Datasheet

Blackfin EZ-Extender Manual 2-5
EZ-Extender Hardware Reference
Clock Routing Switch (SW2)
The source of the clock input signals PPI0_CLK and PPI1_CLK are config-
ured through the SW2 DIP switch settings, as illustrated in Figure 2-1 on
page 2-2. The SW2 settings are summarized in Table 2-4 and Table 2-5.
Table 2-2. SW1 FSYNC1 Direction Control Positions 3 and 4
SW1 Position 3 SW1 Position 4 Function
OFF OFF EZ-KIT Lite is transmitter
ON OFF PF0 sets the direction:
0 = EZ-KIT Lite is receiver
1 = EZ-KIT Lite is transmitter
OFF ON EZ-KIT Lite is receiver
ON ON Do not use
Table 2-3. SW1 FSYNC2 Direction Control Positions 5 and 6
SW1 Position 5 SW1 Position 6 Function
OFF OFF EZ-KIT Lite is transmitter
ON OFF PF0 sets the direction:
0 = EZ-KIT Lite is receiver
1 = EZ-KIT Lite is transmitter
OFF ON EZ-KIT Lite is receiver
ON ON Do not use
Table 2-4. PPI0_CLK Source Settings
SW2 Position 1
RX_CLK
SW2 Position 2
TX_CLK
PPI0_CLK Source
OFF OFF The PPI0_CLK signal is not generated by the
EZ-Extender
OFF ON TX_CLK; this signal must be generated by one of
the user-configured PPI clock sources