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2.2.21
Custom Expansion Card Connector
This connector allows a custom expansion-board design to interface with the kit system bus as a
static or variable-latency (VLIO) device. The connector supports fly-by and alternate bus-
mastering DMA modes.
2.2.22
Ethernet* Controller
The Standard Microsystems LAN91C111 Ethernet* controller on the kit provides Ethernet
connectivity for the platform. The LAN91C111 supports full-duplex switched Ethernet at speeds of
10 or 100 Mbps and complies with 802.3 10BASE-T operation. The LAN91C111 is memory
mapped to nCS[4].
3-bit control lines (IOS) for configuring the EEPROM's data organization are controlled by the
following switches:
•
SW1 - IOS0
•
SW2 - IOS1
•
SW3 - IOS2
Note: DOT = 1 for all three switches
A single switch controls the EEPROM enable line:
•
SW4 - ENEEP (DOT = enabled)
The LED indicators are defined as follows:
•
DD1 - Link (software defined)
•
DD2 - Transmit/Receive (software defined)
•
DD3 - General purpose (software defined)
2.2.23
Fault-Emulation Switches
The nBATT_FLT and nVDD_FLT switches control the states of the Intel
nBATT_FAULT and nVDD_FAULT pins. These switches simulate the error conditions – that is,
they functionally work the same and are used to signal the Intel
supply fault or backup battery fault has occurred. The default for these switches is not asserted.
For details, see
2.2.24
General-Purpose Switches and LEDs
The main board has eight general-purpose discrete switches, two hex-encoding rotary switches,
eight discrete LEDs, and eight seven-segment hex display digits available for user applications.
These can be read or written through the FPGA platform-level registers. See the following for
instructions on using them:
•
Table 3, "Switches and Settings, Intel® PXA27x Processor Developer's Kit Main Board" on
page 32
•
Table 4, "LED Indicators, Intel® PXA27x Processor Developer's Kit Main Board" on page 33
®
Intel
PXA27x Processor Developer's Kit - User's Guide
Table
3.
®
PXA270 Processor
®
PXA270 Processor that a power
29
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