cxa2571n Sony Electronics, cxa2571n Datasheet - Page 17

• Manufacturer Part Number: cxa2571n
• Description: Rf Matrix Amplifier
• Manufacturer: Sony Electronics

• Output Offset Shift
The RFDC, FE, TE and CE output DC voltages are level shifted to the digital VC voltage (DVC).
The reference voltage of this IC is the VC voltage, and only the output reference voltage changes.
The maximum output voltage of each output signal should be kept to the digital V
order to protect the DSP_IC.
• SW
This controls the laser (APC) on/off, active/sleep mode, and RW/ROM mode switching.
Switching is controlled by the voltage applied to the SW pin (Pin 12).
The VC buffer is kept active even in sleep mode.
In the function block, BGR and MODE_SW are always set to active mode.
Control voltage
V
VC or Hi-Z
GND
CC
DVC
AVC
12
40k
40k
AVC
Item
R (ofst)
40k
SW
40k
APC
OFF
ON
ON
VOFST
Active/Sleep
RW/ROM
APC_ON/OFF
Active/Sleep
Active
Active
Sleep
– 17 –
The AVC and DVC voltages are arithmetically amplified
and output as the VOFST voltage.
The VOFST voltage serves as the level shift reference
voltage, and is distributed to each system.
RW/ROM
ROM
RW
—
CC
voltage (DV
CC
) or less in
CXA2571N