Interface Document; Top View - RoyalTek REB-4315 Operational Manual

9 Interface document

Pin defined:
Pin
Name
No.
1 NC
2 NC
3 PPS
4 TX
5 RX
6 GPIO-3
7 EI2/GPIO-8
8 GND
RoyalTek Confidential
REB-4315 Operational Manual

Top View

Input/
Description
Output
Non connect
Non connect
TM Time mark output.
Output
Output pulse timing.
Output UART data transmit.
Input UART data receive.
Reserved Reserved.
Reserved Reserved.
Ground
9
Characteristics
Vol Max：0.4v
Voh Min：1.35v
(CMOS I/O run from 1.8v)
Vol Max：0.4v
Voh Min：1.35v
(CMOS I/O run from 1.8v)
Vil ：-0.4v~0.45v
Vih ：1.26v~3.6v
(CMOS I/O run from 1.8v)