Z87000 Просмотр технического описания (PDF) - Zilog

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Z87000

SPREAD SPECTRUM CONTROLLERS

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Z87000/Z87L00

Spread Spectrum Controllers

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OPERATION (Continued)

The various timing control registers reviewed in this para-

graph should be programmed differently for handset and

base station. If the same ROM code is used on base and

handset, the software can determine which station it runs

on by reading the HAND_BASE_SEL bit, which reflects

the state of the HBSW pin.

The following figure and table summarize the RF interface

control fields.

HBSW

DSP Core

Processor

TX_ENABLE

HAND_BASE_SEL

Sleep Mode

Control

RFEON_POLARITY

MOD_PWR_ON

Modulator

DEMOD_PWR_ON

DEMOD_PWR_OFF

HOP_ENABLE

SYLE_POLARITY

RFTX_PWR_ON

RFTX_PWR_OFF

RFTX_POLARITY

RFRX_PWR_ON

RFRX_PWR_OFF

RFRX_POLARITY

Demodulator

RFEON

SYLE

RFTX

TX

RFRX

RXON

RX,VREF

Field

RFEON_POLARITY

HOP_ENABLE

SYLE_POLARITY

TX_ENABLE

MOD_PWR_ON

RFRX_PWR_ON/OFF

DEMOD_PWR_ON/OFF

RFRX_POLARITY

RFTX_PWR_ON/OFF

RFTX_POLARITY

HAND_BASE_SEL

1-30

Figure 8. RF interface Control

Table 4. Timing and RF Interface Control Fields

Register

RX_PWR_CTRL

SSPSTATE

CONFIG1

SSPSTATE

MOD_PWR_CTRL

RFRX_PWR_CTRL

DEMOD_PWR_CTRL

RFRX_PWR_CTRL

RFTX_PWR_CTRL

RFTX_PWR_CTRL

SSP_STATUS

PRELIMINARY

Bank

2

3

3

3

2

0

2

0

2

2

3

Ext

EXT6

EXT2

EXT0

EXT2

EXT5

EXT7

EXT6

EXT7

EXT7

EXT7

EXT3

DS96WRL0501

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