Phytec phyCORE-PXA270, Руководство по оборудованию

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Carrier Board phyCORE-PXA270
20
©
PHYTEC Meßtechnik GmbH 2006 L-668e_1
5.1 Interrupts
The interrupt signals for components on the phyCORE-PXA270 are
configured on the phyCORE module itself. Because of the limited
number of available GPIOs, the signals /MMC_DET and
MMC-WP cannot be connected to GPIO9 and GPIO10 on the
phyCORE module, hence these functions are not available. These
GPIO signals are instead used for the interrupt inputs /PLD_INT for
power management functions and AC_INT from the AC97 Codec
(
refer to Table 6 ). This is implemented on the Carrier Board.
GPIO Signal Jumper Description
GPIO_0 /RTC_INT J29 Low active interrupt RTC-8564
GPIO_52 LAN_IRQ J20 High active interrupt for LAN91C11 Ethernet
controller
GPIO_114 /CAN_INT J23 Low active interrupt for SJA1000 CAN controller
GPIO27
(SSP_EXT
CLK) EGPIO27 J9 Low active interrupt for MAX7301 matrix
keyboard
Table 5: Interrupt Assignment phyCORE-PXA270
On the Carrier Board interrupts are used for the CF card, IDE
interface, AC97, touch and power management circuits. These are
either hard-wired over solder jumpers or managed in the two address
decoders.
GPIO Signal Jumper
/ PLD Description
GPIO_1 /SW_ON J15 Low active interrupt for User Switch
GPIO_9 /PLD_INT Low active interrupt for power management
GPIO_10 AC_INT J18 High active interrupt for WML9712 AC97 controller
GPIO_13 xIDE_IRQ J1 High active interrupt for IDE drive
GPIO_12 /CF_CDINT
(internal)
U6 Low active interrupt /CD1 and /CD2 CF card. Support
of hot-plugging CF cards; an interrupt is released each
time a card is inserted ot removed, only available with
PCB revision 1220.2 and higher.
GPIO_11 CF_IRQ J2 High active interrupt CF card. The active level of an
interrupt depends on the card type (memory, TrueIDE,
etc.) With TrueIDE cards the level is active high.
Table 6: Interrupt Assignment Carrier Board