WT11i-E DATA SHEET Monday, 13 February 2012 Version 1.
Copyright © 2000-2012 Bluegiga Technologies All rights reserved. Bluegiga Technologies assumes no responsibility for any errors which may appear in this manual. Furthermore, Bluegiga Technologies reserves the right to alter the hardware, software, and/or specifications detailed here at any time without notice and does not make any commitment to update the information contained here. Bluegiga’s products are not authorized for use as critical components in life support devices or systems.
VERSION HISTORY Version Comment 1.04 Typo corrections 1.03 Page 33: Reset is active high 1.02 Package drawings added 1.01 Ordering information corrected 1.
TABLE OF CONTENTS 1 Ordering Information..................................................................................................................................... 7 2 Pinout and Terminal Description .................................................................................................................. 8 3 Electrical Characteristics ............................................................................................................................ 11 3.
PIO Defaults ................................................................................................................................. 32 10.1 11 Reset ....................................................................................................................................................... 33 11.1 12 Pin States on Reset ..................................................................................................................... 33 Certifications .............................
WT11i Bluetooth® Module DESCRIPTION WT11i is a fully integrated Bluetooth 2.1 + EDR, class 1 module combining antenna, Bluetooth radio and an on-board Bluetooth stack. The WT11i module utilizes Bluegiga's latest generation RF technology and provides better performance than its predecessor WT11. For OEM's WT11i offers trouble free Bluetooth integration for applications where the best performance is needed and it’s a drop-in performance upgrade for designs where WT11 is already used.
1 Ordering Information WT11i-E-HCI Fimrware HCI21= AI3 = AI4 = C = HCI firmware (Bluetooth 2.1 + EDR) iWRAP 3.0.0 iWRAP 4.0.0 Custom* HW version E = u.
2 Pinout and Terminal Description WT11i GND 28 AIO 27 3 PIO2 UART_TX 26 4 PIO3 PIO5 25 5 UART_RTS# SPI_MOSI 24 6 UART_RX SPI_MISO 23 7 PCM_OUT SPI_CLK 22 8 USB+ SPI_CS# 21 9 USB- PIO4 20 10 UART_CTS# PIO7 19 11 PCM_IN PIO6 18 12 PCM_CLK RESET 17 13 PCM_SYNC VDD 16 14 GND GND 15 1 GND 2 VDD_PA Figure 1: WT11i connection diagram PIN NUMBER RESET 17 PAD TYPE Input, internal 220kohm Active high reset.
PIO PORT PIN PAD TYPE NUMBER DESCRIPTION PIO[2] 3 Bi-directional, programmamble strength internal pull-down/pull-up Programmamble input/output line PIO[3] 4 Bi-directional, programmamble strength internal pull-down/pull-up Programmamble input/output line PIO[4] 20 Bi-directional, programmamble strength internal pull-down/pull-up Programmamble input/output line PIO[5] 25 Bi-directional, programmamble strength internal pull-down/pull-up Programmamble input/output line PIO[6] 18 Bi-directi
USB Interfaces PIN NUMBER PAD TYPE USB+ 8 Bidirectional USB- 9 Bidirectional DESCRIPTION USB data plus with selectable internal 1.
3 Electrical Characteristics 3.1 Absolute Maximum Ratings Rating Storage Temperature Min -40 Max 85 Unit °C VDD_PA, VDD -0.4 3.6 V VSS-0.4 VDD+0.4 V Max 85 3.6 Unit °C V Other Terminal Voltages Table 7: Absolute Maximum Ratings 3.2 Recommended Operating Conditions Rating Operating Temperature Range *) VDD_PA, VDD Min -40 3.0 *) VDD_PA has an effect on the RF output power. Table 8: Recommended Operating Conditions 3.
3.4 PIO Current Sink and Source Capability Figure 2: WT11i PIO Current Drive Capability 3.
4 Physical Dimensions Figure 3: Physical dimensions (top view) m 2.6m 14.5mm 35.8mm 6.
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Figure 6: WT11i orientation in the reel Bluegiga Technologies Oy Page 15 of 40
5 Layout Guidelines Use good layout practices to avoid excessive noise coupling to supply voltage traces or sensitive analog signal traces, such as analog audio signals. If using overlapping ground planes use stitching vias separated by max 3 mm to avoid emission from the edges of the PCB. Connect all the GND pins directly to a solid GND plane and make sure that there is a low impedance path for the return current following the signal and supply traces all the way from start to the end.
6 UART Interface This is a standard UART interface for communicating with other serial devices.WT11i UART interface provides a simple mechanism for communicating with other serial devices using the RS232 protocol. Four signals are used to implement the UART function. When WT11i is connected to another digital device, UART_RX and UART_TX transfer data between the two devices.
