sm5308av Nippon Precision Circuits Inc, (NPC), sm5308av Datasheet - Page 15

• Manufacturer Part Number: sm5308av
• Description: 3-channel Video Buffer With Built-in Wideband Lpf
• Manufacturer: Nippon Precision Circuits Inc, (NPC)

(3) Output gain
(4) Disable mode select
(5) fc mode switching (1/2 cutoff frequency switching)
(6) Filter bypass mode
Register name: CONDITION1
Flag name: GS
Register name: CONDITION2
Flag name: PD
This flag enables/disables the analog block. When the analog block is disabled, the output pins are high
impedance.
Register name: CONDITION2
Flag name: HALF
This flag switches the cutoff frequency of CH-2 and CH-3 to divide the value set by the FCSET register into
halves. Note that the CH-1 cutoff frequency cannot be switched to 1/2. This mode is suitable for systems
where the sampling frequency varies due to Y, Cr, and Cb requirements, such as component signals.
Register name: CONDITION2
Flag name: BYPASS
This flag allows the internal lowpass filter in SM5308AV to be bypassed. The output gain can be switched,
even in filter bypass mode. The input type and output gain can all be set just as in filter mode. However, the
cutoff frequency and fc mode settings have no effect on the outputs.
Flag name
Flag name
Flag name
Flag name
BYPASS
HALF
GS
PD
H
H
H
H
L
L
L
L
(CH-2, CH-3 cutoff frequency is 1/2 that of CH-1)
(CH-1, CH-2, CH-3 cutoff frequency is identical)
(signals pass through lowpass filter)
(signals bypass lowpass filter)
Enable (normal operation)
Disable (no operation)
Filter bypass mode
Standard fc mode
Output gain
Half fc mode
Filter mode
fc mode
Mode
Filter
0dB
6dB
SM5308AV
Default
Default
Default
Default
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