PBL40215 Просмотр технического описания (PDF) - Ericsson

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PBL40215

RF Transceiver circuit for the Digital Enhanced Cordless Telecommunications (DECT) system

Ericsson  

PBL 402 15

Word B.

Description.

Word B has address W0 =1. It controls modes, functionality and configuration. Word B signals are only active when CE is enabled

or EN is active.

Word B Table.

Data address

D0

D1

D2

D3

D4

D5

Name

SYN_EN

Default

0

IF_EN

0

RX_EN

0

TX_EN

0

SHOLD_P

0

SHOLD_EN

0

D6

MOD_P

0

D7

MOD_EN

0

D8

MOD_SW

0

D9

GATE_P

0

D10

CPC0

0

D11

CPC1

0

D12 to D23

Description

1 = Synthesiser power on.

0 = Synthesiser power off.

1 = IF receiver enabled.

IF mixer + RSSI + Demodulator + Slave PLL

0 = IF receiver disabled.

1 = Receiver power on.

LNA + front end mixer

0 = Receiver power off.

1 = Transmit power on.

0 = Transmit power off.

1 = Slice hold pin SHOLD, active high.

0 = Slice hold pin SHOLD, active low.

1 = Slice hold enable.

0 = Slice hold disable.

Active level on the external SHOLD pin determined by SHOLD_P will

also enable slice hold.

1 = Modulation pin MOD, active high.

0 = Modulation pin MOD, active low.

1 = Enable modulation.

0 = Disable modulation.

Active level on the external MOD pin determined by MOD_P will

also enable modulation.

1 = Modulation controlled by the SHOLD pin.

0 = Modulation controlled by the MOD pin.

The effect is to multiplex between the MOD & SHOLD pins.

1 = TX gating pin, GATE active high.

0 = TX gating pin, GATE active low.

Charge pump operation control.

00 = Normal 01 = Force CP voltage down ( =VCO frequency up )

11 = Tri-state 10 = Force CP voltage up ( =VCO frequency down )

Reserved. These bits need not to be programmed.

12

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