MAX7430EUB-T Maxim Integrated Products, MAX7430EUB-T Datasheet - Page 13

• Manufacturer Part Number: MAX7430EUB-T
• Description: Active Filter
• Manufacturer: Maxim Integrated Products

Specifications of MAX7430EUB-T

• Number Of Channels: 2
• Supply Voltage (max): 5.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Supply Voltage (min): 4.5 V
• Package / Case: uMAX-10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The broadcast sequence writes data to the control regis-
ters of all the devices on the bus at the same time. Write
data with the LSB first. The following is the command
sequence and timing diagram (Figure 9) for the broad-
cast transaction. No address sequence is required. Use
the broadcast command when there is only one device
on the bus.
Executing a software reset serves the same function as
a power-on reset and is achieved by transmitting all
data bits (eight or more) for the MAX7428, sixteen or
Figure 7. Write Timing Diagram
Figure 5. Initialization Timing Diagram
Figure 6. Address Timing Diagram
Broadcast Command Sequence:
Read Command Sequence:
T101
T000
t
INTWAIT
t
T
Prompts ≥ 8 (MAX7428)
Prompts ≥ 16 (MAX7430)
Prompts ≥ 24 (MAX7432A)
Standard Definition Video Reconstruction
Data ≥ 8-bits (MAX7428)
Data ≥ 16-bits (MAX7430)
Data ≥ 24-bits (MAX7432A)
t
WAIT
______________________________________________________________________________________
t
t
0
T
t
T
t
WAIT
t
WAIT
t
0
t
0
t
0
t
t
1
1
t
1
LSB
t
t
1
0
t
0
T111
t
T111
0
LSB
t
t
1
INT
DATA: 1***000
t
0
ADDRESS: 0001
t
0
LSB
t
1
ADDRESS: 0001
more ones for the MAX7430, or 24 or more ones for the
MAX7432A to that device register.
The MAX7428 is ideally suited for filtering composite
video signals. Program the SYNCIO as an output when
processing composite video signals. In the rare occa-
sion that an external sync pulse is needed to process
the composite video, program the SYNCIO as an input.
t
0
Software Reset Command Sequence:
t
0
MSB
T000
T010
T001
t
0
MSB
t
0
t
1
Filters and Buffers
t
T
MSB
t
0
t
T
8 or more 1s (MAX7428)
16 or more 1s (MAX7430)
24 or more 1s (MAX7432A)
8 or more 1s (MAX7428)
16 or more 1s (MAX7430)
24 or more 1s (MAX7432A)
t
t
T
1
Composite Video Filtering
Address = 4-bits
t
1
t
1
t
OR
1
t
1
t
t
1
1
t
1
t
1
T111
T111
T111
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