CDCM6208V2GRGZR datasheet(33/88 Pages) TI1

Part #	CDCM6208V2GRGZR

Description	CDCM6208V2G 2:8 Clock Generator, Jitter Cleaner with Fractional Dividers

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Manufacturer	TI1 [Texas Instruments]

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CDCM6208V2G

www.ti.com

SNAS682 – MARCH 2016

Product Folder Links: CDCM6208V2G

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10.4.2 Loop Filter Recommendations for Pin Modes

The following two tables provide the internal charge pump and R3/C3 settings for pin modes. The designer can

either design their own optimized loop filter, or use the suggested loop filter in the Table 5.

Table 5. CDCM6208V2G Loop Filter Recommendation for Pin Mode

Use Case

PRI_REF

SEC_REF

f(PFD)

(MHz)

ICP

(mA)

Recommended

External LPF

Components

C1 / R2 / C2

Internal LPF

Components

Freq

(MHz)

Type

Freq

(MHz)

Type

R3

(Ω)

C3

(pF)

00

I/O

SPI

Default

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

01

I/O

I2C

Default

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

11

RESERVED

10

0x00

1-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x01

2-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x02

3-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x03

4-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x04

5-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x05

6-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x06

7-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x07

8-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x08

9-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x09

10-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0A

11-V2G

25

LVCMOS

25

LVCMOS

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0B

12-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0C

13-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0D

14-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0E

15-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x0F

16-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x10

17-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x11

18-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x12

19-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x13

20-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x14

21-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x15

22-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x16

23-V2G

X

Disable

25

Crystal

MAN-

SEC

25

2.5

200pF / 400Ω / 22nF

100

242.5

10

0x17

24-V2G

25

LVCMOS

25

Crystal

MAN-

SEC

6.25

4m

22pF / 860Ω / 22nF

100

242.5

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