Single-Chip Color Tv Signal Processor Function; Fig. 5.5.2 Staus Read Timing; Fig. 5.5.3 Byte Write Timing - Renesas 7200 Series User Manual

5.5 Example of I

5.5.3 Single-chip color TV signal processor function

(1) Status read
Status is read by sending the START condition, slave address "BB
the M52340SP, the status data is read out. After the status data is output, any acknowledge bit is
not generated, but the STOP condition is sent by the master. Then this read operation is completed.
Bus operation of
Bus operation of

Fig. 5.5.2 Staus read timing

(2) Byte write
Bytes are written by sending the START condition, slave address "BA
(1 byte), and the STOP condition from the master.
Bus operation of
master side:
SDA signal S
Bus operation of
slave side:

Fig. 5.5.3 Byte write timing

2 C-BUS control by software (M37220M3-XXXSP/FP)
S
T
A
Slave address (R)
R
master side:
T
SDA signal S
slave side:
S : START condition
P : STOP condition
ACK : Acknowledge bit
R : Read bit (1)
NACK : No acknowledge bit
S
T
Slave
A
address (W)
R
T
S : START condition
P : STOP condition
ACK : Acknowledge bit
W : Write bit (0)
7220 Group User's Manual
R
A
C
Data (n)
K
Sub-address (n)
W
A A
C C
K K
APPLICATION
." After ACK is generated from
16
N
A
S
C
T
K
O
P
P
," sub-address (1 byte), data
16
S
T
Data (n)
O
P
P
A
C
K
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