CDCM6208V1FRGZR datasheet(47/87 Pages) TI1

Part #	CDCM6208V1FRGZR

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

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Manufacturer	TI1 [Texas Instruments]

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CDCM6208V1F

www.ti.com

SCAS943 – MAY 2015

Table 19. Register 8

BIT

BIT NAME

RELATED BLOCK

DESCRIPTION/FUNCTION

15

RESERVED

This bit must be set to 0

14

RESERVED

This bit must be set to 0

13

RESERVED

This bit must be set to 0

12

RESERVED

This bit must be set to 0

11

RESERVED

This bit must be set to 0

10

RESERVED

This bit must be set to 0

9

RESERVED

This bit must be set to 0

8

RESERVED

This bit must be set to 0

Output Channels 2

Output channels 2 and 3 8-b output integer divider setting

7:0

OUTDIV2_3[7:0]

and 3

(Divider value is register value +1)

Table 20. Register 9

BIT

BIT NAME

RELATED BLOCK

DESCRIPTION/FUNCTION

15

RESERVED

This bit must be set to 0

Output MUX setting for output channel 4:

00 and 11

→ PLL

14:13

OUTMUX_CH4[1:0]

01

→ Primary input

10

→ Secondary input

Output channel 4 fractional divider's 3-b pre-divider setting (this pre-

divider is bypassed if Q9.9 = 0)

000

→ Divide by 2

12:10

PRE_DIV_CH4[2:0]

001

→ Divide by 3

111

→ Divide by 1

All other combinations reserved

Output channel 4 fractional divider enable:

9

EN_FRACDIV_CH4

0

→ Disable

1

→ Enable

Output channel 4 LVCMOS output slew:

8

LVCMOS_SLEW_CH4

0

→ Normal

1

→ Slow

Output channel 4 negative-side LVCMOS enable:

0

→ Disable

7

EN_LVCMOS_N_CH4

Output Channel 4

1

→ Enable (Negative side can only be enabled if positive side is

enabled)

Output channel 4 positive-side LVCMOS enable:

6

EN_LVCMOS_P_CH4

0

→ Disable

1

→ Enable

5

RESERVED

This bit must be set to 0

Output channel 4 type selection:

00 or 01

→ LVDS

4:3

SEL_DRVR_CH4[2:0]

10

→ LVCMOS

11

→ HCSL

Output channel 4 enable:

00

→ Disable

2:1

EN_CH4[1:0]

01

→ Enable

10

→ Drive static 0

11

→ Drive static 1

Output channel 4 Supply Voltage Selection:

0

SUPPLY_CH4 (1)

0

→ 1.8 V

1

→ 2.5/3.3 V

(1)

It is ok to power up the device with a 2.5 V / 3.3 V supply while this bit is set to 0 and to update this bit thereafter.

Table 21. Register 10

BIT

BIT NAME

RELATED BLOCK

DESCRIPTION/FUNCTION

15

RESERVED

This bit must be set to 0

14

RESERVED

This bit must be set to 0

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