PM8388 preview 24-port sas expander sxp 24x3g pmc-2041219 proprietary and confidential to pmc - sierra, inc., ? copyright pmc-sierra, inc. 2004 issue 1 and for its customers? internal use all rights reserved. block diagram mux datapath (ecr) 25x25 xbar arbiter ecm bpp reference clock system reset phy serdes sxl rx0 +/- tx0 +/- rx1 +/- tx1 +/- rx2 +/- tx2 +/- rx22 +/- tx22 +/- rx23 +/- tx23 +/- phy serdes sxl ... ... ... req/ req_snd sgpio clock sgpio load sgpio data out sgpio data in sgpio uart twi clock twi data twi reset multi- master two wire i/f (3) csu phy serdes sxl phy serdes sxl phy serdes sxl uart data out uart data in request to send clear to send pack 32-bit mips core 128k scratch ram local bus i/f smp ses address bus data bus write enable output enable chip enable interrupt interrupt controller 32k cache bridge ejtag debug port tdbg tdo tdi tms tck trstb timers PM8388 sxp 24x3g features general ? flexible 24-port sas expander device virtual ssp target/initiator port low-latency connection arbitration supports table routing of 1024 entries, direct routing and subtractive routing integrated a non-blocking cross bar switch allowing any-port to any-port connections arbitrary sas wide port configurations stp bridge function allows either sas or sata target devices to be attached to any port integrated risc processor for sas smp functions and ses support three configurable multi-master or slave mode twi interfaces for device configration and control of external interfaces uart interface for debugging support sff-8485 compliant serial gpio (sgpio) interface provides expansion for up to 144 gpios high-speed i/o 1.5 gbit/s and 3.0 gbit/s operation automatic negotiation of link speed accepts spread spectrum clocking (ssc) from sata hdds programmable transmit pre-emphasis and receiver equalization programmable transmit output swing to support both sata and sas levels integrated resistive termination and receiver ac coupling statistics & performance monitoring per-port error counters to provide comprehensive diagnostic functions programmable performance monitoring counters and interrupt generation each link incorporates prbs and cjpat pattern generators and checkers for link-integrity diagnostics physical built in 0.13 m (1.2 v core and 3.3 v i/o supply) cmos technology packaged in a 27 mm x 27 mm 352-pin csbga applications sas/sata storage enclosure sas fanout expander firmware development kit ses api for utilizing ses pages and commands over the sas link scsi-3 api for underlying access to the sas port sas link layer, smp & ssp transport layer protocols smp routing management including topology discovery api for downloading firmware over the sas link expander diagnostics api disk spin-up control peripheral drivers for twi, uart, sgpio, timer third-party support threadx operating system from green hills software or express logic multi development environment and ejtag emulator from green hills software
head office: pmc-sierra, inc. 8555 baxter place burnaby, b.c. v5a 4v7 canada tel: 1.604.415.6000 fax: 1.604.415.6200 24-port sas expander to order documentation, send email to: document@pmc-sierra.com or contact the head office, attn: document coordinator pmc-2041219 (v1) ? copyright pmc-sierra, inc. 2004. all rights reserved. july 2004. for a complete list of pmc-sierra?s trademarks and registered trademarks, visit: http://www.pmc-sierra.com/legal/ proprietary and confidential to pmc-sierra, inc., and for its customers? internal use PM8388 sxp 24x3g all product documentation is available on our web site at: http://www.pmc-sierra.com for corporate information, send email to: info@pmc-sierra.com fanout expander application server 0 server 3 server 1 server 2 ... ... sxp 24 x3g PM8388 sxp 12x3g pm8383 sxp 12x3g pm8383 typical applications sas hdd enclosure application slot sense & control leds fan sense & control power supplies & ups control card for side b sas 4 x wide link additional disk racks co n trol card for side disk shelf temp sense twi gpio sas 4 x wide link sas 4 x wide link additional disk racks cts 18 x 4 g pm 8378 sxp 24 x 3 g temp sense twi gpio sas 4 x wide link cts 18 x 4 g sxp 24 x 3 g pm 8388 pm 8388 gpio fanout gpio fanout sgpio or twi sgpio or twi flash memory or sdram disk 0 disk 1 d isk 2 disk 13 disk 14 disk 15 . . .
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