Hermstedt Leonardo USB¶

• Table of contents
• Hermstedt Leonardo USB
  • Hardware
    • Leonardo USB 2/1
    • Leonardo USB 4/1
  • USB
    • Leonardo USB 2/1
    • Leonardo USB 4/1

The Leonardo USB is a ISDN Terminal Adapter made by Hermstedt that was primarily designed for Apple computers.

Multiple variants exist

• USB 2/1: two 64 kbit/s B-channels, one data/fax modem for analog communications
• USB 4/1: four 64 kbit/s B-channels, one data/fax modem for analog communications
• USB 4/4: four 64 kbit/s B-channels and four data/fax modem for analog communications

Hardware¶

Leonardo USB 2/1¶

What we can see here:

• Motorola MC68SEC000 (Microprocessor) MC68SEC000.pdf
• Altera MAX EPM3128A (FPGA) MAX3000A.pdf
• Siemens PSB 2115 F V1.1 IPAC (ISDN Terminal Adapter Circuit) PSB2115.pdf
• UMEC UT20795-05TS (ISDN S-Interface Transformer)
• Netchip NET2890 (USB Controller) NET2890rev2b.pdf
• 4x Hynix HY628100A (SRAM) HY628100A.pdf
• Speaker

ISDN module (ISARMOD)

What we can see here:

• Infineon PSB 7115 F V2.1 ISAR (ISDN Data Access Controller) PSB7115.pdf
• 2x SEC KM68V1002CT (SRAM) KM68V1002C.pdf

Leonardo USB 4/1¶

The only difference between the PCBs for the USB 2/1 variant are the added components for the second ISDN BRI interface:

• 1x Siemens PSB 2115 F V1.1 IPAC (ISDN Terminal Adapter Circuit)
• 1x UMEC UT20795-05TS (ISDN S-Interface Transformer)

USB¶

Leonardo USB 2/1¶

usb 3-6.3.2: new full-speed USB device number 15 using xhci_hcd
usb 3-6.3.2: New USB device found, idVendor=118e, idProduct=0542, bcdDevice= 0.00
usb 3-6.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-6.3.2: Product: Leonardo USB
usb 3-6.3.2: Manufacturer: Hermstedt AG
usb 3-6.3.2: SerialNumber: 2000110911165076

Bus 003 Device 015: ID 118e:0542 Hermstedt AG Leonardo USB
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol       255 
  bMaxPacketSize0         8
  idVendor           0x118e 
  idProduct          0x0542 
  bcdDevice            0.00
  iManufacturer           1 Hermstedt AG
  iProduct                2 Leonardo USB
  iSerial                 3 2000110911165076
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0027
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 CAPI Configuration
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              240mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              5 CAPI Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)

Leonardo USB 4/1¶

usb 3-6.3.2: new full-speed USB device number 16 using xhci_hcd
usb 3-6.3.2: New USB device found, idVendor=118e, idProduct=0542, bcdDevice= 0.01
usb 3-6.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-6.3.2: Product: Leonardo USB
usb 3-6.3.2: Manufacturer: Hermstedt AG
usb 3-6.3.2: SerialNumber: 2000092515572161

Bus 003 Device 016: ID 118e:0542 Hermstedt AG Leonardo USB
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol       255 
  bMaxPacketSize0         8
  idVendor           0x118e 
  idProduct          0x0542 
  bcdDevice            0.01
  iManufacturer           1 Hermstedt AG
  iProduct                2 Leonardo USB
  iSerial                 3 2000092515572161
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0027
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 CAPI Configuration
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              240mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           3
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              5 CAPI Interface
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
Device Status:     0x0000
  (Bus Powered)