Chapter 3 Hardware
CoreModule 420 Reference Manual 29
CompactFlash Socket (J12)The board contains a Type II PC card connector, which allows for the insertion of a CompactFlash card.
The CompactFlash card acts as a standard IDE Drive and is connected as [CF on Sec Master] in BIOS.
NOTE Supports True IDE Mode and Type 1 or Type II PC cards in the
CompactFlash socket (J12).
Table 3-10. CompactFlash Interface Pin/Signal Descriptions (J12)
Pin # Signal Description
1GND Digital Ground
2D3 Disk Data 3 – These signals (D0-D15) carry the Data, Commands, and Status
between the host and the controller. D0 is the LSB of the even Byte of the Word.
D8 is the LSB of the Odd Byte of the Word. All Task File operations occur in
byte mode on the low order bus D0-D7, while all data transfers are 16 bit using
D0-D15 provide the disk data signals.
3 D4 Disk Data 4 – Refer to pin 2, D3, for more information.
4 D5 Disk Data 5 – Refer to pin 2, D3, for more information.
5 D6 Disk Data 6 – Refer to pin 2, D3, for more information.
6 D7 Disk Data 7 – Refer to pin 2, D3, for more information.
7 CE1* Card Enable 1 – This signal, along with CE2*, is used to select the card and
indicate to the card when a byte or word operation is being performed. This signal
accesses the even byte or odd byte of the word depending on A0 and CE2*.
8GND Digital Ground
9GND Digital Ground
10 GND Digital Ground
11 GND Digital Ground
12 GND Digital Ground
13 Vcc +5 volts ±5% power supply
14 GND Digital Ground
15 GND Digital Ground
16 GND Digital Ground
17 GND Digital Ground
18 A2 Address Select 2 – One of three signals (0 – 2) used to select one of eight
registers in the Task File. The host grounds all remai nin g address lines.
19 A1 Address Select 1 – Refer to A2 on pin-18 for more information.
20 A0 Address Select 0 – Refer to A2 on pin-18 for more information.
21 D0 Disk Data 0 – Refer to D3 on pin-2 for more information.
22 D1 Disk Data 1 – Refer to D3 on pin-2 for more information.
23 D2 Disk Data 2 – Refer to D3 on pin-2 for more information.