Analog Devices Blackfin Audio EZ-Extender, Руководство пользователя

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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