HSP50215 Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

HSP50215

Digital UpConverter

Intersil 

HSP50215

BIT

POSITION

2

1-0

CONTROL ADDRESS 16: MODULATION CONTROL (Continued)

FUNCTION

Delay Select

Mod Type

DESCRIPTION

DLYSEL.

1 = no delay.

0 = 1/2 coarse sample delay.

MOD(1:0):

00 = QASK.

01 = FM with filtering after modulation (analog FM with baseband filtering provided before

HSP50215). In this mode, both I and Q filters are used.

10 = FM with filtering before modulation (FSK, GMSK). This mode uses only the I filter bank.

11 = not used.

BIT

POSITION

15-8

7-0

FUNCTION

Reserved

Output Gain

CONTROL ADDRESS 17: GAIN CONTROL

Reserved.

OUTGAIN(7:0)

DESCRIPTION

OUTGAIN (7:0)

1111 1111

1000 0000

0100 0000

0010 0000

0001 0000

0000 1000

0000 0100

0000 0010

0000 0001

ATTENUATION

(dBFS)

-0.033996

-6.021

-12.041

-18.062

-24.082

-30.103

-36.124

-42.144

-48.165

SCALING GAIN

((VOUT/VIN)%)

99.6

50.0

25.0

12.5

6.25

3.125

1.5625

0.78125

0.390625

BIT

POSITION

15-3

2-0

FUNCTION

Reserved (Note 1)

FIFORDY Threshold

BIT

POSITION

15-6

5-2

1-0

FUNCTION

Reserved (Note 1)

DS

IP

CONTROL WORDS 18: FIFO CONTROL

DESCRIPTION

Reserved (Note 1).

RTH(2:0). Programmable FIFO READY Threshold. This digital word represents the FIFO depth

threshold (number of data samples in the FIFO) at which the FIFORDY will be asserted, alerting the

data source that more input data is required in the FIFO. The FIFO threshold sets both the I and Q

FIFO thresholds. RTH2 is the MSB.

CONTROL WORDS 19: POLYPHASE CONTROL

DESCRIPTION

Reserved (Note 1).

DS(3:0). Number of data samples in shaping filter, 4-16. Load with number of data samples minus 1.

IP(1:0). Number of interpolation phases:

00 = not valid.

01 = 4.

10 = 8.

11 = 16.

3-438

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