Ampro Corporation Littleboard 550 Manuel D’Utilisation
Chapter 3
Hardware
LittleBoard 550
Reference Manual
35
IDE Interface (J12, J17)
The LittleBoard 550 provides two IDE connectors for primary and secondary IDE signals.
The EIDE interface logic supports the following features:
•
Transfer rate up to 100Mbps
•
Increase reliability using Ultra DMA 33/66/100 transfer protocols
•
Full scatter-gather capability
•
Supports ATAPI and DVD compliant devices
•
PIO IDE transfers as fast as 14Mbps.
•
Bus master IDE transfers as fast as 100Mbps.
•
Single Bus Master EIDE
• Supports two IDE drives per interface channel (primary or secondary connector)
Table 3-9 gives the signals for the IDE 40-pin, 0.100” header.
Table 3-9 gives the signals for the IDE 40-pin, 0.100” header.
Table 3-9. Primary IDE Interface Pin/Signal Descriptions (J12)
Pin #
Signal
Description
1
IDERST*
IDE Reset – Low active hardware reset (RSTDRV inverted)
2
GND
Ground
3
PDD7
Primary Disk Data 7 – 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 to provide the disk data signals.
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 to provide the disk data signals.
4
PDD8
Primary Disk Data 8 – Refer to PDD7 on pin-2 for more information.
5
PDD6
Primary Disk Data 6 – Refer to PDD7on pin-2 for more information.
6
PDD9
Primary Disk Data 9 – Refer to PDD7on pin-2 for more information.
7
PDD5
Primary Disk Data 5 – Refer to PDD7on pin-2 for more information.
8
PDD10
Primary Disk Data 10 – Refer to PDD7 on pin-2 for more information.
9
PDD4
Primary Disk Data 4 – Refer to PDD7 on pin-2 for more information.
10
PDD11
Primary Disk Data 11 – Refer to PDD7 on pin-2 for more information.
11
PDD3
Primary Disk Data 3 – Refer to PDD7 on pin-2 for more information.
12
PDD12
Primary Disk Data 12 – Refer to PDD7 on pin-2 for more information.
13
PDD2
Primary Disk Data 2 – Refer to PDD7 on pin-2 for more information.
14
PDD13
Primary Disk Data 13 – Refer to PDD7 on pin-2 for more information.
15
PDD1
Primary Disk Data 1 – Refer to PDD7 on pin-2 for more information.
16
PDD14
Primary Disk Data 14 – Refer to PDD7 on pin-2 for more information.
17
PDD0
Primary Disk Data 0 – Refer to PDD7 on pin-2 for more information.
18
PDD15
Primary Disk Data 15 – Refer to PDD7 on pin-2 for more information.
19
GND
Ground
20
NC/Key
Not connected / Key pin plug