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10ms max 10ms max USB_DETACH 10ms max No max USB_WAKE_UP Port_Imbedance USB_DPUSB_DN USB_PULL_UP Disconnected Figure 11: USB_DETACH and USB_WAKE_UP Signal 4.2.6 USB Driver A USB Bluetooth device driver is required to provide a software interface between WT12 and Bluetooth software running on the host computer. Suitable drivers are available from www.bluegiga.com/techforum/. 4.2.7 USB 1.1 Compliance WT12 is qualified to the USB specification v1.1, details of which are available from http://www.usb.org. The specification contains valuable information on aspects such as PCB track impedance, supply inrush current and product labeling. Although WT12 meets the USB specification, Bluegiga Technologies cannot guarantee that an application circuit designed around the module is USB compliant. The choice of application circuit, component choice and PCB layout all affect USB signal quality and electrical characteristics. The information in this document is intended as a guide and should be read in association with the USB specification, with particular attention being given to Chapter 7. Independent USB qualification must be sought before an application is deemed USB compliant and can bear the USB logo. Such qualification can be obtained from a USB plug fest or from an independent USB test house. Terminals USB_D+ and USB_D- adhere to the USB specification 2.0 (Chapter 7) electrical requirements. 4.2.8 USB 2.0 Compatibility WT12 is compatible with USB v2.0 host controllers; under these circumstances the two ends agree the mutually acceptable rate of 12Mbits/s according to the USB v2.0 specification. 25
4.3 SPI Interface The synchronous serial port interface (SPI) is for interfacing with other digital devices. The SPI port can be used for system debugging. It can also be used for programming the Flash memory. SPI interface is connected using the MOSI, MISO, CSB and CLK pins. 26
Page 1 and 2: WT12 Data Sheet V e r s i o n 2 . 3
Page 3 and 4: Contents: 1. Block Diagram and Desc
Page 5 and 6: TERMS & ABBREVIATIONS Term or Abbre
Page 7 and 8: 1. BLOCK DIAGRAM AND DESCRIPTIONS F
Page 9 and 10: Since the details of some methods a
Page 11 and 12: Radio characteristics and general s
Page 13 and 14: 6. Measured at F0= 2441MHz. 7. Up t
Page 15 and 16: 2.2 Radio Characteristics - Enhance
Page 17 and 18: 3. WT12 PIN DESCRIPTION WT12 31 30
Page 19 and 20: CMOS input with weak internal pull-
Page 21 and 22: has to be connected to UART_RX. UAR
Page 23 and 24: 4.2 USB Interface WT12 USB devices
Page 25: USB_D+ WT12 USB_D- USB_ON VBUS Volt
Page 29 and 30: PCM_OUT WT12 PCM_IN PCM_CLK Up to 2
Page 31 and 32: PCM_SYNC PCM_CLK PCM_OUT 1 2 3 4 5
Page 33 and 34: Name Bit position Description - 0 S
Page 35 and 36: 6. SOFTWARE STACKS WT12 is supplied
Page 37 and 38: The firmware has been written again
Page 39 and 40: 6.3 RFCOMM Stack RFCOMM SDP L2CAP H
Page 41 and 42: main WRAP THOR firmware. The user i
Page 43 and 44: 7. ENHANCED DATA RATE EDR has been
Page 45 and 46: 8. LAYOUT AND SOLDERING CONSIDERATI
Page 47 and 48: • Routing should be done in the i
Page 49 and 50: Figure 30: WT12 foot print and dime
Page 51 and 52: Figure 33: Tape information 50
Page 53 and 54: 11.2 FCC Federal Communications Com
Page 55 and 56: 12. ROHS STATEMENT WITH A LIST OF B

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