D1M2H Mango Adapter Board Manual
【
CONFIDENTIAL
】
11
4.3
Function specification
Main oscillator
Terminals: X1/X2 clock selection
o
Crystal (8MHz)
o
Ceralock (8MHz)
o
Direct clock input from external pulse generator
Table 4-1: Sub-Selection of external oscillator
Loc
Function
JP6
External oscillator sub-selection
1-2 select
Use BNC connector (CN14).
2-3 select
Use crystal oscillator Y1
Table 4-2: Selection of crystal or external oscillator
Loc
Function
JP8 /
JP9
External oscillator select
JP8/JP9 open
R12 soldered
Use on-board crystal
JP9 1-2 closed
R12 unsoldered
Use on-board crystal
JP8 JP9-1 closed
R12 unsoldered
Use external oscillator (JP6)
Sub oscillator
Terminals: XT1/XT2
o
Crystal (32.768KHz)