ML410 Embedded Development Platform
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77
UG085 (v1.7.2) December 11, 2008
Detailed Description
R
Table 2-40
shows the output combinations of the clock multiplexer.
Front Panel Interface (J23)
The front panel interface connector (J23) is a 24-pin header that accepts a standard IDC 24
pin connector (0.1 inch pitch). J23 provides an optional means to control and gather status
information from the ML410 if enclosed in a case similar to a desktop computer. The
functionality listed below can easily be connected with a custom user-provided cable that
connects to user logic designed to control and monitor the functionality available through
the front panel interface.
The front panel interface provides the following control capability:
♦
Power ON|OFF the board
-
ML410 platforms are delivered with a jumper installed on J23
♦
Eight System ACE configuration selections
-
Connects to the three System ACE configuration address lines
♦
System ACE Reset
-
Active-Low input (pulsed)
♦
CPU Reset
-
Active-Low input (pulsed)
The front panel interface provides access to the following status information:
♦
FPGA configuration DONE output
♦
IDE disk access output
♦
ATX power output
♦
Two FPGA user-defined output signals
♦
ATX speaker output
♦
Keyboard inhibit input (active-Low)
Note:
All front panel interface outputs, except for the speaker out, can drive LEDs.
Table 2-40:
Outputs of the Clock Multiplexer (U6)
CLK_SEL0 CLK_SEL1
Q0
Q1
0
0
250 MHz MGTCLK sourced
from X5
250 MHz SGMIICLK sourced
from X5
0
1
250 MHz MGTCLK sourced
from X5
SGMIICLK sourced from the
MGT SMA connectors at J20
and J21
1
0
MGTCLK sourced from the
MGT SMA connectors at J20
and J21
250 MHz SGMIICLK sourced
from X5
1
1
MGTCLK sourced from the
MGT SMA connectors at J20
and J21
SGMIICLK sourced from the
MGT SMA connectors at J20
and J21
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