URI
URI Interface
The URI / URI X is manufactured and sold by DMK Engineering.
Pinout
| 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
Loopback
URI Test (Loopback) connector
25 pin male D-shell connector
Pin 1 to Pin 7
Pin 2 to Pin 3
Pin 4 to Pin 8
Pin 11 to Pin 24
Pin 14 to EEProm Pin 8
Pin 15 to EEProm Pin 1
Pin 16 to EEProm Pin 2
Pin 17 to EEProm Pin 3
Pin 18 to EEProm Pin 4
Pin 19 to EEprom Pin 5
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:
Pin 5 to Pin 10
Pin 6 to Pin 11
Do *NOT* include these connections for the older URI P/N 9080 that uses the CM108.
Remove EEprom pins 6 and 7 (not used).
Use an ATMEL AT93C46E-PU (Digikey Part Number AT93C46E-PU-ND)
or equiv. for the EEProm.
To accomplish this, 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. Pin 14 is wired to pin 8 (Vcc) and pin 19 is
wired to pin 5 (Gnd) of the EEProm. Pins 6 and 7 of the EEProm are not
used and may be removed.