Intel ESM-2740 Manual Do Utilizador

 

ESM-2740/2743 User’s Manual

  19

 

The CH7011 is a Display controller device which accepts a digital graphics input signal, and 

encodes and transmits data to a TV output (analog composite, s-video or RGB). The device 

accepts data over one 12-bit wide variable voltage data port which supports five different 

data formats including RGB and YCrCb. 

The TV-Out processor will perform non-interlace to interlace conversion with scaling and 

flicker filters, and encode the data into any of the NTSC or PAL video standards. The 

scaling and flicker filter is adaptive and programmable to enable superior text display. Eight 

graphics resolutions are supported up to 1024 by 768 with full vertical and horizontal 

underscan capability in all modes. A high accuracy low jitter phase locked loop is integrated 

to create outstanding video quality. Support is provided for Macrovision™ and RGB bypass 

mode which enables driving a VGA CRT with the input data.

 

The ICH4 PCI interface provides a 33 MHz, Rev. 2.2 compliant implementation. All PCI 

signals are 5V tolerant, except PME#. The ICH2 integrates a PCI arbiter that supports up to 

six external PCI bus masters in addition to the internal ICH4 requests. 

The ICH4 contains an Enhanced Host Controller Interface (EHCI) compliant host controller 

that supports USB high-speed signaling.    High-speed USB 2.0 allows data transfers up to 

480Mb/s which is 40 times faster than full-speed USB. The ICH4 also contains three 

Universal Host Controller Interface (UHCI) controllers that support USB full-speed and 

low-speed signaling. 

The ICH4 supports 6 USB 2.0 ports.    All six USB ports are high-speed, full-speed, and 

low-speed capable. ICH4’s port-routing logic determines whether a USB port is controlled 

by one of the UHCI controllers or by the EHCI controller.