參數(shù)資料
型號(hào): SPD6729QCE
廠商: INTEL CORP
元件分類: 總線控制器
英文描述: PCMCIA BUS CONTROLLER, PQFP208
封裝: MQFP-208
文件頁(yè)數(shù): 36/116頁(yè)
文件大?。?/td> 1442K
代理商: SPD6729QCE
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PD6729 — PCI-to-PC Card (PCMCIA) Controller
26
Datasheet
3.1.3
Zoomed Video Port
The PD6729 supports the implementation of the ZV (Zoomed Video) Port at the PC Card interface.
The ZV Port provides a direct connection between a PC Card and VGA controller and an audio
DAC. It allows the PC Card to directly write video data to an input port of a graphics controller and
audio data to a digital-to-analog converter.
The PD6729 supports the ZV Port in the “bypass” mode during which the signals are directly
routed from the PC Card bus to the video port of the VGA controller. Rerouting is accomplished by
tristating address lines A[25:4] from the PD6729. The PD6729 enters the ZV Port mode when the
Multimedia Enable bit (bit 0 of the Misc. Control 1 register at index 16h) and the Multimedia Arm
bit (bit 7 of the Misc. Control 3 register at extended index 25h) are set to a ‘1’.
Figure 6 shows an example of the ZV Port implementation using the PD6729. For more details,
refer to the application note Zoomed Video (ZV) Port Implementation (AN-PD10).
Figure 5. I/O Window Organization
PCI I/O Address Space
PCMCIA I/O Address Space
System I/O Map
End Address Registers
Start Address Registers
I/O Window
Card I/O Window
First 64 Kbytes
64 Mbytes
4 Gbytes
Card I/O Map
Offset Address Registers
.
System Memory Map
Upper Address Register
(selects 16-Mbyte page)
First 64 Kbytes
supported by
PD6729
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