LC89057W-VF4A-E SANYO [Sanyo Semicon Device], LC89057W-VF4A-E Datasheet - Page 11

• Manufacturer Part Number: LC89057W-VF4A-E
• Description: Digital Audio Interface Transceiver
• Manufacturer: SANYO [Sanyo Semicon Device]

9.2 Chip Address Settings (EMPHA/UO/CO,
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Command writing is enabled by making the chip address settings with EMPHA/UO/CO and
The LC89057W-VF4A-E comes with a function to set a unique chip address to allow the use of several LC89057W-
In chip address setting, connect a 10kΩ pull-down or pull-up resistor to EMPHA/UO/CO and
Chip addresses in the microcontroller interface are set with CAL and CAU provided as the first two bits on the LSB
The chip address setting is required even when only one LC89057W-VF4A-E is used in the system. If the chip address
VF4A-E on the same microcontroller interface bus.
setting, 4 kinds of chip addresses can be set at a maximum.
is not set, the chip address is undefined and the microcontroller cannot control the system. When the microcontroller is
not used, a chip address-setting pin is input open while XMODE is "L". Be sure to connect either a pull-down resistor
or a pull-up resistor to EMPHA/UO/CO and
side. CAL corresponds to the lower chip address and CAU to the higher chip address.
the chip addresses sent from the microcontroller.
AUDIO/VO
_____
Pull-down
Pull-down
Chip address setting
Demodulation function master
or slave setting
Modulation function or
General-purpose I/O port switch
Pull-up
Pull-up
LC89057W-VF4A-E
Setting Contents of Above Figure
Figure 9.2 Setting Example of Function Setting Input Pin
Table 9.2 Chip Address Settings (Register Connection)
EMPHA/UO/CO
AUDIO/VO
CKST/PB
INT
LC89057W-VF4A-E
AUDIO/VO.
____________
EMPHA/UO/CO
Pull-down
Pull-down
Pull-up
Pull-up
AUDIO/VO)
___________
pull-up 10kΩ
CAlL=CAU=0
Master
General-purpose I/O function
pull-down 10kΩ
CAU
0
0
1
1
Connect to
different circuits
CAL
AUDIO/VO identical to
____________
0
1
0
1
AUDIO/VO. By this
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No.7202-11/59