Ampro Corporation 420 - Manual (Page 35)

Chapter 3 Hardware
CoreModule 420 Reference Manual 29
Compact Flash Socket Interface (J12)
The CoreModule 420 provides a compact flash socket, which allows for the insertion of a compact flash
card (Type I or II). The compact flash card acts as a standard IDE Drive and is the only device
connected to the Secondary IDE bus. If a compact flash card is installed, it must be set in BIOS Setup as
[CF on Sec Master] and is hardwired for master mode.
NOTE Supports True IDE Mode and Type I or Type II compact flash cards in the
compact flash socket (J12).
Table 3-10. Compact Flash Socket Interface Pin/Signal Descriptions (J12)
Pin # Signal Description
1 GND Ground
2 D3 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*.
8, 9 GND Ground
10, 11 GND Ground
12 GND Ground
13 Vcc +5 volts ±5% power supply
14, 15 GND Ground
16, 17 GND 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 remaining 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.
24 NC Not connected – (IOCS16*)
25 GND Ground
26 NC Not Connected (Card detect)