URI

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The following page contains information about various URIs

URI / URI X

The URI / URI X is manufactured and sold by DMK Engineering.

Pinout

URI / URI X
PIN # Description Notes (as applicable)
1 PTT
2 GPIO1
3 GPIO2
4 GPIO4
5 GPIO5
6 GPIO6
7 CTCSS_DET
8 COR_DET
9 MIC_IN_DC
10 GPIO7
11 GPIO8
12 6dB_AOUT
13 GND
14 5VDC_OUT
15 EEPROM_CS
16 EEPROM_CK
17 EEPROM_DI
18 EEPROM_DO
19 GND
20 GND
21 MIC_IN_AC
22 LEFT_OUT
23 RIGHT_OUT
24 6dB_AIN
25 6dB_VDD

Schematics

Test Loopback Connector

The following information is used to create a URI Test (Loopback) connector.

Parts

  • 25 pin male D-shell connector
  • ATMEL AT93C46E-PU (Digikey Part Number AT93C46E-PU-ND) or equivalent for the EEPROM.
Connections for URI Test Loopback Connector
Connection Notes (as applicable)
Pin 1 -> Pin 7
Pin 2 -> Pin 3
Pin 4 -> Pin 8
Pin 14 -> EEPROM Pin 8
Pin 15 -> EEPROM Pin 1
Pin 16 -> EEPROM Pin 2
Pin 17 -> EEPROM Pin 3
Pin 18 -> EEPROM Pin 4
Pin 19 -> EEPROM Pin 5
  • Add the following resistors:
Connection Notes (as applicable)
10K Resistor between Pins 21 & 22
10K Resistor between Pins 21 & 23
  • For URIx P/N 9095 that uses the CM119A also include the following:
Connection Notes (as applicable)
Pin 5 -> Pin 10 Do *NOT* include for the older URI P/N 9080 that uses the CM108
Pin 6 -> Pin 11 Do *NOT* include for the older URI P/N 9080 that uses the CM108

Assembly

  1. Pins 1 thru 4 of the the 8 pin DIP EEPROM are soldered directly to pins 15 thru 18 (1 to 15, 2 to 16, 3 to 17, 4 to 18) of the 25 pin D-shell connector.
  2. Pin 14 is wired to pin 8 (Vcc) and pin 19 is wired to pin 5 (Gnd) of the EEPROM.
  3. Pins 6 and 7 of the EEPROM are not used and may be removed.