- 您現(xiàn)在的位置：買(mǎi)賣IC網(wǎng) > PDF目錄156551 > 37C669 (SMSC Corporation) DIODE SCHOTTKY SINGLE 25V 200mW 0.5V-vf 200mA-IFM 30mA-IF 2uA-IR SOD-323 3K/REEL PDF資料下載
參數(shù)資料
| 型號(hào)： | 37C669 |
| 廠商： | SMSC Corporation |
| 英文描述： | DIODE SCHOTTKY SINGLE 25V 200mW 0.5V-vf 200mA-IFM 30mA-IF 2uA-IR SOD-323 3K/REEL |
| 中文描述： | 電腦98/99順從超級(jí)I / O軟盤(pán)控制器與紅外線支持 |
| 文件頁(yè)數(shù)： | 8/164頁(yè) |
| 文件大?。?/td> | 621K |
| 代理商： | 37C669 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)當(dāng)前第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)
105
Command/Data
ECP Mode supports two advanced features to
improve the effectiveness of the protocol for
some
applications.
The
features
are
implemented by allowing the transfer of normal
8-bit data or 8-bit commands.
When in the forward direction, normal data is
transferred when HostAck is high and an 8 bit
command is transferred when HostAck is low.
The most significant bit of the command
indicates whether it is a run-length count (for
compression) or a channel address.
When in the reverse direction, normal data is
transferred when PeriphAck is high and an 8-bit
command is transferred when PeriphAck is low.
The most significant bit of the command is
always zero. Reverse channel addresses are
seldom used and may not be supported in
hardware.
Table 42
Forward Channel Commands (HostAck Low)
Reverse Channel Commands (PeripAck Low)
D7
D[6:0]
0
Run-Length Count (0-127)
(mode 0011 0X00 only)
1
Channel Address (0-127)
Data Compression
The FDC37C669 supports run length encoded
(RLE) decompression in hardware and can
transfer compressed data to a peripheral. Run
length encoded (RLE) compression in hardware
is not supported. To transfer compressed data
in ECP mode, the compression count is written
to the ecpAFifo and the data byte is written to
the ecpDFifo.
Compression
is
accomplished
by
counting
identical bytes and transmitting an RLE byte
that indicates how many times the next byte is
to
be
repeated.
Decompression
simply
intercepts
the
RLE
byte
and
repeats
the
following byte the specified number of times.
When a run-length count is received from a
peripheral,
the
subsequent
data
byte
is
replicated the specified number of times. A
run-length count of zero specifies that only one
byte of data is represented by the next data
byte, whereas a
run-length
count
of
127
indicates that the next byte should be expanded
to 128 bytes. To prevent data expansion,
however, run-length counts of zero should be
avoided.
Pin Definition
The drivers for nStrobe, nAutoFd, nInit
and
nSelectIn
are
open-collector
in
mode
000
and are push-pull in all other modes.
ISA Connections
The interface can never stall causing the host to
hang. The width of data transfers is strictly
controlled on an I/O address basis per this
specification. All FIFO-DMA transfers are byte
wide, byte aligned and end on a byte boundary.
(The PWord value can be obtained by reading
Configuration Register A,
cnfgA, described in
the next section).
Single byte wide transfers
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 37C672 | ENHANCED SUPER I/O CONTROLLER WITH FAST IR |
| 37C67X | ENHANCED SUPER I/O CONTROLLER WITH FAST IR |
| 37C957FR | ULTRA I/O CONTROLLER FOR PORTABLE APPLICATIONS |
| 37FMA1-ABW31N | SPECIAL SWITCH-PIEZO SWITCH, SPST, MOMENTARY, 0.2A, 24VDC, PANEL MOUNT-THREADED |
| 37FML1-BEW31N | SPECIAL SWITCH-PIEZO SWITCH, SPST, MOMENTARY, 0.2A, 24VDC, PANEL MOUNT-THREADED |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 37C672 | 制造商:SMSC 制造商全稱:SMSC 功能描述:ENHANCED SUPER I/O CONTROLLER WITH FAST IR |
| 37C67X | 制造商:SMSC 制造商全稱:SMSC 功能描述:ENHANCED SUPER I/O CONTROLLER WITH FAST IR |
| 37C-6BH-5-5 | 制造商:Birtcher Products 功能描述: |
| 37C72U-185 | 制造商:White-Rodgers 功能描述: |
| 37C73U-170 | 制造商:White-Rodgers 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。