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參數資料
| 型號： | W83787F |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | WINBOND I/O WITH SERIAL-INFRARED SUPPORT |
| 中文描述： | 華邦的I /串行O型紅外線支持 |
| 文件頁數： | 53/123頁 |
| 文件大小： | 1751K |
| 代理商： | W83787F |
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W83787IF
Publication ReleaseDate:Sep 1995
- 53 -
Revision A1
5.3.4 Device Control Register (DCR)
The bit definitions are as follows:
7 6 5 4 3 2 1 0
1
1
strobe
autofd
nInit
SelectIn
ackIntEn
Direction
Notes:
Bit 6, 7: These two bits are logic one during a read and cannot be written.
Bit 5: This bit has no effect and the direction is always out if mode = 000 or mode = 010. Direction is
valid in all other modes.
0
the parallel port is in output mode.
1
the parallel port is in input mode.
Bit 4: Interrupt request enable. When this bit is set to a high level, it may be used to enable interrupt
requests from the parallel port to the CPU due to a low to high transition on the
ACK
input.
Bit 3: This bit is inverted and output to the SLIN
output.
0
The printer is not selected.
1
The printer is selected.
Bit 2: This bit is output to the
INIT
output.
Bit 1: This bit is inverted and output to the
AFD
output.
Bit 0: This bit is inverted and output to the
STB
output.
5.3.5 cFifo (Parallel Port Data FIFO) Mode = 010
This mode is defined only for the forward direction. The standard parallel port protocol is used by a
hardware handshake to the peripheral to transmit bytes written or DMAed from the system to this
FIFO. Transfers to the FIFO are byte aligned.
5.3.6 ecpDFifo (ECP Data FIFO) Mode = 011
When the direction bit is 0, bytes written or DMAed from the system to this FIFO are transmitted by a
hardware handshake to the peripheral using the ECP parallel port protocol. Transfers to the FIFO are
byte aligned.
When the direction bit is 1, data bytes from the peripheral are read under automatic hardware
handshake from ECP into this FIFO. Reads or DMAs from the FIFO will return bytes of ECP data to
the system.
5.3.7 tFifo (Test FIFO Mode) Mode = 110
Data bytes may be read, written, or DMAed to or from the system to this FIFO in any direction.
Data in the tFIFO will not be transmitted to the parallel port lines. However, data in the tFIFO may be
displayed on the parallel port data lines.
5.3.8 cnfgA (Configuration Register A) Mode = 111
This register is a read-only register. When it is read, 10H is returned. This indicates to the system that
this is an 8-bit implementation.
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相關代理商/技術參數 |
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| W83787IF | 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O WITH SERIAL-INFRARED SUPPORT |
| W83791D | 制造商:WINBOND 制造商全稱:Winbond 功能描述:Winbond H/W Monitoring IC |
| W83791G | 功能描述:IC MONITOR H/W 48-LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| W83791SD | 制造商:WINBOND 制造商全稱:Winbond 功能描述:H/W MONITORING IC |
| W83791SG | 制造商:WINBOND 制造商全稱:Winbond 功能描述:H/W MONITORING IC |
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