LC786800E

No.A2082-3/26

<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.