Equation 1: Data Rate Table 11: Standard Data Rates Bluegiga Technologies Oy Page 18 of 40
6.1 UART Bypass Figure 10: UART Bypass Architecture 6.2 UART Configuration While Reset is Active The UART interface for WT11i while the chip is being held in reset is tristate. This will allow the user to daisy chain devices onto the physical UART bus. The constraint on this method is that any devices connected to this bus must tristate when WT11i reset is de-asserted and the firmware begins to run. 6.
7 USB Interface This is a full speed (12Mbits/s) USB interface for communicating with other compatible digital devices. WT11i acts as a USB peripheral, responding to requests from a master host controller such as a PC. The USB interface is capable of driving a USB cable directly. No external USB transceiver is required. The device operates as a USB peripheral, responding to requests from a master host controller such as a PC. Both the OHCI and the UHCI standards are supported.
Figure 11: USB Connections for Self-Powered Mode The terminal marked USB_ON can be any free PIO pin. The PIO pin selected must be registered by setting PSKEY_USB_PIO_VBUS to the corresponding pin number. Identifier Value Function RS 0 to 10 (to be matched per design)** Impedance matching to USB cable Rvb1 22k 5% VBUS ON sense divider Rvb2 47k 5% VBUS ON sense divider Figure 12: USB Interface Component Values **) WT11i has internal 22 ohm series resistors at the USB lines. 7.
Figure 13: USB Connections for Bus-Powered Mode 7.6 USB Suspend Current All USB devices must permit the USB controller to place them in a USB suspend mode. While in USB Suspend, bus-powered devices must not draw more than 2.5mA from USB VBUS (self-powered devices may draw more than 2.5mA from their own supply). This current draw requirement prevents operation of the radio by bus-powered devices during USB Suspend.
Figure 14: USB_Detach and USB_Wake_Up Signals 7.8 USB Driver A USB Bluetooth device driver is required to provide a software interface between BlueCore4-External and Bluetooth software running on the host computer. Please, contact support@bluegiga.com for suitable drivers. 7.9 USB v2.0 Compliance and Compatibility Although WT11i meets the USB specification, CSR cannot guarantee that an application circuit designed around the module is USB compliant.
8 Serial Peripheral Interface (SPI) The SPI port can be used for system debugging. It can also be used for programming the Flash memory and setting the PSKEY configurations. WT11i uses 16-bit data and 16-bit address serial peripheral interface, where transactions may occur when the internal processor is running or is stopped. SPI interface is connected using the MOSI, MISO, CSB and CLK pins. Please, contact support@bluegiga.com for detailed information about the instruction cycle.
9 PCM Codec Interface PCM is a standard method used to digitize audio (particularly voice) for transmission over digital communication channels. Through its PCM interface, WT11i has hardware support for continual transmission and reception of PCM data, thus reducing processor overhead for wireless headset applications. WT11i offers a bidirectional digital audio interface that routes directly into the baseband layer of the on-chip firmware. It does not pass through the HCI protocol layer.
Figure 16: PCM Interface Slave 9.2 Long Frame Sync Long Frame Sync is the name given to a clocking format that controls the transfer of PCM data words or samples. In Long Frame Sync, the rising edge of PCM_SYNC indicates the start of the PCM word. When WT11i is configured as PCM master, generating PCM_SYNC and PCM_CLK, then PCM_SYNC is 8-bits long. When WT11i is configured as PCM Slave, PCM_SYNC may be from two consecutive falling edges of PCM_CLK to half the PCM_SYNC rate, i.e., 62.5s long.
Figure 18: Short Frame Sync (Shown with 16-bit Sample) As with Long Frame Sync, WT11i samples PCM_IN on the falling edge of PCM_CLK and transmits PCM_OUT on the rising edge. PCM_OUT may be configured to be high impedance on the falling edge of PCM_CLK in the LSB position or on the rising edge. 9.4 Multi-slot Operation More than one SCO connection over the PCM interface is supported using multiple slots. Up to three SCO connections can be carried over any of the first four slots.
Figure 20: GCI Interface The start of frame is indicated by the rising edge of PCM_SYNC and runs at 8kHz. With WT11i in Slave mode, the frequency of PCM_CLK can be up to 4.096MHz. 9.6 Slots and Sample Formats WT11i can receive and transmit on any selection of the first four slots following each sync pulse. Slot durations can be either 8 or 16 clock cycles. Durations of 8 clock cycles may only be used with 8-bit sample formats. Durations of 16 clocks may be used with 8-bit, 13-bit or 16-bit sample formats.
Figure 21: 16-bit Slot Length and Sample Formats 9.7 Additional Features WT11i has a mute facility that forces PCM_OUT to be 0. In master mode, PCM_SYNC may also be forced to 0 while keeping PCM_CLK running which some codecs use to control power down. 9.8 PCM_CLK and PCM_SYNC Generation WT11i has two methods of generating PCM_CLK and PCM_SYNC in master mode. The first is generating these signals by DDS from BlueCore4-External internal 4MHz clock.
