adau1442 Analog Devices, Inc., adau1442 Datasheet - Page 26

• Manufacturer Part Number: adau1442
• Description: Sigmadsp Digital Audio Processor With Flexible Audio Routing Matrix
• Manufacturer: Analog Devices, Inc.

(CONTINUED)
(CONTINUED)
(CONTINUED)
(CONTINUED)
START BY
MASTER
SCL
SDA
SCL
SDA
SCL
SDA
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS AN N-WORD WRITE, WHERE EACH WORD HAS TWO BYTES. (OTHER WORD LENGTHS ARE POSSIBLE, RANGING FROM ONE TO FIVE BYTES.)
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS A ONE-WORD WRITE, WHERE EACH WORD HAS N BYTES.
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS AN N-WORD WRITE, WHERE EACH WORD HAS TWO BYTES. (OTHER WORD LENGTHS ARE POSSIBLE, RANGING FROM ONE TO FIVE BYTES.)
S
S
S
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS A ONE-WORD WRITE, WHERE EACH WORD HAS N BYTES.
S
ADDRESS,
ADDRESS,
CHIP ADDRESS,
CHIP ADDRESS,
R/W = 0
R/W = 0
CHIP
CHIP
0
R/W = 0
R/W = 0
1
AS
AS
SUBADDRESS,
SUBADDRESS,
AS
1
AS
HIGH
HIGH
SUBADDRESS BYTE 2
CHIP ADDRESS BYTE
READ DATA BYTE 1
SUBADDRESS,
SUBADDRESS,
1
HIGH
FRAME 1
FRAME 3
FRAME 5
HIGH
AS
AS
0
SUBADDRESS,
SUBADDRESS,
AS
0
LOW
LOW
SUBADDRESS,
AS
ADR
SEL
LOW
Figure 15. Single-Word I
Figure 17. Single-Word I
Figure 16. Burst Mode I
AS
AS
Figure 18. Burst Mode I
SUBADDRESS,
DATA-WORD 1, DATA-WORD 1, DATA-WORD 2, DATA-WORD 2,
R/W
ADAU144x
LOW
BYTE 1
S
ADAU144x START BY
ACK BY
Figure 14. I
AS
MASTER
ACK BY
ACK BY REPEATED
Rev. PrA | Page 26 of 92
ADDRESS,
R/W = 1
S
CHIP
AS
CHIP ADDRESS,
AS
2
MASTER
BYTE 2
C Read Clocking
R/W = 1
AS
2
2
2
2
C Write Sequence
C Read Sequence
C Write Sequence
C Read Sequence
BYTE 1
AS
DATA-WORD 1,
DATA
BYTE 1
AS
0
BYTE 1
SUBADDRESS BYTE 1
READ DATA BYTE 2
BYTE 1
DATA
AS
1
AM
AS
FRAME 6
FRAME 2
DATA-WORD 1,
CHIP ADDRESS BYTE
BYTE 2
BYTE 2
BYTE 2
1
AM
DATA
FRAME 4
BYTE 2
1
AS
AM
DATA
AS
...
...
0
DATA-WORD N, DATA-WORD N,
DATA-WORD N, DATA-WORD N,
AM
...
BYTE 1
BYTE 1
0
ADAU144x
MASTER
...
ACK BY
ACK BY
BYTE N
DATA
AM
AS
ADR
SEL
BYTE N
DATA
BYTE 2
BYTE 2
R/W
STOP BY
MASTER
ADAU144x
AS
ACK BY
AM
AS
AM
P
P
P
P