adv7310 Analog Devices, Inc., adv7310 Datasheet - Page 17

• Manufacturer Part Number: adv7310
• Description: Multiformat 216 Mhz Video Encoder With Six Nsv 12-bit Dacs
• Manufacturer: Analog Devices, Inc.

REGISTER ACCESSES
The MPU can write to or read from all of the registers of the
ADV7310/ADV7311 except the subaddress registers, which are
write only registers. The subaddress register determines which
register the next read or write operation accesses. All communi-
cations with the part through the bus start with an access to the
subaddress register. A read/write operation is then performed
from/to the target address, which increments to the next address
until a stop command is performed on the bus.
REV. A
SEQUENCE
SEQUENCE
WRITE
READ
S SLAVE ADDR A(S)
S SLAVE ADDR A(S)
S = START BIT
P = STOP BIT
LSB = 0
A(S) = ACKNOWLEDGE BY SLAVE
A(M) = ACKNOWLEDGE BY MASTER
SUBADDR
SUBADDR
Figure 20. Read and Write Sequence
A(S)
A(S) S SLAVE ADDR
DATA
–17–
LSB = 1
Register Programming
The following tables describe the functionality of each register.
All registers can be read from as well as written to, unless other-
wise stated.
Subaddress Register (SR7–SR0)
The communications register is an 8-bit write only register. After
the part has been accessed over the bus and a read/write opera-
tion is selected, the subaddress is set up. The subaddress register
determines to/from which register the operation takes place.
A(S)
A(S) = NO-ACKNOWLEDGE BY SLAVE
A(M) = NO-ACKNOWLEDGE BY MASTER
A(S)
DATA
DATA
A(M)
A(S) P
ADV7310/ADV7311
DATA
A(M)
P