Datasheet

REV. 0

–28–

AD9887

Read and

Hex Write or Default Register

Address Read Only Bits Value Name Function

1BH R/W 7:0 00000000 Test Register Must be set to 00010000 for proper operation.

1CH

R/W

7:0 000001** 4:2:2 Control Bits [7:2]—Must be set to 011011** for proper operation.

******1* Bit 1—Must be set to default for proper operation.

*******1 Bit 0—Output Format Mode Select

Logic 1 = 4:4:4 mode

Logic 0 = 4:2:2 mode

1DH RO 7:0 Test Register Reserved for future use.

1EH RO 7:0 Test Register Reserved for future use.

1FH RO 7:0 Test Register Reserved for future use.

NOTE

The AD9887 only updates the PLL divide ratio when the LSBs are written to (Register 02h).

Table IX. Control Register Map (continued)

OBSOLETE