EM77950 datasheet(74/102 Pages) EMC

74 / 102 page

EM77950

BB Controller

•

Product Specification (V1.0) 10.09.2007

(This specification is subject to change without further notice)

RFINTE (0x99):

BB interrupt enable.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

CSDE

TX_AEE

RX_AFE

TX_

EMPTYE

RX_OFE

LINK_

DISE

LOCK_OU

LOCK_ INE

PRIE (0x80):

Peripherals enable control.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

SPIE

BBE

ADE

PWM1E

PWM0E

TCCE

FRCE

8.6.2 BB Control Example

ORG

0X0060

// TX_EMPTY INT address

RFINTF, TX_EMPTYF

// RF data send out, clear INT flag.

RETI

ORG

0X0100

START:

RFACR, RRST

// BB reset.

NOP

RFACR, RRST

PRIE, WME

// BB power enable.

MOV

A, #0x10

MOV

RFINTE, A

// BB INT.TX_EMPTY enable.

ENI

// enable all INT.

RF_TX_INITIAL:

WRITE

#SCR2, #8

// Reset TX_FIFO, RX mode.

WRITE

#BLR, #10

// Set bit rate.

WRITE

#PPR, #33

// Set package size to be fixed.

// Refresh bit mode 1. CRC disabled

WRITE

#PSR, #6

// Set package size to 6.

WRITE

#PRE_H, #0xDC

// Set preamble High byte value.

WRITE

#PRE_L, #0xA7

// Set preamble Low byte value.

RF_SEND_DATA:

WRITE

#TX_FIFO, #0x01

// Write first byte of package to

// TX_FIFO.

WRITE

#TX_FIFO, #0x02

WRITE

#TX_FIFO, #0x03

WRITE

#TX_FIFO, #0x04

WRITE

#TX_FIFO, #0x05

WRITE

#TX_FIFO, #0x06

// Write last byte of package to

// TX_FIFO.

READ

#TFR, 0x60

// Read TFR register data

WRITE

#IER, #16

// enable TX_EMPTY INT

WRITE

#SCR4, #0x03

// enable all INT.

WRITE

#SCR2, #1

// move from RX to TX mode.

EM77950 Datasheet(PDF) 74 Page - ELAN Microelectronics Corp

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