ch7003b-v Chrontel, ch7003b-v Datasheet - Page 28

• Manufacturer Part Number: ch7003b-v
• Description: Ch7003 Digital Pc To Tv Encoder
• Manufacturer: Chrontel

CHRONTEL
.
If AutoInc = 1, then the address register will be incremented automatically and subsequent data bytes can be read
from successive registers, without providing a second RAB.
When the auto-increment mode is enabled (AutoInc is set to 1), the Address Register will continue incrementing for
each read cycle. When the content of the Address Register reaches 2A, it will wrap around and start from 00h again.
The auto increment sequence can be terminated by either a “STOP” or “RESTART” condition. The read operation
can be terminated with a “STOP” condition.Figure 25 shows an auto-increment read cycle terminated by a STOP
or RESTART condition.
28
SC
SD
SD
SC
Condition
Condition
Start
Start
Device ID
Device ID
1 - 7
Device ID
1 - 7
1 - 7
Serial Port
R/W*=0
R/W*
Serial Port
8
R/W*
acknowledge
R/W*=0
Serial Port
R/W*
R/W*=0
CH7003
8
acknowledge
8
acknowledge
ACK
CH7003
CH7003
9
ACK
ACK
9
Figure 25: Auto-increment Read Cycle
9
RAB n
1 - 8
Figure 24: Alternating Read Cycle
RAB 2
1 - 8
RAB 1
1 - 8
CH7003
ACK
acknowledge
9
acknowledge
CH7003
CH7003
ACK
Condition
ACK
9
Restart
9
10
Condition
Condition
Restart
Restart
10
Device ID
10
1 - 7
Device ID
Device ID
Serial Port
1 - 7
R/W*=1
R/W*
1 - 7
8
acknowledge
CH7003
Serial Port
ACK
R/W*
R/W*=1
Serial Port
R/W*
9
R/W*=1
8
8
acknowedge
acknowledge
Data n
CH7003
ACK
1 - 8
CH7003
201-0000-023 Rev. 4.2, 4/12/2002
ACK
9
9
acknowledge
Master
ACK
Data 2
1 - 8
9
Data 1
1 - 8
Master does
not acknowledge
Data
1 - 8
n+1
acknowledge
Master does
not acknowledge
just before Stop
condition
ACK
does not
ACK
9
Master
9
CH7003B
ACK
Condition
9
Condition
Restart
Stop
10
Condition
Stop