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BDM-610000049 Rev G Chapter 3: Connecting the cpuModule 35
ATA/IDE Disk Chip Socket (U16)
The ATA/IDE Disk Chip socket is a 32-pin socket that supports +3.3V or +5V miniature ATA/IDE flash disk chips.
The socket allows a true IDE device to be attached to the board with either a socketed or soldered connection.
Such true IDE devices are supported by all major operating systems, and do not require special drivers.
Installing and Configuring the ATA/IDE Disk Chip
To ensure proper installation and of the ATA/IDE Disk Chip, follow the following configuration steps. Note that
the first few steps must be performed before installing the Disk Chip.
1. Before installing the ATA/IDE Disk Chip in the Disk Chip Socket (U16), verify that cpuModule is
configured for the correct Disk Chip supply voltage. The hardware default configuration is +3.3V. To use
a +5 V Disk Chip with cpuModules, contact RTD Technical Support.
2. Next, apply power to the system, and press the delete key repeatedly to enter the BIOS setup screen.
Once in the BIOS, specify the following settings:
a. Enable the cpuModule’s secondary IDE channel.
b. Specify the IDE mode of the ATA/IDE Disk Chip. For more information on the supported IDE
modes, refer to Configuring the ATA/IDE Disk Chip Socket section of this manual on page 68.
WARNING The ATA/IDE Disk Chip socket does not support conventional SSD memory devices or
devices that install as a BIOS extension (such as the M-Systems DiskOnChip®). If such a device is installed,
the cpuModule and device will almost certainly be destroyed.
Table 16 ATA/IDE Disk Chip Socket (U16)
1
1. Signals marked with (#) are active low.
Pin Signal Pin Signal
1 RESET# 32 VDD
2
2. The hardware default configuration for VDD is +3.3 V, but this pin may also be configured as +5 V. For
more information, contact RTD Technical Support.
2D7 31D8
3D6 30D9
4D5 29D10
5D4 28D11
6D3 27D12
7D2 26D13
8D1 25D14
9D0 24D15
10 DMARQ/WP# 23 IOWR#
11 IORD# 22 DMACK/CSEL
12 INTRQ 21 IOCS16#
13 A1 20 PDIAG#
14 A0 19 A2
15 CS1FX# 18 CS3FX#
16 GND 17 DASP#