LC786800E Datasheet, PDF (3/26 Pages) Sanyo Semicon Device – Compressed Audio signal Processor IC with USB host controller

LC786800E
<Audio output processing block>
• Analog Audio data output (One channel by stereo)
Eight-fold over-sampling digital filter (24bit)
Secondary LPF for audio output
• Electronic Volume/Fader
Output channel : Left Front (LF)/Left Rear (LR), Right Front (RF)/Right Rear (RR)
Output Range : 0dB to -90dB, -∞
0dB to -32dB : Analog control, 0.25dB step
-32dB to -70dB : Analog control, 1.0dB step
-70dB to -90dB : Digital attenuator control
Decrease the noise at the volume change timing by the digital and analog composite control.
Individual volume control for LF, LR, RF and RR output is available.
• Digital Audio data output (One channel by stereo)
Four lines interface, Format: IIS, MSB first right justified, etc.
[External interface functions]
<USB host control block>
• Open Host Controller Interface 1.0a
• Universal Serial Bus Specification 1.1
Supports up to Full speed (12MHz)for USB2.0
Only detection at the device insertion is available for Low speed specification.
• Supports four kinds of transfer type (Control/Bulk/Interrupt/Isochronous)
• Two USB ports
<SD memory card host control block>
• Multimedia Card Specification v2.11
• Secure Digital Memory Card Physical Layer Specification v0.96
* Individual contract is necessary to use SD memory card controller. For detail, please contact to us.
[Internal Microcontroller functions]
<Sequencer control>
• USB, SD memory card playback control
USB/SD files analysis, etc.
• Audio playback control
Various digital audio filter control, Electronic volume control, etc.
<Communication control between main controller>
• Communication format: SIO
<Peripheral interface block>
• GPIO port
37 ports maximum (Shared with other functions. Several pins are 5V tolerant.)
• External interrupt pins 4 pins maximum (Shared with other functions.)
• Serial interface
SIO
clock synchronized full duplex (3 lines) 3 channels
UART
full duplex
2 channels
IIC
master function
1 channel
<Program memory block>
• Flash memory
Program version up from the external media (USB/CDROM*) or main controller is available.
* The update of program from CDROM will only be available if CD system is used with this IC.
<Others>
• Watch Dog Timer
Notify to outside from the pin or reset internally.
• Power management
2 kinds of sleep mode
(1) Only CPU core operates at slow clock and clocks for other blocks are stopping.
(2) All clocks are stopping.
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