xccace-tq144 Xilinx Corp., xccace-tq144 Datasheet - Page 24

• Manufacturer Part Number: xccace-tq144
• Description: Ic Ace Controller Chip Tq144
• Manufacturer: Xilinx Corp.

System ACE CompactFlash Solution
Table 11: STATUSREG Register Bit Descriptions (Continued)
ERRORREG Register (BYTE address 08h-0Bh, WORD address 04h-05h)
The ERRORREG register identifies specific information on any error conditions that might exist in the System ACE CF
controller.
Table 12: ERRORREG Register Bit Descriptions
24
Bit
Bit
20
21
22
23
24
25
26
27
28
29
30
31
2
0
1
CFDSC
CFDRQ
CFCORR
CFERR
--
--
--
--
--
--
--
--
CARDRESETERR
CARDRDYERR
CARDREADERR
Table 12
Name
Name
provides a description of the ERRORREG register bits.
CompactFlash ready bit (reflects the state of the DSC bit in the status register of the
CompactFlash device):
• 0 means that the CompactFlash device is NOT ready
• 1 means that the CompactFlash device is ready
CompactFlash data request bit (reflects the state of the DRQ bit in the status register of
the CompactFlash device):
• 0 means that no data is ready to be transferred to/from the data buffer of the
• 1 means that information be transferred to/from the data buffer of the CompactFlash
CompactFlash correctable error bit (reflects the state of the CORR bit in the status register
of the CompactFlash device):
• 0 means that a correctable data error was NOT encountered
• 1 means that a correctable data error was encountered (check the ERRORREG
CompactFlash ERROR bit (reflects the state of the ERR bit in the status register of the
CompactFlash device):
• 0 means that no error has occurred during the execution of the previous command
• 1 means that the previous command has ended in some type of error (check the
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
CompactFlash card reset error:
• 0 means no error
• 1 means that the CompactFlash card has failed to reset properly before a time-out
CompactFlash card ready error:
• 0 means no error
• 1 means that the CompactFlash card has failed to become properly ready for
CompactFlash card read error:
• 0 means no error
• 1 means that a CompactFlash data read command (either ReadMemCardData or
CompactFlash device
device
register for more information)
ERRORREG register for more information)
condition occurred
commands before a time-out condition occurred
IdentifyMemCard) has failed
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Description
Description
DS080 (v2.0) October 1, 2008
Product Specification
R