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

11

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

read cycle (read FIFO or read CFR) (continued)

FIFO read cycle

The first command in the active cycle after INT is generated, if the FIFO is used, is assumed as the FIFO read

command. The first FIFO content is output immediately before the command is decoded. If this command is

not a FIFO read, then the output is terminated but the first data in the FIFO is retained until a valid FIFO read

command is decoded. Use of more layers of the FIFO reduces the time taken to read multiple data. This is

because the read cycle does not generate EOC or INT nor does it carry out any conversion.

SCLK

CS

FS

SDI

INT

EOC

SDO

ID15

ID14

ID13

ID12

ID14

OD6

OD5

OD3

OD0

12

3

4

5

6

711

12

15

16

1

10

OD9

OD8

OD7

ID15

OD4

Command

FIFO Data

Figure 4. TLC1514/TLC1518 Continuous FIFO Read Cycle (FS = 1)

(controlled by SCLK, SCLK can stop between each 16 SCLKs)