- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372122 > SC16C754 (NXP Semiconductors N.V.) Quad UART with 64-byte FIFO PDF資料下載
參數(shù)資料
| 型號： | SC16C754 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Quad UART with 64-byte FIFO |
| 中文描述： | 四UART的64字節(jié)FIFO |
| 文件頁數(shù)： | 12/49頁 |
| 文件大?。?/td> | 622K |
| 代理商： | SC16C754 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁當(dāng)前第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁
Philips Semiconductors
SC16C754
Quad UART with 64-byte FIFO
Product data
Rev. 04 — 19 June 2003
12 of 49
9397 750 11618
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
It is assumed that software flow control and hardware flow control will never be
enabled simultaneously.
Figure 7
shows an example of software flow control.
6.3.3
Software flow control example
Assumptions:
UART1 is transmitting a large text file to UART2. Both UARTs are
using software flow control with single character Xoff (0F) and Xon (0D) tokens. Both
have Xoff threshold (TCR[3:0] = F) set to 60, and Xon threshold (TCR[7:4] = 8) set to
32. Both have the interrupt receive threshold (TLR[7:4] = D) set to 52.
UART 1 begins transmission and sends 52 characters, at which point UART2 will
generate an interrupt to its processor to service the RCV FIFO, but assume the
interrupt latency is fairly long. UART1 will continue sending characters until a total of
60 characters have been sent. At this time, UART2 will transmit a 0F to UART1,
informing UART1 to halt transmission. UART1 will likely send the 61
st
character while
UART2 is sending the Xoff character. Now UART2 is serviced and the processor
reads enough data out of the RX FIFO that the level drops to 32. UART2 will now
send a 0D to UART1, informing UART1 to resume transmission.
6.4 Reset
Table 4
summarizes the state of register after reset.
Fig 7.
Software flow control example.
TRANSMIT FIFO
PARALLEL-TO-SERIAL
SERIAL-TO-PARALLEL
Xon-1 WORD
Xon-2 WORD
Xoff-1 WORD
Xoff-2 WORD
RECEIVE FIFO
PARALLEL-TO-SERIAL
SERIAL-TO-PARALLEL
Xon-1 WORD
Xon-2 WORD
Xoff-1 WORD
Xoff-2 WORD
UART2
UART1
002aaa229
DATA
Xoff–Xon–Xoff
COMPARE
PROGRAMMED
Xon-Xoff
CHARACTERS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC16C754IA68 | Quad UART with 64-byte FIFO |
| SC16C754IB80 | Quad UART with 64-byte FIFO |
| SC2000 | Universal Timeslot Interchange |
| SC2001G-10 | Bus Exchanger |
| SC2001G-13 | Bus Exchanger |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC16C754B | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 64-byte FIFOs |
| SC16C754BIA68 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C754BIA68,512 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C754BIA68,518 | 功能描述:UART 接口集成電路 4CH. UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
| SC16C754BIA68,529 | 功能描述:UART 接口集成電路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。