參數(shù)資料
型號： PC87570
廠商： National Semiconductor Corporation
英文描述： PC87570 Keyboard and Power Management Controller
中文描述： PC87570鍵盤和電源管理控制器
文件頁數(shù)： 1/168頁
文件大?。?/td> 1146K
代理商： PC87570
1
- January 1998
H
www.national.com
1998 National Semiconductor Corporation
PRELIMINARY
April 1998
PC87570 Keyboard and Power Management Controller
Highlights
General Description
The PC87570 is a highly integrated embedded RISC-based
controller optimized for power management (PM), keyboard
and mouse (KBC) and system control in portable Personal
Computer (PC) applications.
The PC87570 incorporates National’s CompactRISC
CR16A core, a high performance 16-bit RISC processor
core, a Bus Interface Unit (BIU) that directly interfaces with
memory and I/O devices, on-chip memory and system sup-
port functions. Among these are legacy functions, handled
by the Host Bus Interface (HBI), that include the Real-Time
Clock and Advanced Power Control (RTC and APC), and
peripherals, including: frequency-multiplier-based High Fre-
quency Clock Generator (HFCG), Power Mode Control
(PMC), Interrupt Control Unit (ICU), Multi-Input Wake-Up
(MIWU), General Purpose I/O Ports (GPIO) with internal
keyboard matrix scanning, PS/2
Interface, ACCESS.bus
(ACB) Interface, two Multi-Function 16-Bit Timers (MFT16),
periodic interrupt timer and WATCHDOG
(TWD), ADC
and DAC.
The PC87570 highly efficient architecture and its on-chip
peripherals, supporting functions and low power consump-
tion, provide a highly integrated solution for portable note-
book PCs, sub-notebook PCs and other portable devices.
Outstanding Features
G
Shared BIOS memory
G
Fully ACPI-compliant embedded controller
G
Proprietary PS/2 shift mechanism
G
Extremely low current consumption in Idle mode
G
Support for a variety of off-chip wake-up sources
G
Scalable design for growth without controller upgrade
Block Diagram
Core Bus
Peripheral Bus
Bus
KBC + PM
Host I/F
RTC +
APC
Processing
Unit
HBI
Host Bus
(ISA Compatible)
Host
Config
RAM
Memory
External
Memory
+ I/O
BIU
CR16A Core
32.768
KHz
ICU
HFCG
PMC
ADC
KBSCAN
ACB
I/F
GPIO
WDG
Peripherals
Legacy
ROM
MIWU
IBM
, PC-AT
and PS/2
are registered trademarks of International Business Machines Corporation.
ACCESS.bus
is a registered trademark of Digital Equipment Corporation.
I
2
C
is a registered trademark of Philips.
CompactRISC
TM
, WATCHDOG
TM
and TRI-STATE
are trademarks of National Semiconductor Corporation.
MFT16
(X2)
Timer +
Adapter
PS/2
I/F
CLK
DAC
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PC87570-ICC/VUL 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PC87570 Keyboard and Power Management Controller
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