TL16C752B-EP datasheet(9/40 Pages) TI1

tên linh kiện	TL16C752B-EP

Giải thích chi tiết về linh kiện	3.3 V DUAL UART WITH 64-BYTE FIFO

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UART 1

Parallel to Serial

Serial to Parallel

Xon-1 Word

Xon-2 Word

Xoff-1 Word

Transmit

FIFO

Serial to Parallel

Parallel to Serial

Xon-1 Word

Xoff-1 Word

Xoff-2 Word

Receive

FIFO

Data

Xoff − Xon − Xoff

Compare

Programmed

Xon−Xoff

Characters

UART 2

Xon-2 Word

TL16C752B-EP

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SGLS153B – FEBRUARY 2003 – REVISED DECEMBER 2007

Figure 4. Software Flow Control Example

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.

UART1 begins transmission and sends 52 characters, at which point UART2 generates an interrupt to its

processor to service the RCV FIFO, but assume the interrupt latency is fairly long. UART1 continues sending

characters until a total of 60 characters have been sent. At this time UART2 transmits a 0F to UART1, informing

UART1 to halt transmission. UART1 likely sends the 61st character, while UART2 is sending the Xoff character.

UART2 is serviced and the processor reads enough data out of the RCV FIFO that the level drops to 32. UART2

now sends a 0D to UART1, informing UART1 to resume transmission.

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Texas Instruments	TL16C752B-EP	454Kb / 35P	[Old version datasheet] 3.3-V DUAL UART WITH 64-BYTE FIFO

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Texas Instruments	TL16C752	402Kb / 33P	[Old version datasheet] 3.3-V DUAL UART WITH 64-BYTE FIFO
	TL16C752B	503Kb / 36P	[Old version datasheet] 3.3-V DUAL UART WITH 64-BYTE FIFO
	TL16C752B-EP	454Kb / 35P	[Old version datasheet] 3.3-V DUAL UART WITH 64-BYTE FIFO
	TL16C752D-Q1	907Kb / 53P	[Old version datasheet] Dual UART With 64-Byte FIFO
NXP Semiconductors	SC16C752	604Kb / 47P	Dual UART with 64-byte FIFO Rev. 04-20 June 2003
Texas Instruments	TL16C752C	1Mb / 48P	[Old version datasheet] DUAL UART WITH 64-BYTE FIFO
	TL16C752C	1Mb / 50P	[Old version datasheet] DUAL UART WITH 64-BYTE FIFO
	TL16C752C	1Mb / 52P	[Old version datasheet] DUAL UART WITH 64-BYTE FIFO
	TL16C752D	1Mb / 56P	[Old version datasheet] TL16C752D Dual UART With 64-Byte FIFO
	TL16C754	488Kb / 39P	[Old version datasheet] QUAD UART WITH 64-BYTE FIFO

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