CY24271

Document Number: 001-00411 Rev. *C

Page 6 of 16

Note

6. RW = Read and Write, RO = Read Only, POD = Power on default. See Table 2 on page 4 for PLL multipliers and Table 4 on page 5 for clock output selections.

Table 5. Command Code 80h[6]

Bit

Register

POD

Type

Description

7

Reserved

0

RW

Reserved (no internal function)

6

MULT2

0

RW

PLL Multiplier Select

5MULT1

0

RW

4MULT0

1

RW

3

RegA

1

RW

Clock 0 Output Select

2

RegB

1

RW

Clock 1 Output Select

1

RegC

1

RW

Clock 2 Output Select

0

RegD

1

RW

Clock 3 Output Select

Table 6. Command Code 81h[6]

Bit

Register

POD

Type

Description

7

Reserved

0

RW

Reserved (no internal function)

6

Reserved

0

RW

5

Reserved

0

RW

4

Reserved

0

RW

3

Reserved

1

RW

Reserved (must be set to ‘1’ for proper operation)

2

REFSEL

0

RW

Reference Frequency Select (reference Table 2 on page 4)

1

Reserved

0

RW

Reserved (must be set to ‘0’ for proper operation)

0

RegTest

0

RW

Reserved (must be set to ‘0’ for proper operation)

Table 7. Command Code 82h[6]

Bit

Register

POD

Type

Description

7Device

Revision

Number

?

RO

Contact factory for Device Revision Number information.

6?

RO

5?

RO

4?

RO

3?

RO

2

Vendor ID

0

RO

RAMBUS assigned Vendor ID Code

11

RO

00

RO

[+] Feedback