參數(shù)資料
型號: 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
文件頁數(shù): 37/116頁
文件大?。?/td> 1442K
代理商: SPD6729QCE
PCI-to-PC Card (PCMCIA) Controller — PD6729
Datasheet
27
3.1.4
Interrupts
In a PC-compatible system with a PCI bus, there usually are two types of interrupts in use:
Four PCI-defined, active-low, open-drain, shared interrupt lines INTA# through INTD#
A number of ISA-architecture-defined, active-high, totem-pole IRQ output interrupts
The PD6729 provides ten interrupt pins that are individually programmable to work as either PCI-
type ‘INT#’ open-drain interrupts or ISA-type ‘IRQ’ totem-pole output interrupts. Bits 3 and 4 of
the Extension Control 1 register select PCI-bus or ISA-architecture-compatible interrupt
programming.
The PD6729 interrupt pins are labeled with names suggesting their mapping in a PCI-bus-based,
ISA-architecture-compatible system, though there are no hard requirements specifying the exact
mapping. Typically, all ten interrupt pins should be connected to system interrupt signals to allow
maximum flexibility in programming interrupt routing from the PD6729.
Figure 6. A Typical ZV Port Implementation
DRAM
GD7XXX
ANALOG ENCODER
PD6729
VIDEO DECODER
PCM CONVERTER
PC CARD
INTERFACE
PC CARD
MOTHERBOARD
AUDIO
VIDEO
NTSC/PAL RF SIGNAL
AUDIO
VIDEO & CONTROL
4
19
PC
CAR
D
SL
O
T
TV
LCD
CRT
AMP
AUDIO
CODEC
SPEAKERS
4
PCM
AUDIO
INPUT
19
ZV PORT
(Video)
H
O
ST
BUS
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