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A.1. Compact Flash interface

The PB11MPCore provides a Compact Flash connector on the front panel that enables you to connect a CompactFlash Storage Card to the Compact Flash interface. See Figure 3.2 for the connector location.

Figure A.1 shows the connector pin numbering.

Figure A.1. Compact Flash connector pin numbering

Figure A.1. Compact Flash connector pin numbering

The Compact Flash connector pinout specification supports three basic CompactFlash Storage Card modes:

  • PC Card ATA using Memory Mode

  • PC Card ATA using I/O Mode

  • True IDE Mode

Some pin functions change dependant on the mode, and some also change dependant on the interface protocol used. For example, when PC Card I/O Mode is used, pin 34 has the following three protocol dependant functions:

~IORD

When Ultra DMA Protocol is not active: This is an I/O Read strobe generated by the host.

~HDMARDY

When Ultra DMA Protocol DMA Read is active: This signal indicates that the host is ready to receive Ultra DMA data-in bursts.

HSTROBE

When Ultra DMA Protocol DMA Write is active: This signal is the data out strobe generated by the host.

Note

The PB-A8 CompactFlash interface provides limited support:

  • True IDE Mode (16-bit)

  • PC Card I/O Mode (data and task file register read and write access only).

PC Card Memory Mode is not supported.

Table A.1 lists the CompactFlash connector pinout for each supported mode. Refer to the CF+ & CF Specification Rev 4.1 for signal descriptions.

Table A.1. Compact Flash connector pinout
PC Card Memory ModePC Card I/O ModeTrue IDE Mode
PinSignalTypePinSignalTypePinSignalType
1GND 1GND 1GND 
2D03I/O2D03I/O2D03I/O
3D04I/O3D04I/O3D04I/O
4D05I/O4D05I/O4D05I/O
5D06I/O5D06I/O5D06I/O
6D07I/O6D07I/O6D07I/O
7~CE1I7~CE1I7~CE0I
8A10I8A10I8A10I
9~OEI9~OEI9~ATA_SELI
10A09I10A09I10A09I
11A08I11A08I11A08I
12A07I12A07I12A07I
13VCC 13VCC 13VCC 
14A06I14A06I14A06I
15A05I15A05I15A05I
16A04I16A04I16A04I
17A03I17A03I17A03I
18A02I18A02I18A02I
19A01I19A01I19A01I
20A00I20A00I20A00I
21D00I/O21D00I/O21D00I/O
22D01I/O22D01I/O22D01I/O
23D02I/O23D02I/O23D02I/O
24WPO24~IOIS16O24~IOCS16O
25~CD2O25~CD2O25~CD2O
26~CD1O26~CD1O26~CD1O
27D11I/O27D11I/O27D11I/O
28D12I/O28D12I/O28D12I/O
29D13I/O29D13I/O29D13I/O
30D14I/O30D14I/O30D14I/O
31D15I/O31D15I/O31D15I/O
32~CE2I32~CE2I32~CS1I
33~VS1O33~VS1O33~VS1O
34~IORD HSTROBE ~HDMARDYI34~IORD HSTROBE ~HDMARDYI34~IORD HSTROBE ~HDMARDYI
35~IOWR STOPI35~IOWR STOPI35~IOWR STOPI
36~WEI36~WEI36~WEI
37READYO37~IREQO37INTRQO
38VCC 38VCC 38VCC 
39~CSELI39~CSELI39~CSELI
40~VS2O40~VS2O40~VS2O
41RESETI41RESETI41RESETI
42~WAIT ~DDMARDY DSTROBEO42~WAIT ~DDMARDY DSTROBEO42IORDY ~DDMARDY DSTROBEO
43~INPACK ~DMARQO43~INPACK ~DMARQO43DMARQO
44~REG ~DMACK I44~REG DMACKI44~DMACKI
45BVD2O45~SPKRO45~DSAPI/O
46BVD1O46~STSCHGO46~PDIAGI/O
47D08I/O47D08I/O47D08I/O
48D09I/O48D09I/O48D09I/O
49D10I/O49D10I/O49D10I/O
50GND 50GND 50GND 

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