TLC3544_07 Datasheet, PDF (23/42 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
operation cycle timing (continued)
Table 3. Operation Options
MODE
00
01
10
11
CS
1. Issue new Select/Read operation to
read data and start new conversion.
2. Reconfigure the device.
1. Read FIFO—Select Channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Select Channel—Start new
conversion (old data lost)
3. Configure device again.
1. Read FIFO—Start new conversion
with existing setting.
2. Configure device—New conversion
(old data lost)
1. Read FIFO—Start new conversion
with existing setting.
2. Start new conversion with the existing
setting.
3. Configure device—Start new
conversion with new setting.
CONVERSION IS INITIATED BY
FS
1. Issue new Select/Read operation to
read data and start new conversion.
2. Reconfigure the device.
1. Read FIFO—Select Channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Select Channel—Start new
conversion (old data lost)
3. Configure device again.
1. Read FIFO—Start new conversion
with existing setting.
2. Configure device—New conversion
(old data lost)
1. Read FIFO—Start new conversion
with existing setting
2. Start new conversion with the existing
setting.
3. Configure Device—Start new
conversion with new setting.
CSTART
1. Issue new CSTART to start next
conversion; old data lost.
2. Issue new Select/Read operation to
read data—Issue new CSTART to
start new conversion.
3. Reconfigure the device.
1. Read FIFO—Select channel—Start
new conversion. Channel must be
selected after FIFO READ.
2. Start new conversion (old data lost)
with existing setting.
3. Configure device again.
1. Read FIFO—Arm Period—Start new
conversion with existing setting
2. Configure device—Arm Period—New
conversion (old data lost)
1. Read FIFO—Arm Period—Start new
Conversion with existing setting
2. Start new conversion with existing
setting. (old data lost)
3. Configure device—Arm Period—New
conversion with new setting.
operation timing diagrams
The FIFO read and write CFR are nonconversion operations. The conversion operation performs one of four
types of conversion: mode 00, 01, 10, and 11
Write Cycle (WRITE CFR Command): Write cycle does not generate EOC or INT, nor does it carry out any
conversion.
12 34567
12 13 14 15 16
1
CS
FS
SDI
OR
INT
EOC
SDO
ÌÌÌÌÌÌID15 1D14 ID13 1D12 ID11 ID10 ID9
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ID4 ID3 ID2 ID1 ID0
ID15
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ^Hi-Z
ÌÌ ^Note:
Signal May Not Exist.
Don’t Care
Figure 9. Write Cycle, FS Initiates Operation
ÌÌÌÌ
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