| Manufacturer | Part # | Datasheet | Description |

Sony Corporation
|
CXA1644P |
222Kb/11P |
ECHO EFFECT GENERATOR |

Silan Microelectronics ...
|
SC5399 |
151Kb/7P |
ECHO SOUND EFFECT PROCESSOR |

Holtek Semiconductor In...
|
HT8955A |
589Kb/7P |
Voice Echo |

SamHop Microelectronics...
|
SM7181 |
48Kb/8P |
ECHO |
| SM7183 |
56Kb/12P |
ECHO |

Mitsubishi Electric Sem...
|
M50195P |
476Kb/8P |
DIGITAL ECHO |

Holtek Semiconductor In...
|
HT8970 |
100Kb/9P |
Voice Echo |

OKI electronic componet...
|
MSM7603 |
149Kb/20P |
Echo Canceler |

Holtek Semiconductor In...
|
HT8970 |
116Kb/11P |
Voice Echo |

List of Unclassifed Man...
|
CD2399GP |
482Kb/5P |
Echo Processor |

OKI electronic componet...
|
MSM7620 |
225Kb/28P |
Echo Canceler |

Holtek Semiconductor In...
|
HT8972 |
139Kb/13P |
Voice Echo |

OKI electronic componet...
|
MSM7602 |
238Kb/29P |
Echo Canceler |

List of Unclassifed Man...
|
BL0306 |
32Kb/2P |
Digital echo |

OKI electronic componet...
|
ML7021 |
244Kb/24P |
Echo Canceler |

Holtek Semiconductor In...
|
HT45F2020 |
6Mb/85P |
Sound Effect Generator Flash MCU |

List of Unclassifed Man...
|
TP5299 |
74Kb/11P |
ECHO PROCESSOR IC |

Princeton Technology Co...
|
PT2399 |
320Kb/9P |
Echo Processor IC |

Cirrus Logic
|
CS6403 |
761Kb/54P |
Echo-Cancelling Codec |

Princeton Technology Co...
|
PT2398 |
246Kb/5P |
Echo/Surround Processor |