REV. 1.0.2 HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE 2.10 Transmitter The transmitter section c" />
參數(shù)資料
型號: XR16V2651IL-F
廠商: Exar Corporation
文件頁數(shù): 5/51頁
文件大小: 0K
描述: IC UART FIFO 32B DUAL 32QFN
標準包裝: 490
特點: *
通道數(shù): 2,DUART
FIFO's: 32 字節(jié)
規(guī)程: RS232,RS422
電源電壓: 2.25 V ~ 3.6 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:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 32-QFN 裸露焊盤(5x5)
包裝: 托盤
XR16V2651
13
REV. 1.0.2
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE FEATURE
2.10
Transmitter
The transmitter section comprises of an 8-bit Transmit Shift Register (TSR) and 32 bytes of FIFO which
includes a byte-wide Transmit Holding Register (THR). TSR shifts out every data bit with the 16X/8X/4X
internal clock. A bit time is 16/8/4 clock periods (see DLD[5:4]). The transmitter sends the start-bit followed by
the number of data bits, inserts the proper parity-bit if enabled, and adds the stop-bit(s). The status of the FIFO
and TSR are reported in the Line Status Register (LSR bit-5 and bit-6).
TABLE 6: TYPICAL DATA RATES WITH A 24 MHZ CRYSTAL OR EXTERNAL CLOCK AT 16X SAMPLING
Required
Output Data
Rate
DIVISOR FOR
16x Clock
(Decimal)
DIVISOR
OBTAINABLE IN
V2651
DLM PROGRAM
VALUE (HEX)
DLL PROGRAM
VALUE (HEX)
DLD PROGRAM
VALUE (HEX)
DATA ERROR
RATE (%)
400
3750
E
A6
0
2400
625
2
71
0
4800
312.5
312 8/16
1
38
8
0
9600
156.25
156 4/16
0
9C
4
0
10000
150
0
96
0
19200
78.125
78 2/16
0
4E
2
0
25000
60
0
3C
0
28800
52.0833
52 1/16
0
34
1
0.04
38400
39.0625
39 1/16
0
27
1
0
50000
30
0
1E
0
57600
26.0417
26 1/16
0
1A
1
0.08
75000
20
0
14
0
100000
15
0
F
0
115200
13.0208
13
0
D
0
0.16
153600
9.7656
9 12/16
0
9
C
0.16
200000
7.5
7 8/16
0
7
8
0
225000
6.6667
6 11/16
0
6
B
0.31
230400
6.5104
6 8/16
0
6
8
0.16
250000
6
0
6
0
300000
5
0
5
0
400000
3.75
3 12/16
0
3
C
0
460800
3.2552
3 4/16
0
3
4
0.16
500000
3
0
3
0
750000
2
0
2
0
921600
1.6276
1 10/16
0
1
A
0.16
1000000
1.5
1 8/16
0
1
8
0
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