cisco-sx220

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Cisco SG220 / SF220 Series

Model SoC PoE Comment
SG220-50
SG220-50P
SG220-26 RTL8382M
SG220-26P RTL8382M
SF220-24 10/100 ports only
SF220-24P 10/100 ports only
SF220-48 10/100 ports only
SF220-48P 10/100 ports only

All models share the same firmware image. The image format is the same as the bix format, used by the Zyxel GS1900 series switches.

The SG220-26 and SG220-26P appear to use the same board, although some components related to the PoE management are missing on the SG220-26's main board

  • 2× RTL8218B PHYs
  • RTL8214FC SFP PHY
  • 3× RTL8231 GPIO extenders
  • Winbond W631GU8MB (128MiB DDR3 SDRAM)
  • Macronix MX25L25635F, Winbond 25Q256FVFG (32MiB SPI flash)
  • Sipex SP3232, ADM3202 RS-232 transceiver

JTAG

The JTAG header uses the MIPS eJTAG pin-out, with pin 12 bound to ground.

      +-J4-----+
TRST# |  1   2 | GND
  TDI |  3   4 | GND
  TDO |  5   6 | GND
  TMS |  7   8 | GND
  TCK |  9  10 | GND
SRST# | 11  12 | GND
  N/C | 13  14 | VCC
      +--------+

Board pictures

Board Pictures
SG220-26P overview SG220-26P overview
SG220-26 main board SG220-26 main top
SG220-26P main board SG220-26P main top SG220-26P main board backside SG220-26P detail: flash, RAM, DC/DC SG220-26P I/O, SFP phy
SG220-26P PoE daughter board SG220-26P PoE board SG220-26P PoE board backside SG220-26P PoE management chip
SG220-26P I/O daughter board SG220-26P I/O daughter board SG220-26P I/O daughter board backside
SG220-26P serial daughter board SG220-26P serial port daughter board SG220-26P serial port daughter board backside
  • cisco-sx220.1602966224.txt.gz
  • Last modified: 2020/10/17 20:23
  • by svanheule