<box 300px right | **Project details**>
^ Name: | GECKO3docking ||
^ Maintainer| [[gecko-platforms:gecko3_docking:orphaned]]||
^ Revision: | 01.2009 ||
^ Development status: | stable ||
^ Compatibility: |GECKO3 / GECKO4 (untested) || 
</box>

====== GECKO3 docking ======

The docking board was developed for SoPC applications in combination with the powerful [[gecko3:gecko3main:start|GECKO3main]] you get a smart platform for your development projects.

{{ :gecko-platforms:gecko3_docking_empty.jpg?400 |}}{{ gecko3:gecko3_docking:gecko3_docking_with_main.jpg?400 |}}

===== Features =====
  * RS232 as a debug interface (with Rx/Tx crossing)
  * Ethernet (RJ 45) for network communication
  * RS232 for serial communication (without level converter)
  * Micro SD-Card reader over SPI (shared with SPI 1)
  * Three SPI connectors
  * One I2C connector
  * 4 Bytes length matched GPIOs (max. 1 mm difference)
  * GPIO header is compatible to Agilent connector (with clk and power included)
  * VBAT On-board or external powering
  * Two external ckl inputs (SMA, Agilent header or DIP 8 Socked)
  * Board powering by a standard adapter with a voltage range of 10V up to 18V 

==== Signalization ====
  * LED red   : powered by the adapter
  * LED green : power good (on if power is good / off if power is less than 90% of 3.3V)


===== Interface description =====
{{ :gecko-platforms:gecko3_docking:gecko3doking_expl.png?800 |}}

==== External clock imputs ====
The external clock inputs are connected to some special clock pins on the FPGA on the GECKO3main module. That allows us to maintain better timings.
There is a DIP8 socket on input JP3 (EXTCLK1) that can be used to produce a clock.
If the GECKO4main module is connected, make sure you comply with the clock specifications ([[gecko4:gecko4main:external_clocks|]]). 
===== Schematic =====
{{:gecko-platforms:gecko3_docking:gecko3doking.pdf|}}

===== Pins on IO-Bus 1 connector =====

^Pin      ^ Name    ^ Direction  ^GECKO3  ^GECKO4  ^Discription ^  ^
|EXTCLK1  | EXTCLK1 | IN         | AE13   | AF14 (Lock: AA9)   |External clock input 1  ||
|EXTCLK2  | EXTCLK2 | IN         | AD13   | AE14 (Lock: AB9)  |External clock input 2  ||
|GPIO1_16  | P4_19 | IN / OUT         |    | AB23  |  ||
|GPIO1_17  | P4_18 | IN / OUT         |    | V20  |  ||
|GPIO1_18  | P4_17 | IN / OUT         |    | U20  |  ||
|GPIO1_19  | P4_16 | IN / OUT         |    | U21  |  ||
|GPIO1_20  | P4_15 | IN / OUT         |    | V23  |  ||
|GPIO1_21  | P4_14 | IN / OUT         |    | U22  |  ||
|GPIO1_22  | P4_13 | IN / OUT         |    | V24  |  ||
|GPIO1_23  | P4_12 | IN / OUT         |    | T21  |  ||
|GPIO1_24  | P4_11 | IN / OUT         |    | U23  |  ||
|GPIO1_25  | P4_10 | IN / OUT         |    | T22  |  ||
|GPIO1_26  | P4_09 | IN / OUT         |    | U24  |  ||
|GPIO1_27  | P4_08 | IN / OUT         |    | R21  |  ||
|GPIO1_28  | P4_07 | IN / OUT         |    | T23  |  ||
|GPIO1_29  | P4_06 | IN / OUT         |    | R22  |  ||
|GPIO1_30  | P4_05 | IN / OUT         |    |   |  ||
|GPIO1_31  | P4_04 | IN / OUT         |    |   |  ||


** On GECKO4main the clocks are only in sync if the corresponding lock flag is set! **