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參數(shù)資料
型號(hào): W83977TF-P
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): 外設(shè)及接口
英文描述: I/O chip disk drive adapter
中文描述: MULTIFUNCTION PERIPHERAL, PQFP128
封裝: PLASTIC, QFP-128
文件頁(yè)數(shù): 20/181頁(yè)
文件大小: 2600K
代理商: W83977TF-P
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W83977F/ W83977AF
PRELIMINARY
Publication Release Date: March 1998
-9 -
Revision 0.58
1.2 Advanced Power Management, continued
SYMBOL
PIN
I/O
FUNCTION
PANSW
73
IN
t
CR2B bit7, 6=00 (default): On/Off switch for Advanced Power
Management (APM). This signal indicates a request to switch
the power on or off. When the V
DD
of the chip is disrupted, a
high to low transition on this pin indicates a switch on request.
When V
DD
returns, a high to low transition on this pin indicates a
switch off request.
CR2B bit7, 6=01: General purpose I/O port 2, bit 3. It can be
configured as Keyboard P15 I/O port.
GP23 (P15)
I/O
12t
DCDC
IN
t
CR2B bit7, 6=11: DCD input of UART C.
[W83977AF only]
1.3 Serial Port Interface
SYMBOL
PIN
I/O
FUNCTION
CTSA
CTSB
41
48
IN
t
Clear To Send is the modem control input.
The function of these pins can be tested by reading Bit 4 of the
handshake status register.
DSRA
DSRB
42
49
IN
t
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
RTSA
HEFRAS
43
I/O
8t
UART A Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
During power-on reset, this pin is pulled down internally and is
defined as HEFRAS, which provides the power-on value for
CR26 bit 6 (HEFRAS). A 4.7 k
is recommended if intends to
pull up. (select 370H as configuration I/O port address)
RTSB
nPENPLL
50
I/O
8t
UART B Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
During power-on reset, this pin is pulled down internally and is
defined as nPENPLL, which provides the power-on value for
CR24 bit 5 (ENPLL) and bit 6. A 4.7 k
is recommended if
intends to pull up. (PLL is disabled)
DTRA
PNPCSV
44
I/O
8t
UART A Data Terminal Ready. An active low signal informs the
modem or data set that the controller is ready to communicate.
During power-on reset, this pin is pulled down internally and is
defined as PNPCSV , which provides the power-on value for
CR24 bit 0 (PNPCSV ). A 4.7 k
is recommended if intends to
pull up. (clear the default value of FDC, UARTs, and PTR)
相關(guān)PDF資料
PDF描述
W83977TF-PW I/O chip disk drive adapter
W83977EF-AW WINBOND I/O
W83977EF-PW WINBOND I/O
W83977TF-A I/O chip disk drive adapter
W83977A WINBOND I/O
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
W83977TF-PW 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:I/O chip disk drive adapter
W83C42 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:KEYBOARD CONTROLLER
W83C42P 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:KEYBOARD CONTROLLER
W83C43 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:KEYBOARD CONTROLLER
W83C45 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Keyboard Controller