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GPD2846A Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part No. GPD2846A
Description  The GPD2846A is an integrated MP3 player IC with FM radio and Line In features with 2W mono amplifie, maximum output 3W
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Maker  ETC2 [List of Unclassifed Manufacturers]

 2 page
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right channel audio output.
LineInR + L LineIn left + right input.
8 IOA4
AD-key buttons.
9 IOA3
FMCLK if IOA3 pull-down resistor to ground, IOA3 will
output clock signal to the outside
Hanging FM radio IC. If IOA3 is vacant, FM radio IC will
Shall take their 32768Hz crystal.
10 IOA2
Mute Mute: Mute the external amplifier
11 DM DM
USB of DM.
12 DP DP
USB of DP.
13 IOA0
IO-key / LED (1) plug-in LED light: Output "1" represents
the lit LED.
(2) as well as IO-key1.
(3) as well as options, are used to define the key mode.
14 IOB1
SD_CLK: clock output T card / SD card.
SD_DET: detecting whether there is an SD card is
to read "0" on behalf of insertion. Please connect a 3.3KΩ
SD_CMD: T card / SD card command and response.
I2C_CLK: I2C the clock; the external EEPROM, and FM.
SD_DAT: data input T card / SD Card / output.
I2C_DAT: I2C of data; and external EEPROM FM.
AD-key function / operation
(5-1) AD-key a total of S1 ~ S8 total of eight buttons, including four buttons S1 ~ S4
MP3 playback mode (that is, U disk and play
Play SD card / T card) behavior by "IOA0 / LED pin whether the external pull-up
resistor" to decide.
Please V33REG pulled through the 22KΩ resistor.
We IOA0 / LED not hang Roption called "key mode a" hang Roption called "key
mode two."
Key definitions:
[Prev]: Previous, played on an MP3.
[Next]: Next, play the next MP3.
[P / P]: Play / Pause, play and pause between each switch between the two.
[V +]: Volume +, increase the volume.
[V ++]: Volume ++, long press will continue to increase the volume until you
release the button.
[V-]: Volume-, decrease the volume.
[V--]: Volume--, long press will continue to decrease the volume until you release
the button.
[Scan]: Scan ALL FM-band, the 87.5MHz ~ 108.0MHz automatic station search
once again, and the signal of the radio channels

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