CH7007A-V ETC, CH7007A-V Datasheet - Page 26

• Manufacturer Part Number: CH7007A-V
• Description: DIGITAL PC TO TV ENCODER WITH MACROVISION
• Manufacturer: ETC

Transfer Protocols (continued)
.
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. Figure23 shows an auto-increment read cycle terminated by a STOP
or RESTART condition.
CHRONTEL
26
SC
SD
SD
SC
Condition
Condition
Start
Start
Device ID
Device ID
1 - 7
Device ID
1 - 7
1 - 7
R/W*
8
acknowledge
R/W*
R/W*
CH7007
I
8
2
C
I
acknowledge
8
2
acknowledge
ACK
C
CH7007
9
CH7007
ACK
ACK
9
Figure 23: Auto-increment Read Cycle
9
RAB n
1 - 8
Figure 22: Alternating Read Cycle
RAB 2
acknowledge
1 - 8
RAB 1
1 - 8
CH7007
ACK
acknowledge
9
acknowledge
CH7007
CH7007
ACK
Condition
ACK
Restart
9
9
10
Condition
Condition
Restart
Restart
10
Device ID
10
1 - 7
Device ID
Device ID
1 - 7
R/W*
1 - 7
I
8
2
C
acknowledge
CH7007
ACK
R/W*
9
R/W*
I
8
2
C
I
8
2
C
acknowledge
acknowledge
Data n
1 - 8
ACK
CH7007
CH7007
ACK
201-0000-002 Rev. 2.7, 08/23/2000
9
9
acknowledge
Master
ACK
Data 2
9
1 - 8
Data 1
1 - 8
Master does
not acknowledge
Data
1 - 8
n+1
Master does
not acknowledge
just before Stop
condition
acknowledge
ACK
does not
ACK
9
Master
9
CH7007A
ACK
Condition
9
Condition
Restart
Stop
10
Condition
Stop