參數(shù)資料
型號: TL16C552AMPN
廠商: Texas Instruments, Inc.
英文描述: DUAL ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH FIFO
中文描述: 雙異步通信元帶有FIFO
文件頁數(shù): 14/39頁
文件大小: 545K
代理商: TL16C552AMPN
TL16C552A, TL16C552AM
DUAL ASYNCHRONOUS COMMUNICATIONS ELEMENT
WITH FIFO
SLLS189D – NOVEMBER 1994 – REVISED JANUARY 1999
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
Trigger
Interrupt
(FCR6, 7=0, 0)
Active
Parity
Data Bits 5–8
Stop
Start
Active
tpd7
td9
SIN
Sample
CLK
IOR
(RD LSR)
LSI
Interrupt
IOR
(RD RBR)
(FIFO at or above
trigger level)
(FIFO below
trigger level)
tpd7
50%
50%
50%
50%
50%
50%
Figure 10. Receiver FIFO First Byte (Sets RDR) Waveforms
Active
Active
Top Byte of FIFO
IOR
(RD LSR)
CLK
Sample
SIN
Active
Time Out or
Trigger Level
Interrupt
LSI
Interrupt
IOR
(RD RBR)
(FIFO at or above
trigger level)
(FIFO below
trigger level)
Previous Byte
Read From FIFO
Stop
td9
(see Note A)
tpd7
td9
tpd7
50%
50%
50%
50%
50%
50%
50%
NOTE A: This is the reading of the last byte in the FIFO.
Figure 11. Receiver FIFO After First Byte (After RDR Set) Waveforms
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