ML2724DH-T View Datasheet(PDF) - Micro Linear Corporation

Part Name

Description

MFG CO.

ML2724DH-T

2.4GHz Low-IF 1.5Mbps FSK Transceiver

Micro Linear Corporation 

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ML2724

RD0 - Register 0, Bit 3

Reference Divide: This bit sets the reference divider from the FREF pin to the reference input of the PLL

phase/frequency detector to either 9 or 18 (see Table 7).

RD0 REFERENCE FREF XTAL PLL REF

DIVISION

FREQ

FREQ

0

9

6.144MHz 682.67kHz

1

18

12.288MHz 682.67kHz

Table 7: Reference Frequency Select

AOUT - Register 0, Bit 4

Analog Output Mode: This bit changes the function of the AOUT pin between an analog data output to transmit power

control (see Table 8).

AOUT AOUT PIN FUNCTION

0

Transmit Power Control

1 Data Filter Analog Output

Table 8: AOUT Function Select

TXCW - Register 0, Bit 6

Transmit Continuous Wave: This bit produces a continuous wave (CW) transmitter output for product test when

RXON is low (see Table 9).

TXCW TRANSMIT MODULATION

0

FSK Modulation

1

CW – No Modulation

Table 9: Transmit Modulation Mode

TPC - Register 0, Bit 7

Transmit Power Control: When the AOUT bit is low, this bit controls the state of the open-drain output pin. Although

this bit can be changed at any time, the AOUT pin only changes state at the falling edge of RXON (see Table 10).

TPC TPC PIN STATE

0 High Impedance

1 Pulled to Ground

Table 10: TPC Pin State

TXM - Register 0, Bit 8

Transmit Mode: This bit controls the TX RF buffer state timing mode. It must be reset to 0 for normal operation (see

Table 11).

TXM TXRF BUFFER BEHAVIOR

0 RF Output Always On in TX Mode

1

RF Output Follows PAON

Table 11: TXM Mode

DS2724-F-03

FINAL DATASHEET

DECEMBER 2005 20

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