R2000 datasheet(53/75 Pages) ETC

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Indy® R2000 Electrical, Mechanical, & Thermal Specification

Addr.

Name

R/W

Bit

Description

Reset

Type

Comment

2c0

FIFO_DELAY_SEL

R/W

2:0

Delay select

b0000

Delay between rate

estimator and the rest of

the demodulator:

0 = 0 samples.

1 = 32 samples.

2 = 64 samples.

3 = 96 samples.

4 = 128 samples.

5 = 160 samples.

6 = 192 samples.

7 = 224 samples.

2c1

DEMOD_DEFAULT

_NUM_TICKS

R/W

13:0

Ticks per oversampled clock

h0000

s9.4

Number of 48 MHz clock

ticks per oversampled

demodulator clock period.

This register is affected by

the SKU setting.

2c2

GAD_PROP_GAIN

_PREAM

R/W

9:0

Proportional gain,

before the preamble is found

h0000

s3.6

Proportional timing

recovery gain before the

preamble is found.

2c3

GAD_INT_GAIN_

PREAM

R/W

9:0

Integrator gain,

before the preamble is found

h0000

s1.8

Integrator timing recovery

gain before the preamble

is found.

2c4

GAD_PROP_GAIN

R/W

9:0

Proportional gain,

after the preamble is found

h0000

s3.6

Proportional timing

recovery gain after the

preamble is found.

2c5

GAD_INT_GAIN

R/W

9:0

Integrator gain,

after the preamble is found

h0000

s1.8

Integrator timing recovery

gain after the preamble is

found.

2c6

GARDNER_CTRL

R/W

En GAD when rate est. has

locked

Reset GAD with rate

estimator

Enable median filter in GAD

Enable reset of GAD loop

filter

(Enable clock generation

reset)

h0008

When reset is enabled the

loop filter and/or the clock

generation is reset when

the preamble is found.

Bit 0 must always be zero

for proper operation.

2c7

GARDNER_CTRL

R/W

5:4

2:0

NCO offset hit value

Not used

NCO hit value

h0000

For ISO 18000-6B/C:

NCO_offset_hit_value=2

NCO_hit_value=4

For iPico:

NCO_offset_hit_value=1

NCO_hit_value=2

2c8

TAG_RATE_

PREAM

13:0

NCO input (sd_mod_in) at

rising edge of pream_found

s9.4

The NCO runs at eight

times the link frequency.

2c9

TAG_RATE_END

13:0

NCO input (sd_mod_in) at

falling edge of pream_found

s9.4

2d1

PREAM_CTRL

R/W

14:8

6:0

Miller sub-carrier phase

Not used

Preamble threshold

h0000

The preamble correlator

coefficients are

programmable and defined

in registers h370-h37B.

The demodulator matched

filter coefficients are

programmable and defined

in registers h380-h397.

R2000 数据表(PDF) 53 Page - List of Unclassifed Manufacturers

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R2000 数据表(PDF) 53 Page - List of Unclassifed Manufacturers

R2000 数据表(HTML) 53 Page - List of Unclassifed Manufacturers

Html Pages

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