TL16PNP550A Datasheet, PDF (16/40 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH PLUG-AND-PLAY (PnP) AND AUTOFLOW CONTROL

TL16PNP550A
ASYNCHRONOUS COMMUNICATIONS ELEMENT
WITH PLUG-AND-PLAY (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
16
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265