Equation 2: PCM_CLK Frequency When Being Generated Using the Internal 48MHz Clock The frequency of PCM_SYNC relative to PCM_CLK can be set using Equation XXX: Equation 3: PCM_SYNC Frequency Relative to PCM_CLK CNT_RATE, CNT_LIMIT and SYNC_LIMIT are set using PSKEY_PCM_LOW_JITTER_CONFIG. As an example, to generate PCM_CLK at 512kHz with PCM_SYNC at 8kHz, set PSKEY_PCM_LOW_JITTER_CONFIG to 0x08080177. 9.
Name Bit position Description - 0 SLAVE MODE EN 1 SHORT SYNC EN 2 - 3 SIGN EXTENDED EN 4 LSB FIRST EN 5 Set to 0 0 selects Master mode with internal generation of PCM_CLK and PCM_SYNC. 1 selects Slave mode requiring externally generated PCM_CLK and PCM_SYNC. This should be set to 1 if 48M_PCM_CLK_GEN_EN (bit 11) is set. 0 selects long frame sync (rising edge indicates start of frame), 1 selects short frame sync (falling edge indicates start of frame).
10 I/O Parallel Ports Six lines of programmable bidirectional input/outputs (I/O) are provided. All the PIO lines are power from VDD. PIO lines can be configured through software to have either weak or strong pull-ups or pull-downs. All PIO lines are configured as inputs with weak pull-downs at reset. Any of the PIO lines can be configured as interrupt request lines or as wake-up lines from sleep modes. WT11i has a general purpose analogue interface pin AIO[1].
11 Reset WT11i may be reset from several sources: RESET pin, power on reset, a UART break character or via software configured watchdog timer. The RESET pin is an active high reset and is internally filtered using the internal low frequency clock oscillator. A reset will be performed between 1.5 and 4.0ms following RESETB being active. It is recommended that RESET be applied for a period greater than 5ms. The power on reset occurs when the VDD_CORE supply internally to the module falls below typically 1.
12 Certifications WT11i-E is compliant to the following specifications. At the time of writing this version the official approval for these specifications is still in the process. Immediately when Bluegiga has received the approval this disclaimer is removed and the new version of this document is published. 12.1 Bluetooth WT11i-E module is Bluetooth qualified and listed as a controller subsystem and it is Bluetooth compliant to the following profiles of the core spec version 2.1/2.1+EDR.
OEM Responsibilities to comply with FCC and Industry Canada Regulations The WT11i-E module has been certified for integration into products only by OEM integrators under the following conditions: The antenna(s) must be installed such that a minimum separation distance of 20cm is maintained between the radiator (antenna) and all persons at all times. The transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter.
12.2.1 FCC et IC Cet appareil est conforme à l’alinéa 15 des règles de la FCC. Deux conditions sont à respecter lors de son utilisation : (1) cet appareil ne doit pas créer d’interférence susceptible de causer un quelconque dommage et, (2) cet appareil doit accepter toute interférence, quelle qu’elle soit, y compris les interférences susceptibles d’entraîner un fonctionnement non requis.
L’antenne (ou les antennes) doit être installée de façon à maintenir à tout instant une distance minimum de 20cm entre la source de radiation (l’antenne) et toute personne physique. Le module transmetteur ne doit pas être installé ou utilisé en concomitance avec une autre antenne ou un autre transmetteur. Tant que ces deux conditions sont réunies, il n’est pas nécessaire de procéder à des tests supplémentaires sur le transmetteur.
Afin de se conformer aux limites de radiation imposées par la FCC et Industry Canada, l’antenne (ou les antennes) utilisée pour ce transmetteur doit être installée de telle sorte à maintenir une distance minimum de 20cm à tout instant entre la source de radiation (l’antenne) et les personnes physiques. En outre, cette antenne ne devra en aucun cas être installée ou utilisée en concomitance avec une autre antenne ou un autre transmetteur. 12.
Item 1 2 3 4 5 Manufacturer Pulse Linx Technologies Inc EAD Antenova Litecon Manufacturers part number W1030 ANT-2.4-CW-CT-SMA EA-79A B4844/B6090 CAR-ATR-187-001 Measure d Gain (dBi) 1 1.3 0.4 1.4 0.
13 Contact Information Sales: sales@bluegiga.com Technical support: support@bluegiga.com http://techforum.bluegiga.com Orders: orders@bluegiga.com WWW: www.bluegiga.com www.bluegiga.hk Head Office / Finland: Phone: +358-9-4355 060 Fax: +358-9-4355 0660 Sinikalliontie 5A 02630 ESPOO FINLAND Postal address / Finland: P.O. BOX 120 02631 ESPOO FINLAND Sales Office / USA: Phone: +1 770 291 2181 Fax: +1 770 291 2183 Bluegiga Technologies, Inc.
