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ADSP-BF527 EZ-KIT Lite Evaluation System Manual
2-15
ADSP-BF527 EZ-KIT Lite Hardware Reference
ETH Mode Flash CS Switch (SW9)
The Ethernet mode flash CS switch (
SW9
) sets the bootstrapping options
for the LAN8700 RMII PHY chip (
U14
SW9
default
as well as the alternate switch settings.
SW9
position 4 disconnects
SPISEL1
from the SPI flash chip (
U8
). Setting
SW9
position 4
OFF
is useful when using
SPISEL1
on the expansion inter-
face at connector
J2
pin 11.
SW9
default setting is position 4
ON
.
UART Enable Switch (SW10)
The UART enable switch (
SW10
) disconnects the
UART1
signals from the
GPIO pins of the processor. When
SW10
is
OFF
, its associated GPIO signals
can be used for other functions on the board.
SW10
default is
OFF
,
ON
,
OFF
,
ON
. Flow control is not implemented in POST, so
SW10
positions 1 and 3
are
OFF
. Refer to the ADM3202 datasheet for more information about the
UART interface.
Table 2-10. ETH Mode Flash CS Switch (SW9)
MODE[2:0] Setting
Mode Definitions
111
All capable, auto negotiation (default)
110
Power down mode
101
Repeater mode, auto negotiation
100
100Base-TX half duplex advertised, auto negotiation
011
100Base-TX full duplex
010
100Base-TX half duplex
001
10Base-T full duplex
000
10Base-T half duplex
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