LC89057W-VF4A-E Datasheet, PDF (10/59 Pages) Sanyo Semicon Device – Digital Audio Interface Transceiver

LC89057W-VF4A-E
9. Initial System Settings
9.1 System Reset (XMODE)
• _{The system operates correctly when XMODE is set to "H" after 3.0V or higher supply voltage is applied.}
When XMODE is set to "L" after power is turned on, the system is reset.
• _{When setting chip address, demodulation function master or slave, and modulation function or general-purpose I/O}
____________
__________
______
function, connect a 10kΩ pull-down or pull-up resistor to EMPHA/UO/CO, AUDIO/VO, CKST/PB, and INT pins.
____________
__________
______
• _{If EMPHA/UO/CO, AUDIO/VO, CKST/PB, and INT are not pulled up or down, their pin state is unstable at the time}
of input. Consequently proper setting cannot be realized. For these pins, pull-up or pull-down resistor must be
connected.
Table 9.1: Pin Names and Settings
Setting
Chip address
Demodulation function master or slave
Modulation function or general-purpose I/O function
Pins
________
EMPHA/UO/CO, AUDIO/VO
_______
CKST/PB
____
INT
Normal system operation range
3.0V ^3.3V
Setting completed
DVDD
XMODE
Set pin state
Undefined
Setting input
state
Output state
Setting input
state
Output state
min. 200μs
Figure 9.1 Setting Timing Chart of Function Setting Input Pins
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