TLC3544_07 Datasheet, PDF (27/42 Pages) Texas Instruments – 5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS

TLC3544, TLC3548
5-V ANALOG, 3-/5-V DIGITAL, 14-BIT, 200-KSPS, 4-/8-CHANNELS SERIAL
ANALOG-TO-DIGITAL CONVERTERS WITH 0-5 V (PSEUDODIFFERENTIAL) INPUTS
SLAS266C – OCTOBER 2000 – REVISED MAY 2003
conversion operation (continued)
Configure
CS
Conversion
From CH0
Conversion
From CH3
Conversion
From CH0
Conversion
From CH3
FS
SDI
ÌÌ_*ÌÌ_** ÌÌÌÌÌÌ_** ÌÌÌÌ_** ÌÌ_*ÌÌ_* ÌÌ_*ÌÌ_* ÌÌÌÌ_* ÌÌÌÌ_* ÌÌÌÌ_* ÌÌÌÌ_* ÌÌÌÌ_** ÌÌ_*ÌÌ_* ÌÌ_*ÌÌ_* ÌÌ_**ÌÌÌÌ_*ÌÌ
INT
ÌÌÌ ^SDO
Hi-Z
1st Sweep
ÌÌ _{Don’t Care}
ÌÌ^{*** Command = Configure Write for Mode 10, FIFO}
Threshold = 1/2 Full, Sweep Sequence: 0–1–2–3
CH0
CH1
CH2
CH3
1st FIFO Read
2nd Sweep
Using Existing
Configuration
Read FIFO After FIFO Threshold Is Hit
CH0
2nd FIFO Read
** COMMAND = Select Any Channel
* COMMAND = Read FIFO
Figure 17. Mode 10, FS Initiates Operations
CS Tied ^Configure
to Low
Conversion
From CH0
Conversion
From CH2
Conversion
From CH0
Conversion
From CH2
FS
CSTASINRD_{ÌÌTTI ÌÌ*** ÌÌ** ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ*ÌÌÌÌ* ÌÌÌÌ* ÌÌÌÌ* ÌÌ** ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ*ÌÌ}
ÌÌ ^SDO
Hi-Z
1st Sweep
ÌÌ ^{Don’t Care}
*** Command = Configure Write for Mode 10, FIFO
Threshold = 1/2 Full, Sweep Sequence: 0–0–2–2
** COMMAND = Select Any Channel
* COMMAND = Read FIFO
CH0
CH0
CH2
Ì^CH2
1st FIFO Read
2nd Sweep
Using Existing
Configuration
CH0
2nd FIFO Read
Read FIFO After FIFO Threshold Is Hit, FS Initiates Select Period
Figure 18. Mode 10, CSTART Initiates Operations
Configure Conversion
From CH0
Conversion Conversion
From CH3 From CH0
Conversion
From CH3
Conversion
From CH0
CS
START 2nd Round SWEEP CONVERSION,
FS=High
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ _SDI ***
the DATA of the 1st Round Are Lost
**
**
**
**
**
**
**
**
*
*
*
*
**
INT
SDO
ÌÌÌÌÌÌÌDon’t Care
*** Command = Configure Write for Mode 11, FIFO
ÌÌ
CH0
CH1
CH2
CH3
READ the DATA of 2nd
Sweep From FIFO
Threshold = 1/2 Full, Sweep Sequence: 0–1–2–3
** COMMAND = Select Any Channel
START 2nd Sweep conversion immediately (NO FIFO READ) after the 1st SWEEP completed.
* COMMAND = Read FIFO
Figure 19. Mode 11, CS Initiates Operations
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