PCI Bus Host Bridge
9-2
Élan™SC520 Microcontroller User’s Manual
Figure 9-1
PCI Interface Block Diagram
9.3
SYSTEM DESIGN
Figure 9-2 shows how the ÉlanSC520 microcontroller can be connected to an external PCI
bus
target device.
Figure 9-3 on page 9-4 shows how the ÉlanSC520 microcontroller can be connected to an
external PCI bus
master device.
In each configuration, the PCI bus clock is driven from the ÉlanSC520 microcontroller on
the CLKPCIOUT pin and may require external buffering due to system loading (see “PCI
Clocking” on page 9-5). RST, the PCI bus reset signal, is driven from the ÉlanSC520
microcontroller.
The optional PCI bus target device interrupts can be connected to the PCI bus interrupt
pins on the ÉlanSC520 microcontroller (INTA, INTB, INTC, INTD) or any of the GPIRQ10–
PCI Host Bridge Controller
FIFO
PCI Bus
IRDY
AD
3
1
–A
D
0
FRAM
E
CBE3
–CBE0
PA
R
TRDY
ST
OP
D
E
V
SEL
PERR
SERR
GN
T
4
–G
N
T
0
RE
Q
4
–REQ0
PCI
Arbiter
C
L
KPCIOUT
RS
T
INT
A
–I
N
T
D
C
L
KPCIIN
Write
FIFO
Write
FIFO
Read
CPU
SDRAM
Controller
Interrupt
Steering
CPU Bus
Élan™SC520 Microcontroller
PCI Master Controller
PCI Target Controller
Содержание Elan SC520
Страница 1: ...lan SC520 Microcontroller User s Manual Order 22004A...
Страница 4: ...iv lan SC520 Microcontroller User s Manual...
Страница 28: ...Introduction xxviii lan SC520 Microcontroller User s Manual...
Страница 42: ...Architectural Overview 1 14 lan SC520 Microcontroller User s Manual...
Страница 78: ...System Initialization 3 22 lan SC520 Microcontroller User s Manual...
Страница 108: ...Clock Generation and Control 5 10 lan SC520 Microcontroller User s Manual...
Страница 118: ...Reset Generation 6 10 lan SC520 Microcontroller User s Manual...
Страница 148: ...System Arbitration 8 24 lan SC520 Microcontroller User s Manual...
Страница 214: ...SDRAM Controller 10 36 lan SC520 Microcontroller User s Manual...
Страница 230: ...Write Buffer and Read Buffer 11 16 lan SC520 Microcontroller User s Manual...
Страница 288: ...GP Bus DMA Controller 14 22 lan SC520 Microcontroller User s Manual...
Страница 316: ...Programmable Interval Timer 16 8 lan SC520 Microcontroller User s Manual...
Страница 328: ...Software Timer 18 4 lan SC520 Microcontroller User s Manual...
Страница 346: ...Real Time Clock 20 12 lan SC520 Microcontroller User s Manual...
Страница 360: ...UART Serial Ports 21 14 lan SC520 Microcontroller User s Manual...
Страница 414: ...AMDebug Technology 26 8 lan SC520 Microcontroller User s Manual...