CYWUSB6941 datasheet(7/14 Pages) CYPRESS

7 / 14 page

PRELIMINARY

CYWUSB6941

Document #: 38-16004 Rev. *A

Page 7 of 14

5.0

Radio Control Interface

The CYWUSB6941 radio control interface is the communication interface between the CYWUSB6941 transceiver and the

CYWUSB6942 WirelessUSB EX baseband. It consists of a data interface and a control interface for transmitting and receiving

data, and a serial interface for a control interface from the WirelessUSB baseband CYWUSB6941.

There are two subsections of the interface:

• RF data and control path

• Radio control interface (serial).

Nine signals are used in the RF data and control path, four in the serial radio control interface, and one system clock. All of the

signals are unidirectional. Direction is oriented to/from the CYWUSB6941 RF IC.

5.1

Radio / Baseband Interface Connections

Figure 5-1. CYWUSB6941 Radio/Baseband Interface Diagram

BTXD

BRXD

BRCLK

BTXEN

BRXEN

BPAEN

BSEN

BXTLEN

BnPW R

BDCLK

BnDEN

BMOSI

BMISO

BCLK13M

D ata Interface

C ontrol Interface

Serial Interface

Master C lock

WirelessU SB

R adio IC

C YWU SB 6941

WirelessU SB

B aseband

C YWU SB 6942

CYWUSB6941 Datasheet(PDF) 7 Page - Cypress Semiconductor