TLC3574IDW Datasheet, PDF (27/49 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 timing diagrams (continued)
1 23 4 5 6 7
12 13 14 15 16
1
CS
FS = High
ÌÌÌÌÌÌ _SDI
ID15 1D14 ID13 1D12 ID11 ID10 ID9
INT
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ID4 ID3 ID2 ID1 ID0
ID15 ID14
OR
EOC
SDO
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ ^Hi-Z
ÌÌÌÌ
The dotted lines means signal may or may not exist.
ÌÌÌÌÌÌDon’t Care
Figure 9. Write Cycle, CS Initiates Operation, FS = 1
FIFO READ Operation: When the FIFO is used, the first command after INT is generated is assumed to be
the FIFO READ. The first FIFO content is output immediately before the command is decoded. If this command
is not FIFO READ, the output is terminated. Using more layers of FIFO reduces the time taken to read multiple
conversion results, because the read cycle does not generate an EOC or INT, nor does it make a data
conversion. Once the FIFO is read, the entire contents in FIFO must be read out. Otherwise, the remaining data
is lost.
1234567
12 13 14 15 16
1
SCLK
CS
FS = High
ÌÌÌÌÌÌ ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ _SDI
ID15 1D14 ID13 1D12
ID15 ID14
INT
OR
EOC
SDO
OD15 OD14 OD13 OD12 OD11 OD10 OD9
ÌÌÌÌÌÌ _{OD4 OD3 OD2}
Hi-Z
OD15 OD14
The dotted lines means signal may or may not exist.
OD[15:2] (for TLC3574/78) or OD[15:4](for TLC2574/78) is the FIFO content.
ÌÌÌÌ Don’t Care
Figure 10. FIFO Read Cycle, CS Initiates Operation, FS = 1
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