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GlobeSpan iTVC15

Last updated at Posted at 2025-07-22

ハードオフで見た事のないUSB MPEGモジュールを330円で入手しました。

このモジュールはチップにファンが貼ってあってよくわからなかったのですが、いろいろ調べてみるとGlobeSpan iTVC15が使われているようです。USBにはEZ-USB FX(CY7C64613)が使われています。

iTVC12というチップもあって、これを使った製品もあった模様です。

これらのチップはConexantのMPEGエンコーダーの祖先のようです。

GlobeSpanはiCompressionを2000年に買収してこのソリューションを手に入れたようです。

このモジュールにはビデオ出力もあるので、チップにはエンコーダーとデコーダが入っていて、CX23415相当なのかもしれません。

CX23416なモジュールはEZ-USB FX2でUSB2ですが、こちらはUSB1のようです。

PIXELA (1).png

ugen1.2: <PIXELA PIX-MPTV/U1> at usbus1, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (0mA)

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0110 
  bDeviceClass = 0x0000  <Probed by interface class>
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x06b8 
  idProduct = 0x100c 
  bcdDevice = 0x0002 
  iManufacturer = 0x0001  <PIXELA>
  iProduct = 0x0002  <PIX-MPTV/U1>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001 

 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x003c 
    bNumInterfaces = 0x0001 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x0040 
    bMaxPower = 0x0000 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0006 
      bInterfaceClass = 0x00ff  <Vendor specific>
      bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0084  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 2
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0086  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 3
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0002  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 4
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0004  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 5
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0006  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0040 
        bInterval = 0x0000 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

部品取りにしようかと思ったのですが、以前からCX23415には興味があったので、ちょっと調べてみたいと思います。

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