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SST58SM096-70-C-FSI Datasheet(PDF) 5 Page - Silicon Storage Technology, Inc |
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SST58SM096-70-C-FSI Datasheet(HTML) 5 Page - Silicon Storage Technology, Inc |
5 / 40 page Advance Information ATA-Disk Module SST58SM008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 SST58LM008 / 016 / 024 / 032 / 048 / 064 / 096 / 128 / 192 5 ©2001 Silicon Storage Technology, Inc. S71193-01-000 9/01 519 1.0 GENERAL DESCRIPTION The SST’s ATA-Disk Module (ADM) contains a controller, embedded firmware, and Flash Media with a 40-pin or 44- pin female connector. Refer to Figure 1-1 for SST’s ADM block diagram. The controller interfaces with the host sys- tem allowing data to be written to and read from the Flash Media. 1.1 Performance-optimized ATA Controller The heart of the ADM is the ATA controller which translates standard ATA signals into Flash Media data and controls. SST’s ADM contains a proprietary ATA controller specifi- cally designed to attain high data throughput from host to Flash. The following components contribute to the ATA con- troller’s performance. 1.1.1 Microcontroller Unit (MCU) The MCU translates ATA commands into data and control signals required for flash memory operation. 1.1.2 Internal Direct Memory Access (DMA) The ATA controller inside ADM uses DMA allowing instant data transfer from buffer to memory. This implementation eliminates microcontroller overhead associated with tradi- tional, firmware based, memory control, increasing data transfer rate. 1.1.3 Power Management Unit (PMU) Power Management Unit controls the power consumption of the ADM. The PMU dramatically extends product battery life by putting the part of the circuitry that is not in operation into sleep mode. 1.1.4 SRAM Buffer A key contributor to the ATA controller performance is an SRAM buffer. The buffer optimizes the data writes to Flash. 1.1.5 Embedded Flash File System Embedded Flash File System is an integral part of the SST’s ATM controller. It contains MCU Firmware that per- forms the following tasks: 1. Translates host side signals into Flash Media Writes and Reads. 2. Provides Flash Media wear leveling to spread the Flash writes across all the memory address space to increase the longevity of Flash Media. 3. Keeps track of data file structures. 1.1.6 Error Correction The ATA Controller contains ECC algorithm that corrects 3 bytes of error per 512 Byte sector. FIGURE 1-1: SST ATA-DISK MODULE BLOCK DIAGRAM 519 ILL1-1.4 40 or 44-Pin Male IDE Connector 40 or 44-Pin Female IDE Connector PC Mother Board ATA Controller Flash Media Embedded Flash File System MCU ECC Internal DMA SRAM Buffer PMU ATA-Disk Module |
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