TL16PNP550A_08 Datasheet, PDF (16/40 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH PLUG-AND-PLAY (PnP) AND AUTOFLOW CONTROL

TL16PNP550A
ą
ASYNCHRONOUS COMMUNICATIONS ELEMENT
WITH PLUGĆANDĆPLAY (PnP) AND AUTOFLOW CONTROL
SLLS190B − MARCH 1995 − REVISED MARCH 1996
PARAMETER MEASUREMENT INFORMATION
SIN
Data Bits 5 −8
Stop
Sample Clock
Trigger Level
IRQx
(FCR6, 7 = 0, 0)
IRQx
Line Status
Interrupt (LSI)
IOR
(RD LSR)
td10
(see Note A)
50%
50%
50%
td11
50%
td11
Active
50%
IOR
(RD RBR)
Active
50%
NOTE A: For a time-out interrupt, td10 = 9 RCLKs.
Figure 10. Receive FIFO First Byte (Sets DR Bit) Waveforms
(FIFO at or above
trigger level)
(FIFO below
trigger level)
SIN
Sample Clock
Time-Out or IRQx
Trigger Level
Interrupt
IRQx
Line Status
Interrupt (LSI)
IOR
(RD LSR)
Stop
50%
td10
(see Note A)
td11
50%
Top Byte of FIFO
50%
td10
td11
50%
50%
(FIFO at or above
trigger level)
(FIFO below
trigger level)
IOR
(RD RBR)
Active 50%
50%
Active
Previous Byte
Read From FIFO
NOTE A: For a time-out interrupt, td10 = 9 RCLKs.
Figure 11. Receive FIFO Bytes Other Than the First Byte (DR Internal Bit Already Set) Waveforms
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