W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 14

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Host Interface, continued
4.2
IRQ_H
IRSL2
SERIRQ
CLKIN
A12
DSRB
A13
DCDA
DCDB
A14
RIA
A15
CTSA
CTSB
DSRA
RIB
DACK_ D
SMI
SYMBOL
SYMBOL
Serial Port Interface
PIN
91
PIN
7
8
34
47
33
48
32
49
31
50
OUT
OUT
OUT
OUT
IN
I/O
IN
I/O
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
INt
INt
ts
t
12t
12t
12t
12t
t
t
t
t
t
t
t
t
t
t
Interrupt request signal H.
IR module mode selection 2.
DMA acknowledge signal D.
Serial Interrupt output, when the function of the serial IRQ is set
to logic 1 defined in the CR31.bit2 (IRQMODS).
24MHz/48MHZ clock input. CLKINSEL bit in CR2C register
should be correctly reset/set according to the input frequency.
For the power management, the SMI is and active low by the
power management events, that generate an nSCI in ACPI mode.
Clear To Send is the modem control input.
Clear To Send is the modem control input.
System address bus bit 12, when 16-bit address decoder is
selected, that is, nEN16SA (CR16.bit6) is set to logic 0.
Data Set Ready. An active low indicates the modem or data set
is ready to establish a communication link and transfer data to
the UART.
Data Set Ready. An active low indicates the modem or data set
is ready to establish a communication link and transfer data to
the UART.
System address bus bit 13, when 16-bit address decoder is
selected.
Data Carrier Detect. An active low indicates the modem or data
set has detected a data carrier.
Data Carrier Detect. An active low indicates the modem or data
set has detected a data carrier.
System address bus bit 14, when 16-bit address decoder is
selected.
Ring Indicator. An active low indicates that a ring signal is being
received by the modem or data set.
Ring Indicator. An active low indicates that a ring signal is being
received by the modem or data set.
System address bus bit 15, when 16-bit address decoder is
selected.
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W83877ATF/W83877ATG
FUNCTION
FUNCTION
Publication Release Date:November 2006
Version 1.0