Audio Lpbk (Loopback) Switch (Sw10); Eth Mode/Flash Cs Switch (Sw11) - Analog Devices ADSP-BF526 EZ-Board Manual

Audio LPBK (Loopback) Switch (SW10)

The switch places the EZ-Board in a loopback to test the board for
SW10
signal/circuit continuity and functionality.
the signal to the headphone's left and right outputs for audio
MICIN
loopback. Do not turn
"Power-On-Self Test" on page 1-37
positions 3 and 4 connects the line in to line out loopback. By
SW10
default, is set to
SW10

ETH Mode/Flash CS Switch (SW11)

The Ethernet mode flash CS switch (
for the LAN8700 RMII PHY chip (
utilize internal chip pull-ups. Setting a position 1–3 of
pull-down resistor.
switch settings.
position 4 disconnects the
SW11
Setting position 4
SW11
interface II. By default,
Table 2-8. ETH Mode Flash CS Switch (SW11 Positions 1–3)
MODE[2:0] Setting
OFF, OFF, OFF
, ,
OFF OFF ON
, ,
OFF ON OFF
, ,
OFF ON ON
, ,
ON OFF OFF
, ,
ON OFF ON
, ,
ON ON OFF
, ,
ON ON ON
ADSP-BF526 EZ-Board Evaluation System Manual
ADSP-BF526 EZ-Board Hardware Reference
positions 1 and 2
SW10
for more information.
, , , .
OFF OFF ON ON
SW11
U29
Table 2-8 shows the default as well as the alternate
SPISEL1
is useful when using
OFF
is set to
SW11 OFF
Mode Definitions
All capable, auto negotiation (default)
Power down mode
Repeater mode, auto negotiation
100Base-TX half duplex advertised, auto negotiation
100Base-TX full duplex
100Base-TX half duplex
10Base-T full duplex
10Base-T half duplex
positions 1 and 2 connect
SW10
at the same time. See
ON
) sets the bootstrapping option
). The mode settings for the PHY
SW11 ON
pin from the SPI flash chip (
on the expansion
SPISEL1
, , , .
OFF OFF ON
connects a
).
U6
2-13