Analog Devices ADSP-2181, Руководство пользователя

Страница: 52 / 70

Connectors
3-10 ADSP-2181 EZ-KIT Lite Evaluation System Manual
The
Microphone
/
Line_in Input
jack connects to the
LINE_IN_L
(left) and
LINE_IN_R
(right) pins or the
MIC1
and
MIC2
of the AD1847 SoundPort
Stereo codec, depending on the setting of jumpers
JP2
.
The
LINE Output
jack connects to the left (
L
)
LINE_OUT
and right (
R
)
LINE_OUT
pins of the codec.
EPROM Jumper Settings
The
JP1
jumper allows the ADSP-2181 EZ-KIT Lite board to be config-
ured for any one of six different EPROM sizes. By default, it can
accommodate either a 21C512 or 27C010. If some other size EPROM is
installed in the socket at
U2
, it is necessary to change the connections at
JP1
, as shown in Figure 3-5 .
Connections are made vertically between pads. The pair of pads below
each number constitutes the jumper position associated with that number.
Connections can be made in several ways. If an eight-pin header is
installed, and the etch connections on the back are cut, EPROM size
changes can be accommodated easily by installing and removing shunts. If
frequent size changes are not contemplated, it may be sufficient to solder
wires between the pads and so make the connections permanent.
Connections for 27C256 EPROM should look like in Figure 3-6 .
"
This involves cutting the etch on the back of the board at jumper
position 2 and adding a connection at jumper position 1.
Figure 3-5. JP1 Jumper settings