最新免费av在线观看,亚洲综合一区成人在线,中文字幕精品无码一区二区三区,中文人妻av高清一区二区,中文字幕乱偷无码av先锋

LPC47M172_07 Datasheet

  • LPC47M172_07

  • SMSC Corporation [Advanced I/O Controller with Motherboard ...

  • 1113.49KB

  • SMSC   SMSC

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

Advanced I/O Controller with Motherboard GLUE Logic
Datasheet
Parallel Port Mode Register 2, 0xF1 in Serial Port Logical Device Configuration Registers) is 鈥?鈥? the
TMOUT bit is cleared on the trailing edge of a read of the EPP Status Register.
BITS 1, 2
Are not implemented as register bits, during a read of the Printer Status Register these bits are a low level.
BIT 3 nERR 鈥?nERROR
The level on the nERROR input is read by the CPU as bit 3 of the Printer Status Register. A logic 0
means an error has been detected; a logic 1 means no error has been detected.
BIT 4 SLT - PRINTER SELECTED STATUS
The level on the SLCT input is read by the CPU as bit 4 of the Printer Status Register. A logic 1 means
the printer is on line; a logic 0 means it is not selected.
BIT 5 PE - PAPER END
The level on the PE input is read by the CPU as bit 5 of the Printer Status Register. A logic 1 indicates a
paper end; a logic 0 indicates the presence of paper.
BIT 6 nACK - ACKNOWLEDGE
The level on the nACK input is read by the CPU as bit 6 of the Printer Status Register. A logic 0 means
that the printer has received a character and can now accept another. A logic 1 means that it is still
processing the last character or has not received the data.
BIT 7 nBUSY - nBUSY
The complement of the level on the BUSY input is read by the CPU as bit 7 of the Printer Status Register.
A logic 0 in this bit means that the printer is busy and cannot accept a new character. A logic 1 means that
it is ready to accept the next character.
7.4.3
Control Port
ADDRESS OFFSET = 02H
The Control Port is located at an offset of 鈥?2H鈥?from the base address. The Control Register is initialized
by the RESET input, bits 0 to 5 only being affected; bits 6 and 7 are hard wired low.
BIT 0 STROBE - STROBE
This bit is inverted and output onto the nSTROBE output.
BIT 1 AUTOFD - AUTOFEED
This bit is inverted and output onto the nAutoFd output. A logic 1 causes the printer to generate a line feed
after each line is printed. A logic 0 means no autofeed.
BIT 2 nINIT - INITIATE OUTPUT
This bit is output onto the nINITP output without inversion.
BIT 3 SLCTIN - PRINTER SELECT INPUT
This bit is inverted and output onto the nSLCTIN output. A logic 1 on this bit selects the printer; a logic 0
means the printer is not selected.
SMSC/Non-SMSC Register Sets (Rev.
01-11-07)
Page 92
SMSC LPC47M172
DATASHEET

LPC47M172_07 PDF文件相關(guān)型號

LPC47M172-NW

LPC47M172_07相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！