ADS8354 Datasheet, PDF (12/69 Pages) Texas Instruments – Simultaneous-Sampling, Analog-to-Digital Converters

ADS8354, ADS7854, ADS7254
SBAS556B – OCTOBER 2013 – REVISED AUGUST 2014
Figure 1 shows the details of the serial interface between the device and the digital host controller.
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CS
SCLK
SDO
t_{SU_CSCK}
1
2
t_{DV_CSDO}
CS
SCLK
SDI
1
2
B15 B14
12 13 14 15 16
t_{SU_CKDI}
t_{HT_CKDI}
B4 B3 B2 B1
Sample
N
CS
SCLK
SDO-
ADS8353/4
1
2
V
V
Sample
N+1
t_{PH_CS}
t_{PH_CK}
t_{PL_CK}
t_SCLK t_{D_CKCS}
N-
9
N- N- N- N- N-
8
7
6
5
4
N-
3
N- N-
2
1
N
t_{D_CKDO}
t_{DZ_CSDO}
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
SDO-
ADS7853/4
V
V
D7 D6 D5 D4 D3 D2 D1 D0 0
0
SDO-
ADS7253/4
V
V
D5 D4 D3 D2 D1 D0 0
0
0
0
Figure 1. Serial Interface Timing Diagram
12
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