參數(shù)資料
型號: XR17D152CMTR-F
廠商: Exar Corporation
文件頁數(shù): 9/68頁
文件大?。?/td> 0K
描述: IC UART PCI BUS DUAL 100TQFP
標(biāo)準(zhǔn)包裝: 1,000
特點: *
通道數(shù): 2,DUART
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 3.3V,5V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
安裝類型: 表面貼裝
封裝/外殼: 100-TQFP
供應(yīng)商設(shè)備封裝: 100-TQFP(14x14)
包裝: 帶卷 (TR)
á
XR17D152
REV. 1.2.0
UNIVERSAL (3.3V AND 5V) PCI BUS DUAL UART
17
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.
2.2.3
8XMODE [7:0] (default 0x00)
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.
2.2.4
REGA [15:8] Reserved
2.2.5
RESET [23:16] - (default 0x00)
Bits 0 to 1 of the 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 19 on page 50 for details. Bit-0 =1 resets UART
channel 0 while bit-1=1 resets channel 1.
TIM E RM SB Reg ister
B it-1 5
B it-1 4
B it-1 3
B it-1 2
B it-1 1
B it-1 0
B it-9
B it-8
TIM E RLS B Register
B it-7
B it-6
B it-5
B it-4
B it-3
B it-2
B it-1 B it-0
16-B it T im e r/C o u n te r P rog ra m m able R e gisters
Rsvd
Rsvd Rsvd Rsvd Rsvd Ch-1 Ch-0
8XM O DE Register
Individual UA RT Channel 8X Clock Mode E nable
B it-7 Bit-6
B it-5
B it-4
Bit-3
Bit-2
B it-1 B it-0
Rsvd
Rsvd Rsvd Rsvd Rsvd Ch-1 Ch-0
RES ET Register
Individual UA RT Channel Reset Enable
B it-7 Bit-6
B it-5
B it-4
Bit-3
B it-2
B it-1
Bit-0
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