- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358934 > LPC47M112-MW (STANDARD MICROSYSTEMS CORP) ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE PDF資料下載
參數(shù)資料
| 型號： | LPC47M112-MW |
| 廠商： | STANDARD MICROSYSTEMS CORP |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | ENHANCED SUPER I/O CONTROLLER WITH LPC INTERFACE |
| 中文描述： | MULTIFUNCTION PERIPHERAL, PQFP100 |
| 封裝： | 14 X 20 MM, ROHS COMPLIANT, QFP-100 |
| 文件頁數(shù)： | 88/228頁 |
| 文件大?。?/td> | 1269K |
| 代理商： | LPC47M112-MW |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁當(dāng)前第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁
SMSC DS – LPC47M192
Page 88
Rev. 03/30/05
DATASHEET
5. If nWAIT is asserted, the chip inserts wait states into I/O write cycle until the peripheral deasserts
nWAIT or a time-out occurs.
6. The chip drives the final sync, deasserts nDATASTB or nADDRSTRB and latches the data from the
internal data bus for the PData bus.
7. Chip may modify nWRITE, PDIR and nPDATA in preparation of the next cycle.
EPP 1.7 Read
The timing for a read operation (data) is shown in timing diagram EPP 1.7 Read Data cycle. The chip inserts wait
states into the I/O read cycle when nWAIT is active low during the EPP cycle. This can be used to extend the cycle
time. The read cycle can complete when nWAIT is inactive high.
Read Sequence of Operation
1. The host sets PDIR bit in the control register to a logic “1”. This deasserts nWRITE and tri-states the
PData bus.
2. The host initiates an I/O read cycle to the selected EPP register.
3. Chip asserts nDATASTB or nADDRSTRB indicating that PData bus is tri-stated, PDIR is set and the
nWRITE signal is valid.
4. If nWAIT is asserted, the chip inserts wait states into the I/O read cycle until the peripheral deasserts
nWAIT or a time-out occurs.
5. The Peripheral drives PData bus valid.
6. The Peripheral deasserts nWAIT, indicating that PData is valid and the chip may begin the termination
phase of the cycle.
7. The chip drives the final sync and deasserts nDATASTB or nADDRSTRB.
8. Peripheral tri-states the PData bus.
9. Chip may modify nWRITE, PDIR and nPDATA in preparation of the next cycle.
Table 40 - EPP Pin Descriptions
EPP
SIGNAL
nWRITE
PD<0:7>
INTR
EPP NAME
nWrite
Address/Data
Interrupt
TYPE
O
I/O
I
EPP DESCRIPTION
This signal is active low. It denotes a write operation.
Bi-directional EPP byte wide address and data bus.
This signal is active high and positive edge triggered. (Pass
through with no inversion, Same as SPP).
This signal is active low. It is driven inactive as a positive
acknowledgement from the device that the transfer of data is
completed. It is driven active as an indication that the device
is ready for the next transfer.
This signal is active low. It is used to denote data read or
write operation.
This signal is active low. When driven active, the EPP
device is reset to its initial operational mode.
This signal is active low. It is used to denote address read or
write operation.
Same as SPP mode.
Same as SPP mode.
nWAIT
nWait
I
nDATASTB
nData Strobe
O
nRESET
nReset
O
nADDRSTB Address
Strobe
Paper End
Printer
Selected
Status
Error
O
PE
SLCT
I
I
nERR
I
Same as SPP mode.
Note 1
: SPP and EPP can use 1 common register.
Note 2
: nWrite is the only EPP output that can be over-ridden by SPP control port during an EPP cycle. For correct
EPP read cycles, PCD is required to be a low.
7.8.2 EXTENDED CAPABILITIES PARALLEL PORT
ECP provides a number of advantages, some of which are listed below. The individual features are explained in
greater detail in the remainder of this section.
High performance half-duplex forward and reverse channel Interlocked handshake, for fast reliable transfer Optional
single byte RLE compression for improved throughput (64:1) Channel addressing for low-cost peripherals Maintains
link and data layer separation Permits the use of active output drivers permits the use of adaptive signal timing
Peer-to-peer capability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LPC47N252-SD | Advanced Notebook I/O Controller with On-Board FLASH |
| LPC47N252-SG | Advanced Notebook I/O Controller with On-Board FLASH |
| LPC47M172-NR | ADVANCED I/O CONTROLLER WITH MOTHERBOARD GLUE LOGIC |
| LPC47N267-MN | 100 Pin LPC Notebook I/O with X-Bus Interface |
| LPC47N227-MN | 100 Pin Super I/O with LPC Interface for Notebook Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LPC47M133-NC | 制造商:SMSC 功能描述: |
| LPC47M140-NC | 制造商:SMSC 制造商全稱:SMSC 功能描述:128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB |
| LPC47M141-NC | 制造商:SMSC 制造商全稱:SMSC 功能描述:128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB |
| LPC47M142-NC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LPC47M143-NC | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。