CS22210 データシートの表示（PDF） - Cirrus Logic
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CS22210 Datasheet PDF : 31 Pages
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2 Features
Embedded ARM Core and System Support Logic
• High performance ARM7TDMI RISC processor core at 77MHz
• 4KB integrated, one-way set associative, unified, write through cache
• Individual interrupt for each functional block
• Two 23-bit programmable (periodic or one-shot) general purpose timers
• 8 Dword (32-bits) memory write and read buffers for high system performance
• Abort cycle detection and reporting for debugging
• ARM performance monitoring function for system fine-tuning
• Programmable performance improvement logic based on system configuration
• Flexible independent DMA engines for PCI, USB and digital radio functional units
Enhanced Memory Controller Unit
• Programmable memory controller unit supporting SDRAM /async SRAM/boot ROM interface
• 16-bit data bus with 12-bit address supporting up to 4MB at up to 103MHz SDRAM
• 8-bit data bus with addressing support up to 1MB of boot ROM/Flash
• Programmable SDRAM timing and size parameters such as CAS latencies and number of banks
columns and rows
FEC codec
• High performance Reed-Solomon coding for error correction (255:239 block coding)
• Reduces symbol error probability of a typical 10e-3 error rate environment to 10e-9
• Programmable rate FEC engine to optimize channel efficiency
• Low latency, fully pipelined hardware encoding and decoding. Support byte wise single cycle throughput
up to 77MHz, with a sustain rate of 77MBps.
• Double buffering (64 Dword read/write buffer) to enhance system performance
• On the fly configuration of encoder and decoder
Digital Wireless Radio MAC
• Standard interface to 802.11b radio baseband transceiver
• 11Mbps data rate
• 32 Dword transmit/receive FIFO
• Supports clear channel assessment (CCA)
Power Management
• Host (PCI or USB) ACPI compliant
• Remote USB host wakeup
• Supports variable rate radio transmit, receive and standby radio power modes through two DACs
Clock and PLL Interface
• Single 44MHz crystal oscillator reference clock for PCI version; 48MHz reference clock required in USB
option
• Internal PLL to generate internal and on board clocks
CS22210 PCI/USB Wireless Controller
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