CC400-RTR2 datasheet(25/31 Pages) TI

25 / 31 page

CC400

SWRS050

Page 25 of 32

NAME

Default

value

Active

Description

E[9:8]

PACL[1:0]

PA “class”

00 = Class A

01 = Class AB

10 = Class B

11 = Class C

E[7:0]

D[7:0]

D-counter

Frequency seperation programming

NAME

Default

value

Active

Description

F[12:11]

DCLK[1:0]

Demodulator shift register clock selection

00 = External clock (25MHz) at TX_DATA.

01 = 12.8 MHz from crystal oscillator

10 = 25 MHz from prescaler

11 = 12.5MHz from prescaler

F[10:9]

DEMIF[1:0]

Demodulator phase shift / IF control

00 = 60kHz IF

01 = 200kHz IF

10 = 455kHz IF

11 = Test modes using DCLK1:DCLK0

F[8:6]

TDEM[2:0]

000

Test modes for demodulator. Output is monitored at LOCK

pin. See also S2:S0 in frame A.

TDEM2=0: As described for S2:S0 in frame A

TDEM2=1 : Demodulator test modes.

Modus (000):

Normal setting.

Modus (0XX):

Test as for S2:S0 in frame A monitored at LOCK pin.

Modus (100):

Demodulator input monitored at LOCK pin.

Modus (101):

Phase shifted signal monitored at LOCK pin.

Modus (110):

Phase detector output monitored at LOCK pin.

Modus (111):

Demodulator output at LOCK pin. IF input at TX_DATA.

F[5:3]

PAIMP[2:0]

PA capacitor array.

Array is active in RX or TX depending on INVARRAY.

000 = 0pF

001 = 1.25pF

010 = 2.5pF

011 = 3.75pF

100 = 5pF

101 = 6.25pF

110 = 7.5pF

111 = 8.75pF

F[2]

INVARRAY

PA capacitor array activation.

0 = Capacitor array active in RX mode

1 = Capacitor array active in TX mode

F[1:0]

PAEC[1:0]

PA buffer amplifier drive level

00 = 3mA

01 = 5mA

10 = 8mA

11 = 11mA

CC400-RTR2 数据表(PDF) 25 Page - Texas Instruments

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