參數(shù)資料
型號: XR16L788IQ-F
廠商: Exar Corporation
文件頁數(shù): 17/54頁
文件大?。?/td> 0K
描述: IC UART 64B 3.3V OCTAL 100QFP
標(biāo)準(zhǔn)包裝: 66
特點(diǎn): *
通道數(shù): 8
FIFO's: 64 字節(jié)
規(guī)程: RS485
電源電壓: 2.97 V ~ 5.5 V
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-BQFP
供應(yīng)商設(shè)備封裝: 100-QFP(14x20)
包裝: 托盤
其它名稱: 1016-1284
XR16L788
24
HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
REV. 1.2.3
3.1.2.1
TIMER [7:0] (default 0x00):
Reserved.
3.1.2.2
TIMERMSB [7:0] and TIMERLSB [7:0]
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. Reading the TIMERCNTL register will clear its
interrupt. Default value is zero upon power-up and reset.
3.1.3
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.
3.1.4
REGA [15:8](default 0x00)
Reserved.
TABLE 10: TIMER CONTROL REGISTER
TIMERCNTL [0]
Logic zero (default) disables Timer-Counter interrupt and logic one enables the interrupt, reading the
TIMERCNTL clears the interrupt.
TIMERCNTL [1]
Logic zero (default) stops/pauses the timer and logic one starts/re-starts the timer/counter.
TIMERCNTL [2]
Logic zero (default) selects re-trigger timer function and logic one selects one-shot (timer function.
TIMERCNTL [3]
Logic zero (default) selects internal and logic one selects external clock to the timer/counter.
TIMERCNTL [7:4]
Reserved (defaults to zero).
TIMERCNTL Register
Rsvd
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
Ch-6
Ch-7
Ch-5 Ch-4 Ch-3 Ch-2 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
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