參數(shù)資料
型號: XR16L784CV
廠商: EXAR CORP
元件分類: 微控制器/微處理器
英文描述: HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
中文描述: 4 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, LQFP-64
文件頁數(shù): 23/52頁
文件大小: 625K
代理商: XR16L784CV
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REV. 1.2.0
XR16L784
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
23
TIMER [7:0] (default 0x00):
Reserved.
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 powerup and reset.
3.1.3
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)
3.1.4
3.1.5
REGA [7:0] reserved
(default 0x00)
RESET [7:0] (default 0x00)
The 8-bit Reset register [RESET] provides the software with the ability to reset individual 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
for details. As an example, bit-0 =1 resets UART
channel 0 with bit-3=1 resets channel 3.
TIMERCNTL Register
Rsvd
Rsvd
Rsvd
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
Rsvd
Rsvd
Rsvd Rsvd 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
Rsvd
Rsvd
Rsvd Rsvd Ch-3 Ch-2 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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XR16L784IV 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART