Datasheet

TLC1514, TLC1518
5-V, 10-BIT, 400 KSPS, 4/8 CHANNEL, LOW POWER,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTO POWER DOWN
SLAS252 – DECEMBER 1999
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
modes using the FIFO: modes 01, 10, 11 timing (continued)
t
sample
(3)
CS
CSTART
SDI
INT
SDO
From Channel 0
FS
(DSP)
Configure
Conversion
Read FIFO #1 #2 #3 #4
Top of FIFO
Read FIFO #1
From Channel 0
Conversion
Repeat
First FIFO Read
Second FIFO Read
Repeat
‡
‡
†
‡‡ ‡
t
sample
(i) >= MIN (t
sample
)
t
sample
(2)
t
sample
(4)
t
convert
From Channel 3
Conversion
Conversion
From Channel 3
t
convert
t
sample
(1)
†
Command = Configure write for mode 10 or 11, FIFO threshold = 1/2, sweep seq = 0–1–2–3.
‡
Command = Read FIFO
Figure 13. TLC1514/TLC1518 Mode 10/11 DSP Serial Interface (conversions triggered by CSTART)
CS
CSTART
SDI
INT
SDO
From Channel 0
t
convert
Configure
Conversion
Conversion
Read FIFO #1 #2 #3 #4
Top of FIFO
Read FIFO #1
Conversion
Conversion
Repeat
First FIFO Read
Second FIFO Read
Repeat
‡
‡
†
‡‡‡
t
Sample
(i) > = MIN(t
Sample
)
From Channel 3
From Channel 0
From Channel 3
t
sample
(1)
t
sample
(2)
t
sample
(3)
t
sample
(4)
t
convert
†
Command = Configure write for mode 10 or 11, FIFO threshold = 1/2, sweep seq = 0–1–2–3.
‡
Command = Read FIFO
Figure 14. TLC1514/TLC1518 Mode 10/11 µp Serial Interface (conversions triggered by CS)