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參數資料
| 型號： | PCI930PBK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 多路復用及模擬開關 |
| 英文描述： | 3-CHANNEL, AUDIO/VIDEO SWITCH, PQFP128 |
| 封裝： | PLASTIC, TQFP-128 |
| 文件頁數： | 1/13頁 |
| 文件大小： | 191K |
| 代理商： | PCI930PBK |
PCI930
3-TO-1 ZOOMED VIDEO SWITCH
SCPS018B – OCTOBER 1997 – REVISED DECEMBER 1997
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Zoomed Video Switch – Supports up to
3 ZV Sources
D Designed for Use With the TI
PCI1220/1221 Leadership PC Card
Controllers
D First two (2) ZV Inputs are Controlled by
PCI1220/1221 Control Signal Outputs
D 100% Compliant With the PCMCIA Zoomed
Video Standard
D Status Bit Indicates ZV Activity – Can be
Used to Switch a Fourth External ZV
Source
D Switching can be Software Programmed
Using Registers in the PCI1220/1221
D Low Power 3.3-Volt Core Logic
D Small Form Factor 128-Pin TQFP Package
description
The 3-to-1 ZV switch is a companion chip to the PCI1220/1221 PC Card controllers; however, it can be used
in other applications where multiple ZV sources require external buffering. The ZV switch is a 3:1 multiplexer
for the 23 pins defined in the PCMCIA zoomed video interface. The ZV interface includes both the video and
audio data as defined by the
Zoomed Video Specification.
The three ZV source interfaces are referred to as A, B, and C. ZV sources A and B are intended for use with
the PCI1220/1221 PC Card zoom video outputs. The third source, C, may be from a variety of external ZV
sources.
An advanced CMOS process is used to achieve low system-power consumption.
PCI1220
PC Card
Controller
PCI Bus
PC Card
Socket A
PC Card
Socket B
23
PCI930
3-to-1 ZV
Switch
23
Third ZV
Source
2 Control Pins
ZV Output to VGA Controller
and Audio CODEC
NOTES:
1. The PC Card interface is 68 pins for CardBus and 16-bit PC Cards. In zoomed-video mode 23 pins are used for routing the
zoomed video signals too the VGA controller.
2. Control pin for third ZV source (Can Use GPO From PCI1220).
Control Pin
(See Note 2)
68
(See Note 1)
Figure 1. System-Level Diagram for PCI930 with the PCI1220 PC Card Controller
PC Card is a trademark of Personal Computer Memory Card International Association (PCMCIA).
TI is a trademark of Texas Instruments Incorporated.
Copyright
1997, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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