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參數(shù)資料
| 型號： | PC8477B |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Advanced Floppy Disk Controller |
| 中文描述： | 先進的軟盤控制器 |
| 文件頁數(shù)： | 1/54頁 |
| 文件大?。?/td> | 577K |
| 代理商： | PC8477B |
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TL/F/11332
P
August 1993
PC8477B (SuperFDC
TM
)
Advanced Floppy Disk Controller
General Description
The PC8477B CMOS advanced floppy disk controller is an
enhanced version of National’s DP8473 floppy controller.
The PC8477B is software compatible with the DP8473 and
NEC
m
PD765 floppy disk controllers. In addition, it is pin and
software compatible with the Intel 82077AA floppy control-
ler. The PC8477B, a 24 MHz crystal, a device chip select,
and a resistor package are all that is needed for a complete
PC-AT
é
, PS/2
é
or EISA floppy controller solution.
The PC8477B includes advanced features such as a
16 byte FIFO (Burst and Non-Burst modes), support of Per-
pendicular Recording Mode disk drives, PS/2 diagnostic
registers for Model 30 and Models 50/60/80, standard
CMOS disk I/O, and additional commands to control these
new features. The 16 byte FIFO will increase system per-
formance at higher data rates and with multi-tasking bus
structures. This controller is designed to fit into all PC-AT,
EISA, and PS/2 designs, as well as other advanced applica-
tions.
Features
Y
Pin and software compatible with Intel 82077AA FDC
Y
Software compatible with NSC’s DP8473
Y
16 byte FIFO (default disabled)
D Burst and Non-Burst modes
D Programmable threshold
Y
Perpendicular Mode Recording drive support
Y
High performance internal analog data separator (no
external filter components required)
Y
Low power CMOS with manual power down mode
Y
Automatic power down mode, for complete software
transparency
Y
Integrates all PC-AT, and PS/2 logic
D On chip Oscillator
D PC compatible FDC address decode
D PS/2 Model 30 and Model 50/60/80 diagnostic
registers
D DMA control circuitry
D High current CMOS disk interface outputs
D Data Rate and Digital Output registers
D 12 mA
m
P bus interface buffers
Y
Data Rate Support: 250/300 kb/s, 500 kb/s,
and 1 Mb/s
Y
Write precompensation software programmable
Y
68 pin PLCC package
Y
60 pin PQFP package
Ideal for space limited applications
Functional Block Diagram
TL/F/11332–3
FIGURE 1-1
SuperFDC
TM
is a trademark of National Semiconductor Corporation.
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
IBM
é
, PC-AT
é
and PS/2
é
are registered trademarks of International Business Machines Corp.
C
1995 National Semiconductor Corporation
RRD-B30M75/Printed in U. S. A.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PC8477BVF-1 | Advanced Floppy Disk Controller |
| PC8477BV-1 | Advanced Floppy Disk Controller |
| PC87109VBE | Male Cap Connector Type:Radio Frequency RoHS Compliant: Yes |
| PC87120 | PC87120 SuperAT⑩ |
| PC87200VUL160A | PC87200 PCI to ISA Bridge |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PC8477BV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Floppy Disk Controller |
| PC8477BV-1 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Floppy Disk Controller |
| PC8477BV-30 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Floppy Disk Controller |
| PC8477BVF | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Floppy Disk Controller |
| PC8477BVF-1 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Advanced Floppy Disk Controller |
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