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): 36/52頁
文件大?。?/td> 625K
代理商: XR16L784CV
XR16L784
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
á
REV. 1.2.0
36
4.11
This is a 8-bit general purpose register for the user to store temporary data. The content of this register is
preserved during sleep mode but becomes 0xFF (default) after a reset or a power off-on cycle.
4.12
FEATURE CONTROL REGISTER (FCTR) - Read/Write
This register controls the UART enhanced functions that are not available on ST16C554 or ST16C654.
FCTR [3:0] - Auto RTS/DTR Flow Control Hysteresis Select
These bits select the auto RTS/DTR flow control hysteresis and only valid when TX and RX Trigger Table-D is
selected (FCTR bit-6 and 7 are set to logic 1). The RTS/DTR hysteresis is referenced to the RX FIFO trigger
level. After reset, these bits are set to logic 0 selecting the next FIFO trigger level for hardware flow control.
Table 17
below shows the 16 selectable hysteresis levels.
SCRATCH PAD REGISTER (SPR) - Read/Write
T
ABLE
16: A
UTO
RS485 H
ALF
-
DUPLEX
D
IRECTION
C
ONTROL
D
ELAY
FROM
T
RANSMIT
-
TO
-R
ECEIVE
MSR[7]
MSR[6]
MSR[5]
MSR[4]
D
ELAY
IN
D
ATA
B
IT
(
S
) T
IME
0
0
0
0
0
0
0
0
1
1
0
0
1
0
2
0
0
1
1
3
0
1
0
0
4
9
1
0
1
5
0
1
1
0
6
0
1
1
1
7
1
0
0
0
8
1
0
0
1
9
1
0
1
0
10
1
0
1
1
11
1
1
0
0
12
1
1
0
1
13
1
1
1
0
14
1
1
1
1
15
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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