AD7767

Rev. 0 | Page 19 of 24

DAISY CHAIN MODE CONFIGURATION AND TIMING DIAGRAMS

SYNC/PD

MCLK

CS

SDI

SDI

SDO

SCLK

AD7767

(D)

SCLK

CS

SYNC/PD

SYNC/PD

MCLK

CS

SDI

SDO

SCLK

AD7767

(C)

SYNC/PD

MCLK

CS

SDI

SDO

SCLK

AD7767

(B)

SYNC/PD

MCLK

CS

SDI

SDO

DRDY

SCLK

AD7767

(A)

MCLK

Figure 36. AD7767 Daisy Chain Configuration with Four AD7767 Devices

MCLK

DRDY (A)

SCLK

SDO (A)

SDI (A) = SDO (B)

SDI (B) = SDO (C)

SDI (C) = SDO (D)

CS

1

8 × n

AD7767 (A)

AD7767 (B)

AD7767 (C)

AD7767 (D)

AD7767 (A)

AD7767 (B)

AD7767 (C)

AD7767 (D)

AD7767 (B)

AD7767 (C)

AD7767 (D)

AD7767 (C)

AD7767 (D)

AD7767 (D)

24 ×

24 ×

24 ×

24 ×

Figure 37. AD7767 Daisy Chain Timing Diagram (n = 1 for AD7767, n = 2 for AD7767-1, n = 4 for AD7767-2) Driving the AD7767

MCLK

SDO (A)

SDI (A) = SDO (B)

SCLK

DRDY (A)

CS

MSB (A)

LSB (A) MSB (B)

LSB (B)

LSB (C)

MSB (C)

MSB (B)

LSB (B) MSB (C)

LSB (C)

LSB (D)

MSB (D)

1

Figure 38. AD7767 Daisy Chain SDI Setup and Hold Timing