Analog Devices ADSP-21160 EZ-KIT Lite, Руководство пользователя

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System Architecture
2-4 ADSP-21160 EZ-KIT Lite Evaluation System Manual
SPORT0 Audio Interface
SPORT0
connects to the AD1881A SoundMAX codec (
U13
). Two 3.5 mm
stereo jacks (
J4
and
J5
) allow audio to be input and output. You can sup-
ply an audio input to the codec microphone input channel (
MIC1
) or to the
stereo input channel (
LINE_IN
). The jumper settings of
JP1
determine the
codec channel driven by the input jack (
J4
). For information about con-
figuring
JP1
, see “Audio Input Selection Jumper (JP1)” on page 2-6 .
SPORT0
is also routed to an off-board connector (
P11
). When using the
off-board connector, the codec must be held in reset not to drive any of
the
SPORT0
signals. The codec can be held in reset by driving
FLAG3
low
(
0
). The processor must drive
FLAG3
high (
1
) to start the codec.
L
The
TCLK0
and
RCLK0
pins are shorted together using
R19
and
R20
.
Expansion Interface
The expansion interface consists of three unpopulated connectors.
Table 2-1 shows the interfaces each connector provides. For the exact
pinout of these connectors, refer to “ADSP-21160 EZ-KIT Lite Sche-
matic” on page B-1 . Analog Devices does not populate these connectors or
provide any additional support for the interface. The mechanical dimen-
sions of the connectors can be found in
“Board Current Measurements”
on page 2-16 .
Table 2-1. Expansion Interface Connectors
Connector Interfaces
P1
5V,
GND
,
ADDRESS31–0
,
DATA47–0
P2
3.3V,
GND
,
FLAG3–0
,
SPORT1
,
~IRQ2–0
,
TIMEXP
P3 GND
,
RESET
,
LINKPORT2
, memory control signals,
D63–8
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