www.diamondsystems.com
Zeta User Manual Rev 1.0
Page 11
A 2x1 connector is provided for connecting an external backup battery to maintain the real-time clock. The
allowable battery voltage range is 3.0
–
3.6VDC.
The backup battery is not required to maintain custom BIOS settings.
4.10
mSATA/PCIe Mini-card Socket
Zeta provies one mSATA/Mini PCIe socket. This socket supports full-size PCIe Minicards and mSATA cards.
4.11
PCIe Link Routing
Zeta base board makes use of 3 PCIe lanes from the COM connector
•
Lane 1
–
MiniPCIe socket
•
Lane 2
–
Second Gigabit Ethernet through i210 Ethernet controller
•
Lane 3
–
EMX expansion socket
•
Lane 4
–
EMX expansion socket (Not available in EmNANO i2300)
4.12
Data Acquisition
Zeta base board provides a data acquisition sub circuit containing analog input, analog output, and digital I/O
features. This circuit is controlled by an FPGA attached to the processor via the LPC bus. A pin header on the
board provides access to JTAG signals for reprogramming the FPGA on the board and in the field.
The data acquisition circuit is based on the Diamond Zeta base board.
Features include:
16 single-ended / 8 differential analog inputs with 16-bit resolution, programmable input ranges, and 100KHz
sample rate;
4 analog outputs with 16-bit resolution and programmable output ranges
27 digital I/O lines with selectable 3.3V/5V logic levels, selectable pull-up/down resistors, programmable
direction, buffered I/O, and capability for use as counter/timer and PWM circuits.
4.13
GPIO
16 GPIO are available via I2C expander circuit (PCA9535) on the digital I/O header for Low cost version, when
Data acquisition circuit is not populated.
4.14
LED Indicators
Zeta provides the following LED indicators.
•
Power on
-Green LED (for 12V, 5V and 3.3V)
•
Power Good
-Green LED for Power Good indication
•
BIOS LED
-Green LED to indicate Module is booted successfully
•
Ethernet
-Green LED for Link, activity, and speed for each port
4.15
Expansion Connector
Zeta supports I/O expansion capability using a high-density 40-pin expansion connector. A daughterboard is
available from Diamond Systems utilizing the expansion signals to provide additional I/O and mass storage
capability. Users can also design their own custom I/O daughterboards to provide custom I/O.
•
Two PCIe x 1 lanes
•
HD Audio interface
•
SATA interface
•
USB2.0 interface
•
I2C interface
5
Mechanical Drawing
