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Cisco SG220 / SF220 Series
Models
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.
SG220-26(P)
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 +--------+