參數(shù)資料
型號(hào)： XR17L152
廠商： Exar Corporation
英文描述： 3.3V PCI BUS DUAL UART
中文描述： 3.3V的PCI總線雙UART
文件頁(yè)數(shù)： 5/55頁(yè)
文件大小： 318K
代理商： XR17L152
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
á
DISCONTINUED
5
N
OTE
:
Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
XTAL1
77
I
Crystal or external clock input of up to data rate of 3.125Mbps at 33MHz 3.3V
and 8X sampling. See AC Characterization table. Caution: this input is not 5V
tolerant.
XTAL2
76
O
Crystal or buffered clock output.
TMRCK
75
I
16-bit timer/counter external clock input.
ENIR
74
I
Global Infrared mode enable (active high). During power up or reset, this pin
is sampled and if it is a logic high, both UARTs are set for infrared mode. Also,
the infrared mode bit, MCR[6], is set in both channels. Software can override
this pin thereafter and enable or disable infrared mode.
EN485#
65
I
Global AutoRS485 half-duplex direction control enable (active low). During
power up or reset, this pin is sampled and if it is a logic high, both UARTs are
set for Auto RS485 Mode. Also, the Auto RS485 bit, FCTR[5], is set in both
channels. Software can override this pin thereafter and enable or disable it.
TEST#
79
I
Factory Test. Connect to VCC for normal operation.
VCC
54, 80
PWR
5V or 3.3V power supply for the core logic.
VI/O
10, 22, 32, 43,
89, 100
PWR
PCI bus I/O power supply. 3.3V ONLY (PCI 2.2 Compliance).
GND
1, 11, 23, 33,
44, 53, 78, 88
PWR
Power supply common, ground.
NC
63, 64
No Connection.
PIN DESCRIPTIONS
N
AME
P
IN
#
T
YPE
D
ESCRIPTION
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR17L152CM 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L152IM 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L154 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:3.3V PCI BUS QUAD UART
XR17L154CV 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Telecomm/Datacomm
XR17L154IV 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:3.3V PCI BUS QUAD UART
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