SAA7715 Datasheet, PDF (15/36 Pages) NXP Semiconductors – Digital Signal Processor

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A
A
A
A
A
S ^{0 011110 0C}
ADDR H
C
ADDR L
C
DATA 1
C
DATA ...
C
DATA 4
K
K
K
K
K
address
R/W
auto increment if repeated n-groups of 2, 3 or 4 bytes
S = START condition.
P = STOP condition.
ACK = acknowledge from SAA7715.
ADDR H and ADDR L = address DSP register.
DATA 1 to DATA 4 = 2, 3 or 4 bytes data word.
Fig.5 Master transmitter writes to the SAA7715 registers.
A
CP
K
MGU331
A
S ^{0 011110 0C}
K
ADDR H
A
C
K
ADDR L
A
C
K
S
r
0
0
1
1
1
1
0
1
A
C
K
DATA 1
A
C
K
DATA ...
A
C
K
DATA 4
address
R/W
auto increment if repeated n-groups of 2, 3 or 4 bytes
R/W
S = START condition.
Sr = repeated START condition.
P = STOP condition.
ACK = acknowledge from SAA7715 (SDA LOW).
R = repeat n-times the 2, 3 or 4 bytes data group.
NA = Negative Acknowledge master (SDA HIGH).
ADDR H and ADDR L = address DSP register.
DATA 1 to DATA 4 = 2, 3 or 4 bytes data word.
Fig.6 Master transmitter reads from the SAA7715 registers.
A
C
K
R
N
A
P
MGU330