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參數(shù)資料
| 型號： | PC87393F-VJG |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | 100-Pin LPC SuperI/O Devices for Portable Applications |
| 中文描述： | MULTIFUNCTION PERIPHERAL, PQFP100 |
| 封裝： | TQFP-100 |
| 文件頁數(shù)： | 64/148頁 |
| 文件大?。?/td> | 1733K |
| 代理商： | PC87393F-VJG |
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1.0 Signal/Pin Connection and Description (Continued)
22
www.national.com
1.5.10
Serial Port 1 and Serial Port 2 (SP1 and SP2)
Signal
Pin/s
I/O Buffer Type Power Well
Description
CTS1
CTS2
60
79
IINTS
VDD
Clear to Send. When low, indicate that the modem or other data
transfer device is ready to exchange data.
DCD1
DCD2
55
74
IINTS
VDD
Data Carrier Detected. When low, indicate that the modem or
other data transfer device has detected the data carrier.
DSR1
DSR2
56
75
IINTS
VDD
Data Set Ready. When low, indicate that the data transfer device,
e.g., modem, is ready to establish a communications link.
DTR1_
BOUT1
DTR2_
BOUT2
61
80
OO3/6
VDD
Data Terminal Ready. When low, indicate to the modem or other
data transfer device that the UART is ready to establish a
communications link. After a system reset, these pins provide the
DTR function and set these signals to inactive high. Loopback
operation holds them inactive.
Baud Output. Provides the associated serial channel baud rate
generator output signal if test mode is selected, i.e., bit 7 of the
EXCR1 register is set.
DTR1_BOUT1 is used also as BADDR.
RI1
RI2
62
81
IINTS
VDD
Ring Indicator. When low, indicate that a telephone ring signal
has been received by the modem. They are monitored during
power-off for wake-up event detection.
RTS1
RTS2
58
77
OO3/6
VDD
Request to Send. When low, indicate to the modem or other data
transfer device that the corresponding UART is ready to exchange
data. A system reset sets these signals to inactive high, and
loopback operation holds them inactive.
RTS1 is used also as TEST.
SIN1
SIN2
57
76
IINTS
VDD
Serial Input. Receive composite serial data from the
communications link (peripheral device, modem or other data
transfer device).
SOUT1
SOUT2
59
78
OO3/6
VDD
Serial Output. Send composite serial data to the communications
link (peripheral device, modem or other data transfer device).
These signals are set active high after a system reset.
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