User`s manual

HARDWARE PREPARATION AND INSTALLATION
MPC505EVBUM/D 2-11
2.2.10.1 Chip Select Dip Switch (DS1)
The MPC505 MCU uses several chip selects on-board to control EVB functionality (memory and
peripheral devices). You can redefine these chip selects to control external devices via the
expansion connectors. To avoid conflicts between on-board and external devices, disable the
appropriate chip select by setting the appropriate DS1 switch (see Table 2-6).
Table 2-6. Chip Select Dip Switch (DS1)
Pin Chip Select Device Connected to Chip Select
1 CSBOOT Flash chip select (U24, U25, U27, U28)
2 FOE Flash output enable (U24, U25, U27, U28)
3 CS1 Burst RAM Bank1 (U19, U29)
4 CS2 Burst RAM Bank2 (U20, U30)
5 CS3 Burst RAM Bank3 (U21, U31)
6 CS4 Burst RAM Bank4 (U22, U32)
7 CS5 SCSI DUART (U4)
8 — UNUSED