NOTE:
Since it is illegal to perform DMA on transmit and receive on the
same DMA channel, jumper blocks J7 and J8 should never have the
same pins connected. This could result in damage to the system.
5.6 SYNCA to RLEN Control - J7 J7 controls the signal path from the RLEN bit in the Communications Register to the
SYNCA input to the SCC. If J7 is installed and the SCC is in external SYNC mode, setting the
RLEN bit high will assert the SYNCA pin. Note: the RLEN output is still affected when used to
control the SYNCA pin.
Table 9 Jumper J7 Selections
no connections
RLEN (Default)
1-2SYNCA
Jumper J1Function
MPA-100 User's Manual 5-4