Integrators applications may connect all of the GR64 signals pins, or just those necessary for minimal operation, or most commonly some other permutation. If GR64 signal pins are not connected to the host application you should terminate them in the following manner.
Table
| Pin |
| Name |
| Unused pin termination |
|
|
|
|
|
|
| 1, 3, 5, 7, 9 |
| VCC |
| Must be connected |
| 2, 4, 6, 8, 10, 12 |
| GND |
| Must be connected |
| 11 |
| CHG_IN |
| Leave Open |
| 13 |
| ADIN4/GPIO5 |
| Ground |
| 14 |
| ON/OFF |
| Must be connected |
| 15 |
| SIMVCC |
| Leave Open |
| 16 |
| SIMDET |
| Leave Open |
| 17 |
| SIMRST |
| Leave Open |
| 18 |
| SIMDAT |
| Leave Open |
| 19 |
| SIMCLK |
| Leave Open |
| 20 |
| DAC |
| Leave Open |
| 21 |
| GPIO1 |
| Connect to VREF |
| 22 |
| GPIO2 |
| Connect to VREF |
| 23 |
| GPIO3 |
| Connect to VREF |
| 24 |
| GPIO4 |
| Connect to VREF |
| 25 |
| VRTC |
| Leave Open |
| 26 |
| ADIN1 |
| Ground |
| 27 |
| ADIN2 |
| Ground |
| 28 |
| ADIN3 |
| Ground |
| 29 |
| SDA |
| Leave Open |
| 30 |
| SCL |
| Leave Open |
| 31 |
| BUZZER |
| Leave Open |
| 32 |
| DSR1/GPIO7 |
| Connect to VREF |
| 33 |
| LED/GPIO6 |
| Connect to VREF |
| 34 |
| VREF |
| Must be connected |
| 35 |
| TX_ON |
| Leave Open |
| 36 |
| RI/GPIO8 |
| Connect to VREF |
| 37 |
| DTR1/GPIO10 |
| Connect to VREF |
| 38 |
| DCD1/GPIO11 |
| Connect to VREF |
| 39 |
| RTS1/GPIO9 |
| Connect to VREF |
| 40 |
| CTS1/GPIO12 |
| Connect to VREF |
| 41 |
| DTM1 |
| Connect to VREF |
42 |
| DFM1 |
| Leave Open | |
|
|
|
|
|
|
LZT 123 1834 |
|
| 32 | ||