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參數資料
| 型號： | LC75386NW |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PQFP64 |
| 封裝： | SQFP-64 |
| 文件頁數： | 10/24頁 |
| 文件大小： | 322K |
| 代理商： | LC75386NW |
Usage Notes
Data Transmission after Power Is First Applied
When power is first applied, the state of the internal analog switches will be undefined. Applications that use this IC
must include external circuits to provide muting until control data has been transferred to the IC.
After power is first applied, applications should send initial setup data to stabilize the bias levels in each of the IC
circuit blocks in a short time.
1. The time between initial setup mode and the first actual data settings
Applications should send the initial setup data as soon as VDD rises above 6 V.
After the LCOM and RCOM pins have stabilized at the Vref level, applications should send the first data settings.
2. Procedure for setting up initial setup mode
When D32 and D33 are set to 00, the IC’s internal initial setup switch is turned on and the IC goes to quick charge
mode. At this time the other data (D0 to D31 and D34 to D43) will also be set up for the left and right channels at the
same time. This means that applications can set up the states of the various blocks at the same time as specifying initial
setup mode.
3. Procedure for clearing initial setup mode
Initial setup mode is cleared by setting D32 and D33 to any value other than 00. In other words, any normal left or
right channel specification will turn the internal initial setup switch off and clear quick charge mode.
No.6170-18/24
LC75386NE-R, 75386NW
The time required for the capacitors connected to the LCOM
and RCOM pins to be charged to the Vref level
VREF
VDD
These operations
clear initial setup
mode
The 1/2 VDD level
VDD = 9 V (TYP)
VDD = 6 V
Initial setup
mode
First data for
the left channel
First data for
the right
channel
Data
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