W7020 Datasheet, PDF (11/36 Pages) List of Unclassifed Manufacturers – Bluetooth Radio Module

Preliminary Data Sheet
September 2000
W7020 Bluetooth Radio Module
Interface Signal Description
Table 2. Data Interface: CMOS I/O Up to 1 Mbit/s
Pin No.
4
22
Pin Name
RX_DATA
TX_DATA
Function
Connects to baseband and is synchronized to the SYS_CLK signal.
TX data from baseband must be synchronized with TX_CLK signal.
Table 3. Digital Control Inputs: Strobe Signals to Control Various W7020 Features
Pin No.
9
5
3
33
32
24
21
Pin Name
POR_EXT
RX_ON
TX_ON
SYS_CLK_REQ
PX_ON
SYNT_ON
PHD_OFF
Function
Reset will occur on the positive edge of an external power-on-reset signal.
Logic high enables receiving of RX_DATA; low disables RX_DATA.
Logic high enables transmission of TX_DATA; low disables TX_DATA.
Logic high starts up SYS_CLK and TX_CLK outputs (if control register bit 2 set).
Logic high during synchronization at first data packet from master.
Logic high enables the VCO/PLL.
Logic high opens the VCO/PLL control loop.
Table 4. Digital Control Outputs: Output Clocking and Reset Control for the Baseband
Pin No.
2
34
31
30
Pin Name
TX_CLK
SYS_CLK
LPO_CLK
POR
Function
1 MHz transmit clock output, available if POR_EXT & SYS_CLK_REQ are high.
13 MHz reference clock output, available if POR_EXT & SYS_CLK_REQ are high.
3.2 kHz adjustable low-power oscillator clock, available after VCC applied.
Delayed reset signal (<30 ms) (refer to Power-On Reset and XO Start-Up section).
Table 5. Analog Inputs: Connect XTAL Off-Module or External Oscillator Signal (0.4 Vp-p to 1.0 Vp-p)
Pin No.
7
8
Pin Name
XO_P
XO_N
Function
Connect XTAL. Leave unconnected when using external clock.
Connect XTAL or external signal, ac-coupled.
Table 6. Serial Interface: Based on the Boundary-Scan Architecture, IEEE* 1149.1
Pin No.
27
26
25
29
Pin Name
SI_CDI
SI_CMS
SI_CLK
SI_CDO
Function
Control data input; transports serial data to the W7020.
Control mode select; determine transitions from one state to another with the CLK
positive edge.
Control clock; control timing of the serial interface.
Control data out; transports serial data from the W7020 to baseband.
* IEEE is a registered trademark of the Institute of Electrical and Electronic Engineers, Inc.
Lucent Technologies Inc.
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