Intel PXA27x Series, User Manual

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32 Intel
®
PXA27x Processor Developer’s Kit - User’s Guide
2.2.26 Switches
Note: Most of the switches on the main board and processor card are SPDT slide switches, with one of
the positions identified by a DOT. Switch positions are thus indicated as DOT
or NO DOT.
Table 3 describes the functions and settings of the switches on the main board. See Figure 6 for the
switch locations. Boldface print indicates factory default settings.
Caution: While power is on, do not change the settings of switches marked
†
in Table 3 .
J61
audio card power select, 3V.: J61(1) –
AUDIO_4P5V; J61(3) – VCCP_3V
J62
audio card power select, 3.15V: J62(1) – audio
3P15V; J62(3) – DC3P15V
† Refer to the kit schematic diagram and to the Intel
®
PXA27x
Processor Family Developer’s Manual for details of these
interfaces.
Table 2. Connectors, Intel
®
PXA27x Processor Developer’s Kit Main Board (Sheet 3 of 3)
Designator Name
Table 3. Switches and Settings, Intel
®
PXA27x Processor Developer’s Kit Main Board (Sheet
1 of 2)
Switch Name Function
SW1
SW2
SW3 LAN91C111 IOS0
LAN91C111 IOS1
LAN91C111 IOS2
Ethernet controller chip mode-control pins:
DOT = open (pin pulled high internally)
NO-DOT = pin low
SW4 LAN91C11 IOS3
Enable/disable the Ethernet EEPROM:
DOT = enabled
NO-DOT = disabled
SW5 SQA_IRDA_SEL
IrDA Routing Control:
DOT = PXA27x
NO-DOT = Reserved
SW6 SQA_AUX_UART_SEL
DB9 and Bluetooth Header Routing Control:
DOT = Reserved
NO-DOT = Reserved
SW6 Auxiliary UART Bluetooth Header
DOT BTUART Reserved
NO DOT Reserved BTUART
SW7
†
SWAP_FLASH
Flash-memory bank nCS<0/1> assignment:
DOT = nCS0 —> Intel
®
PXA270 Processor card bank (boot
source)
nCS1 —> main board bank
NO-DOT = nCS0 —> main board bank (boot source)
nCS1 —> Intel
®
PXA270 Processor bank
SW8
†
nBUS_32
Main Board Flash-memory bus width:
DOT = 32 bits
NO-DOT = 16 bits