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===== Pins =====

^  MDR  ^  Con    ^ Pin   ^  Chip  ^  Chip        ^  Pin  ^  Funktion  ^  Comment                       ^  Notiz     ^
|  1    |  Data   |  25   |  U30   |  DS90LV019   |  9    |  RI-       |  SERTC-                        |            |
|  2    |  Data   |  26   |  U30   |  DS90LV019   |  10   |  RI+       |  SERTC+                        |            |
|  3    |  Data   |  22   |  U32   |  DS90CR285   |  37   |  TX3+      |  DATA3+                        |            |
|  4    |  Data   |  21   |  U32   |  DS90CR285   |  38   |  TX3-      |  DATA3+                        |            |
|  5    |  Data   |  14   |  U32   |  DS90CR285   |  39   |  TXCLK+    |  CLOCK+                        |            |
|  6    |  Data   |  13   |  U32   |  DS90CR285   |  40   |  TXCLK-    |  CLOCK-                        |            |
|  7    |  Data   |  20   |  U32   |  DS90CR285   |  41   |  TX2+      |  DATA2+                        |            |
|  8    |  Data   |  19   |  U32   |  DS90CR285   |  42   |  TX2-      |  DATA2-                        |            |
|  9    |  Data   |  18   |  U32   |  DS90CR285   |  45   |  TX1+      |  DATA1+                        |            |
|  10   |  Data   |  17   |  U32   |  DS90CR285   |  46   |  TX1-      |  DATA1-                        |            |
|  11   |  Data   |  16   |  U32   |  DS90CR285   |  47   |  TX0+      |  DATA0+                        |            |
|  12   |  Data   |  15   |  U32   |  DS90CR285   |  48   |  TX0-      |  DATA0-                        |            |
|  13   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  14   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  15   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  16   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  17   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  18   |  Power  |  VCC  |        |              |       |  12V       |                                |            |
|  19   |  NC     |  NC   |        |  NC          |  NC   |  NC        |                                |            |
|  20   |  NC     |  NC   |        |  NC          |  NC   |  NC        |                                |            |
|  21   |  NC     |  NC   |        |  NC          |  NC   |  NC        |                                |            |
|  22   |  NC     |  NC   |        |  NC          |  NC   |  NC        |                                |            |
|  23   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  24   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  25   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  26   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  27   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  28   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  29   |  Data   |  9    |  U55   |  HC245       |  7    |  A6        |  B6 -> U25 (P35 / P0.2) (PU)   |            |
|  30   |  Data   |  6    |  U25   |  AT89C51ED2  |  24   | P2.6       |                                |  Trigger?  |
|  31   |  Data   |  7    |  U55   |  HC245       |  6    |  A5        |  B5 -> U25 (P34 / P0.3) (PU)   |            |
|  32   |  Data   |  8    |  U55   |  HC245       |  11   |  B8 (PU)   |  A8 -> U25 (P9 / P3.3 / INT1)  |  Trigger?  |
|  33   |  Power  |  GND  |        |              |       |  0V        |                                |            |
|  34   |  Data   |  10   |  U55   |  HC245       |  12   |  B7 (PU)   |  A7 -> U25 (P37 / P0.0) (PU)   |  Trigger?  |
|  35   |  Data   |  24   |  U30   |  DS90LV019   |  12   |  DO+       |  SERTFG+                       |            |
|  36   |  Data   |  23   |  U30   |  DS90LV019   |  11   |  DO-       |  SERTFG-                       |            |

===== U3/U11 / NCV5500 (P5501LG) =====

1.5V Voltage Regulator

Pin 1 = Vin (5V from DCDC3)
Pin 3 = Vout (1.5V)

1.5V -> U31(P27) VCCA_PLL1
===== U19 / EPCS4N =====

FPGA_DN P1  -> GND

FPGA_DN P2  -> U19(P5) Flash ASDI

FPGA_DN P3  -> U19(P1) Flash nCS

FPGA_DN P4  -> U19(P2) Flash DATA

FPGA_DN P5  -> U31(P33) FPGA nCE

FPGA_DN P6  -> U31(P26) FPGA nConfig

FPGA_DN P7  -> U19(P3/7/8) Flash VCC (3.3V, generated by IC12 (NCP1733), from DCDC3)

FPGA_DN P8  -> U31(P145) FPGA CONF_DONE

FPGA_DN P9  -> GND

FPGA_DN P10 -> U19(P6) Flash DCLK

FPGA_DN P11 -> NC

FPGA_DN P12 -> GND

FPGA_DN P13 -> U29(8) R2IN (RX Input)

FPGA_DN P14 -> U29(7) T2OUT (TX Output)

===== U25 / AT89C51 =====
{{:fdxd_at89c51.png|}}

VCC = 5V (from DCDC3)

RST =

!PSEN => Jumper PSEN Middle

P3.0/RXD <- Jumper RXSW Middle <- U30(P4) Rout

P3.1/TXD <- U30(P2) Din

==== Programming ====
First, Install Atmel’s FLIP software on your PC and open the software.
  * Select the appropriate device in the device selection menu.  (For AT89LP51xx2 series devices, please select the corresponding device from AT89C51xx2 series. For example, In order to program AT89LP51RD2, you have to choose AT89C51RD2. Because both of them have same UART based boot loader)
  * On your board, press RESET switch (I hope you have a RESET switch on your board) and PSEN switch together.
  * Now release the RESET switch first and then release the PSEN switch.
  * Now in the FLIP software, select the communication medium as 'RS232' and select the appropriate port and baud rate.
  * Now you should be able to program the ‘hex file (.hex)’ into the device through FLIP software.
===== U32 / DS90CR285 =====

===== U55 / HC245 =====

VCC = 5V (from DCDC3)

DIR = 0 -> A->B

!OE = 0 -> Enabled

AT89C51 U25(P36) -> B1 -> A1 -> R17 -> Q7

Altera  U31(P83) -> B2 -> A2 -> U14(P6)

AT89C51 U25(P32) -> B3 -> A3 -> R51 -> Q4

AT89C51 U25(P33) -> B4 -> A4 -> CON-HVSW(P1)

===== U77 / DS1622 =====

Digital Thermometer with 3-Wire Interface

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