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

tSCK

ST

tDS tDH

D

MSB

CK

Clock enabled

tCKW

tDS

tSW

Clock disabled

LSB

Figure 8. 3-wire timing diagram.

Word A.

Description.

Word A has the address W0 = 0. It permits IC operation and defines the synthesiser frequency.

IC operation is controlled by the EN pin and the CE flag. If EN is not active then CE must be enabled for the IC to become

and remain operational. If CE is disabled then the IC shuts down completely with only the status of ST and EN determining if the

control section takes power. All configurations are erased and must be re-programmed if the chip has been disabled.

CL determines if the internal flags or the hard wire control lines are used to control section power. The internal flags provide

more flexibility.

10

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