CDCE706

IS1

IS0

Function

0

0

CLK_IN0 is the crystal oscillator input, and CLK_IN1 serves as the crystal oscillator output.

Yes

CLK_IN0 and CLK_IN1 are two LVCMOS inputs. CLK_IN0 or CLK_IN1 is selectable via the CLK_SEL

0

1

control pin.

1

0

CLK_IN0 and CLK_IN1 serve as differential signal inputs.

1

1

Reserved

(1)

In case the crystal input or differential clock input is selected, the input clock selection, byte 10, bit [4], is not relevant.

(2)

Unless customer-specific setting

Byte 12, Bit [6]: Power-Down Mode (Except SMBus)

PD

Power-Down Mode

0

Normal device operation

Yes

1

(1)

Unless customer-specific setting

(2)

In power down, all PLLs and the clock-input stage go into power-down mode, all outputs are in the high-impedance state, all actual

register settings are maintained, and the SMBus stays active. The power-down mode overwrites the high-impedance state or low state

of the S0 and S1 settings in byte 10.

Bytes 13 to 18, Bit [6:0]: Outputs Switch Matrix 6 × 7-Bit Divider P0–P5

DIVYx6

DIVYx5

DIVYx4

DIVYx3

DIVYx2

DIVYx1

DIVYx0

Div by

0

0

0

0

0

0

0

Not allowed

0

0

0

0

0

0

1

1

0

0

0

0

0

1

0

2

•

•

•

1

1

1

1

1

0

1

125

1

1

1

1

1

1

0

126

1

1

1

1

1

1

1

127

(1)

Unless customer-specific setting

(2)

Default settings of divider P0 = 10, P1 = 20, P2 = 8, P3 = 9, P4 = 32, and P5 = 4.

Bytes 19 to 24, Bits [5:4]: LVCMOS Output Rise/Fall Time Setting at Y0–Y5

SRCYx1

SRCYx0

Yx

0

0

0

1

1

0

1

1

Yes

(1)

Unless customer-specific setting

Bytes 19 to 24, Bits [2:0]: Outputs Switch Matrix (6 × 6 Switch B) Divider (P0–P5) Selection for Outputs Y0–Y5

SWBYx2

SWBYx1

SWBYx0

Any Output Yx

0

0

0

Divider P0

0

0

1

Divider P1

0

1

0

Divider P2

Y0, Y1, Y2, Y3, Y4, Y5

0

1

1

Divider P3

1

0

0

Divider P4

1

0

1

Divider P5

1

1

0

Reserved

1

1

1

Reserved

(1)

Unless customer-specific setting

Copyright © 2005–2008, Texas Instruments Incorporated

Submit Documentation Feedback

19

Product Folder Link(s): CDCE706