Phytec phyCORE-PXA255, Hardware Manual

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Memory Configuration
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PHYTEC Meßtechnik GmbH 2004 L-657e_0
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The settings for the PCMCIA interface are made in the PXA255
controller. The CF card registers of the PLD U7 along with their reset
values are given in the following table.
REG ADDR D7 D3 D2 D1 D0
CF0 0x3001000 Res Res PM_5V Res LED
Reset X 0
CF1 0x3001002 Res Res Res Res IDE/MEM
Reset 0
CF2 0x3001004 Res RDY RDYEN RESET RESEN
Reset 0 0 0 0
CF3 0x3001006 Res CFCD IDEIN IDEON IDEOE
Reset 0 0 0 0
CF4 0x3001008 Res CF5V CF3V 5V/3V CFPWR
Reset 0 0 0 0
CF5 0x300100A Res /VS2 /VS1 /BVD2 /BVD1
Reset X X X X
CF6 0x300100C Res WP Res /CD2 /CD1
Reset X X X
Table 26: CF Card Control Register with Reset Values
The operating states of the 5 V supply voltages can be read in the CF
control register 0. If the Development Board’s input voltage drops
below 8 V, the 5 V supply voltage will be shut off. The CF LED is
located at register bit 0. The LED is switched on by setting the bit and
can be used as an access display for the CF card socket.
REG ADDR D7 D3 D2 D1 D0
CF0 0x3001000 Res Res PM_5V Res LED
RW R RW
Table 27: CF Card Control Register 0
LED Controls the CF card access LED.
PM_5V This bit indicates that the 5 V supply voltage is
active.