMA and capable of supporting little endian.

The chip has a clock input of 12MHz and 24MHz crystal oscillator compatibility (1M internal feedback and oscillator circuit). Its power supply voltage specifications are as follows: USB 3.3V, IDE 3.3V, (CPUIF: 1.8-3.3V) and internal 1.8V. The device operates from -40C to 85C.

S1R72U16F14E100 model is housed in 80-pin QFP with 12mm?, 0.5mm pitch. Meanwhile, the S1R72U16B08E100 is packaged in a PFBGA housing measuring 8mm?, 0.8mm pitch.

Samples of the S1R72U16 will are now shipping. However, CPU interface is currently being evaluated.

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