YM2612 PDF Datasheet – 24 Pin, Sound Chip – Yamaha

This post describes for the Yamaha Chip.

The function of this semiconductor is Sound Chip.

The IC Package is DIP 24 Pin type.

The manufacturer of this part is Yamaha.

See the preview image and the PDF file for more information.

Image

YM2612 Datasheet Sound Chip

Description

The Yamaha YM2612 is a six-channel FM synthesizer, based on the Yamaha YM2203C. It was most notably used in Sega’s Mega Drive/Genesis video game console, as well as Fujitsu’s FM Towns computer series. As with the YM3438, it was used by Sega in various arcade game systems, including the Mega-Play, System 18, and System 32. Yamaha YM2612 (OPN) Sound Chip.

 

Pinout
YM2612 pinout pdf

Features

1. Six FM voices

2. Four operators per channel

3. Two interval timers

4. A sine-wave low frequency oscillator

5. Integrated stereo output digital-to-analog converter (most other contemporary Yamaha FM chips require a separate external D/A converter chip)

6. Per-channel programmable stereo sound (left, right, or both left and right resulting in centre)

7. For channel three, operator frequencies can be set independently, making dissonant harmonics possible. (Normally, they would have a simple relation like e.g. 2× or 3× relative to a common base frequency)

 

YM2612 PDF Datasheet

 

YM3438 PDF Datasheet

YM3438 pdf

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YM2612 24 Pin, Sound Chip – Yamaha

 

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RDA1846S PDF Datasheet – Single Chip Transceiver

This post explains for the transceiver.

The Part Number is RDA1846S.

The function of this semiconductor is Single Chip Transceiver.

The package is 5×5 mm 32 pin QFN.

Manufacturer: RDA Microelectronics

Preview images :

1 page
RDA1846S pdf datasheeet

Description

The RDA1846S has a powerful digital signal processor, which makes it have optimum voice quality, flexible function options, and robust performance under varying reception conditions.
The transceiver uses the CMOS process with a package size of 5x5mm. By virtue of its high integration, it requires the least external components and eliminates the complicated design of sensitive RF circuits on PCB.

The RDA1846 transceiver features very low solution cost and reduced complexity. As shown in Fig.3.1, to totally complete the translation from RF carrier to voice in the RX path and from voice to RF carrier in the TX path, the chip integrates nearly all the functional blocks including RF and base band analog blocks and digital signal processor. It requires only one micro controller and a few external components to realize a walkie-talkie.

Features

1. CMOS single-chip fully-integrated transceiver

2. Fully integrated frequency synthesizer and VCO

3. Digital auto frequency control (AFC)

4. Digital auto gain control (AGC)

5. Selectable pre/de-emphasis

6. Received signal strength indicator (RSSI)

7. DTMF and programmable in-band dual tone

8. Programmable in-band single tone transmitter

9. Auto RX/TX/SLEEP state switching

 

Applications:

1. Cellular handsets

2. Family radio services

3. Walkie Talkies

 

 

RDA1846S PDF Datasheet

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