ADSP-21262 EZ-KIT Lite Evaluation System Manual
3-15
EZ-KIT Lite Hardware Reference
button enable switch (
SW9
) is capable of disconnecting the push buttons
from the corresponding DSP pin (refer to
“Push Button Enable Switch
(SW9)” on page 3-10
on page 3-10 for more information). The DSP sig-
nals and corresponding push buttons are summarized in
Table 3-7
.
Board Reset Push Button (SW5)
The
RESET
push button (
SW5
) resets all of the ICs on the board. The only
exception is the USB interface chip (
U34
). The chip is not being reset
when the push button is pressed after the USB cable has been plugged in
and communication correctly initialized with the PC. After USB commu-
nication has been initialized, the only way to reset the USB is by powering
down the board.
Connectors
This section describes the connector functionality and provides informa-
tion about mating connectors.
Figure 3-7
shows the connector locations.
Expansion Interface (J1, J2, J3)
Three board-to-board connectors (
J3–1
) provide signals for most of the
processor’s peripheral interfaces. The connectors are located at the bottom
of the board. For more information about the expansion interface, see
“Expansion Interface” on page 3-7
. For the
J3–1
connectors’ availability
and pricing, contact Samtec.
Table 3-7. Push Button Connections
DSP
Signal
Push Button Reference
Designator
DSP
Signal
Push Button Reference
Designator
FLAG1
SW1
DAI_P19
SW3
FLAG2
SW2
DAI_P20
SW4
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