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)： 14/55頁(yè)
文件大?。?/td> 318K
代理商： XR17L152
á
DISCONTINUED
XR17L152
3.3V PCI BUS DUAL UART
REV. 1.1.0
14
TIMER [15:8] (default 0x00)
Reserved.
TIMERMSB [31:24] and TIMERLSB [23:16]
TIMERMSB and TIMERLSB form a 16-bit value. The least-significant bit of the timer is being bit [0] of the
TIMERLSB with most-significant-bit being bit-7 in TIMERMSB. Notice that these registers do not hold the
current counter value when read. Reading the TIMERCNTL register will clear its interrupt. Default value is zero
(timer disabled) upon powerup and reset.
1.2.3
Each bit selects 8X or 16X sampling rate for that UART channel, bit-0 is channel 0. Logic 0 (default) selects
normal 16X sampling with logic one selects 8X sampling rate. Transmit and receive data rates will double by
selecting 8X.
8XMODE [7:0] (default 0x00)
1.2.4
Reserved.
1.2.5
The 8-bit Reset register [RESET] provides the software with the ability to reset the UART(s) when there is a
need. Each bit is self-resetting after it is written a logic 1 to perform a reset to that channel. All registers in that
channel will be reset to the default condition, see
Table 18
for details. Bit-0 =1 resets UART channel 0 while bit-
1=1 resets channel 1.
REGA [15:8]
(default 0x00)
RESET [23:16] - (default 0x00)
TIMERCNTL Register
Rsvd
Rsvd
Rsvd
MPIO[0]
Control
Clock
Select
Single/
Re-trigger
Start/
Stop
INT
Enable
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
TIMERMSB Register
Bit-15 Bit-14 Bit-13 Bit-12 Bit-11 Bit-10 Bit-9 Bit-8
TIMERLSB Register
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
16-Bit Timer/Counter Programmable Registers
Rsvd
Rsvd
Rsvd Rsvd Rsvd Rsvd Ch-1 Ch-0
8XMODE Register
Individual UART Channel 8X Clock Mode Enable
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
Rsvd
Rsvd
Rsvd Rsvd Rsvd Rsvd
Ch-1
Ch-0
RESET Register
Individual UART Channel Reset Enable
Bit-7 Bit-6 Bit-5 Bit-4 Bit-3 Bit-2 Bit-1 Bit-0
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PDF描述
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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:EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L152IM 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS DUAL UART
XR17L154 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS QUAD UART
XR17L154CV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Telecomm/Datacomm
XR17L154IV 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V PCI BUS QUAD UART
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