The Zippy2 (KSZ8851SNL-BBE-EVAL) 10/100 Ethernet Combo Board is an expansion board for the BeagleBoard that adds an Ethernet interface, a second SD/MMC memory card interface,
a battery backed-up Real Time Clock, a second RS-232 serial port, and a
I²C expansion interface (5V).
The Zippy2 board is compatible with all revisions of the BeagleBoard (both Rev B and Rev C BeagleBoards).
The Zippy2 provides a standard 10/100BaseT interface (10/100 Megabit)
and uses the Micrel KSZ8851SNL SPI to Ethernet controller.
The Zippy2 provides a second SD/MMC interface. The interface supports both 3.3V and 1.8V memory cards.
Real Time Clock
The Zippy2 provides a battery backed-up Real Time Clock (RTC). The
backup power is provided by a small 3V lithium coin battery and is held
in place by a battery holder.
Compatible 3V Lithium Coin Batteries:
Battery cell size = 12mm.
The RTC battery is not included.
RS-232 Serial Port
The Zippy2 provides a second RS-232 serial port for the BeagleBoard.
There are two serial connectors provided. Either connector is available
for use: 1) standard DB9 Male connector, or 2) 2x5 shrouded header (0.1
inch pin spacing).
I²C Expansion Interface
The Zippy2 provides a expansion connector (4 pin header) for access to
the BeagleBoard I²C signals. The signals have been level translated to
5V to allow easy connection to standard 5V peripherals.
I²C expansion header pin assignments:
- pin 1 - +5V Power
- pin 2 - SDA (5V signal level)
- pin 3 - SCL (5V signal level)
- pin 4 - Ground
Board size = 3.0 inches x 3.1 inches (same size as the BeagleBoard).
Each Zippy2 board comes with the following:
- Four (4) board standoffs
- Four (4) board to board spacers
- Eight (8) screws
- 1 male expansion connector (2x14 male header - unshrouded) that
will need to be soldered into the BeagleBoard's expansion header.