MAX7469UTP Maxim Integrated, MAX7469UTP Datasheet - Page 10

• Manufacturer Part Number: MAX7469UTP
• Description: Video ICs
• Manufacturer: Maxim Integrated

HDTV Continuously Variable
Anti-Aliasing Filters
A master device initiates communication by issuing a
START condition, a high-to-low transition on SDA with SCL
high (Figure 2). The master terminates transmission by a
STOP condition (see the Acknowledge Bit (ACK) and Not-
Acknowledge Bit (NACK) section). A STOP condition is a
low-to-high transition on SDA while SCL is high (Figure 2).
The STOP condition frees the bus. If a repeated START
condition is generated instead of a STOP condition, the
bus remains active. When a STOP condition or incorrect
address is detected, the MAX7469/MAX7470 then ignore
all communication on the I
REPEATED START condition, minimizing digital noise
and feedthrough.
The MAX7469/MAX7470 recognize a STOP condition at
any point during transmission except when a STOP
Figure 2. START/STOP Conditions
Figure 3. Early STOP Conditions
10
SCL
SDA
_______________________________________________________________________________________
START and STOP Conditions
2
SDA
C bus until the next START or
SCL
STOP
LEGAL STOP CONDITION
Early STOP Conditions
S
START
S
r
SDA
condition occurs in the same high pulse as a START
condition (Figure 3). This condition is not a legal I
mat; at least one clock pulse must separate any START
and STOP conditions. The MAX7469/MAX7470 discard
any data received during a data transfer aborted by an
early STOP condition.
An Sr condition is used to indicate a change in direc-
tion of data flow (see the Read Cycle section). Sr can
also be used when the bus master is writing to several
I
the bus. The MAX7469/MAX7470 serial interface sup-
ports continuous write operations with (or without) an Sr
condition separating them.
SCL
2
C devices and does not want to relinquish control of
Repeated START (Sr) Conditions
P
ILLEGAL STOP CONDITION
START
ILLEGAL STOP
2
C for-