User`s manual

23
• False start bit detection
VGA Graphics
The graphics controller supports the MediaQ MQ-200 companion chip. The controller
provides up to 1280 x 768 (along with many other variations) along with LCD display support.
MQ-200 features:
• Support for 1,2,4,15 and 16 bits per pixel (bpp).
• Built-in 16Mb frame buffer for the MQ-200 video controller.
• Triple 256x8 color lookup table for 1,2,4 and 8 bpp.
• Supports 640x480(VGA) to 1024x768(XGA) with multiple refresh rates for CRT
• Supports XGA,SVGA,VGA for passive dual scan color LCD w/ 8,16, and 24 bit interfaces
• Supports XGA,SVGA,VGA for active matrix color LCD w/ 8,16, and 24 bit interfaces
• All options are software programmable
The Tahoe board contains a 15-pin DB15 female, PC-style video connector. This connector
pin-out is the same as that used on commercial PCs today (see Table 3 below) are:
Table 3: VGA Pin-out
Pin Name Pin Name
1 RED 9 NC
2 GREEN 10 GND
3 BLUE 11 NC
4 NC 12 NC
5 GND 13 HSYNC
6 GND 14 VSYNC
7 GND 15 NC
8 GND
PS/2 Keyboard
A PS/2 keyboard interface is provided by the HD64465 on the Tahoe board. It is implemented
as a Register Interface peripheral and all protocols and timing conform to IBM-PC PS/2
specifications.
The connector is a 6 pin MiniDIN with the following pin-outs:
Table 4: Keyboard PS/2 Connector Pin-out
Pin Name Pin Name
1 KBDAT 4 VCC
2 NC 5 KBCLK
3 GND 6 NC
Parallel Printer Port
A parallel printer port is provided from the HD66465 on the Tahoe board. The parallel port
uses a standard female DB25 form factor parallel port connector. The HD64465 companion
chip provides the parallel port. WinCE 2.11 and 2.12 only supports this port as a debug
Parallel Port- it is not available as a LPT-type port.
Also note that this is a host-configured port, similar to a PC parallel port. For a parallel port
download this port needs to be connected to a host PC port. To support this host-to-host