TLC3574IDW Datasheet, PDF (26/49 Pages) Texas Instruments – 5-V ANALOG,3-/5-V DIGITAL, 14-/12-BIT, 200-KSPS, 4-/8-CHANNEL SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH 10-V INPUTS

TLC3574, TLC3578, TLC2574, TLC2578
5ĆV ANALOG, 3Ć/5ĆV DIGITAL, 14Ć/12ĆBIT, 200ĆKSPS, 4Ć/8ĆCHANNEL
SERIAL ANALOGĆTOĆDIGITAL CONVERTERS WITH ±10ĆV INPUTS
SLAS262C − OCTOBER 2000 − REVISED MAY 2003
operation cycle timing (continued)
After the operation finished, the host has several choices. Table 3 summarizes of operation options.
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 nonconversion operation includes FIFO READ and WRITE CFR. Both do not perform a conversion. 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
OR
FS
SDI
ÌÌÌÌÌÌ _ID15
1D14
ID13 1D12
ID11
ID10
ID9
INT
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌ _{ID4 ID3 ID2 ID1 ID0}
ID15
EOC
SDO
Hi-Z
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ _{The dotted lines means signal may or may not exist.}
ÌÌÌ^{Don’t care}
Figure 8. Write Cycle, FS Initiates Operation
ÌÌÌÌÌÌÌÌ
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