AD9528 datasheet(53/67 Pages) AD

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Data Sheet

AD9528

Rev. D | Page 53 of 67

CLOCK PART FAMILY ID (REGISTER 0x0003 TO REGISTER 0x0006)

Table 39. Clock Part Family ID

Address

Bits

Bit Name

Description

0x0003

[7:4]

Reserved

Reserved.

[3:0]

Chip type, Bits[3:0]

The Analog Devices unified SPI protocol reserves this read only register location for

identifying the type of device. The default value of 0x05 identifies the AD9528 as a clock IC.

0x0004

[7:4]

Clock part serial ID, Bits[3:0]

The Analog Devices unified SPI protocol reserves this read only register location as the

lower four bits of the clock part serial ID that, along with Register 0x0005, uniquely

identifies the AD9528 within the Analog Devices clock chip family. No other Analog

Devices chip that adheres to the Analog Devices unified SPI has these values for

for these four bits it is 0xF.

[3:0]

Reserved

Default = 0xF.

0x0005

[7:0]

Clock part serial ID,

Bits[11:4]

The Analog Devices unified SPI protocol reserves this read only register location as the

upper eight bits of the clock part serial ID that, along with Register 0x0004, uniquely

identifies the AD9528 within the Analog Devices clock chip family. No other Analog

Devices chip that adheres to the Analog Devices unified SPI has these values for

0x0006

[7:0]

Part versions, Bits[7:0]

The Analog Devices unified SPI protocol reserves this read only register location for

identifying the die revision. Default = 0x03.

SPI VERSION (REGISTER 0x000B)

Table 40. SPI Version

Bits

Bit Name

Description

[7:0]

SPI version, Bits[7:0]

The Analog Devices unified SPI protocol reserves this read only register location for identifying the version

of the unified SPI protocol. Default = 0x00.

VENDOR ID (REGISTER 0x000C TO REGISTER 0x000D)

Table 41. Vendor ID

Address

Bits

Bit Name

Description

0x000C

[7:0]

Vendor ID, Bits[7:0]

The Analog Devices unified SPI protocol reserves this read only register location for identifying

Analog Devices as the chip vendor of this device. All Analog Devices devices adhering to the

unified serial port specification have the same value in this register. Default = 0x56.

0x000D

[7:0]

Vendor ID, Bits[15:8]

The Analog Devices unified SPI protocol reserves this read only register location for identifying

Analog Devices as the chip vendor of this device. All Analog Devices devices adhering to the

unified serial port specification have the same value in this register. Default = 0x04.

IO_UPDATE (REGISTER 0x000F)

Table 42. IO_UPDATE

Bits

Bit Name

Description

[7:1]

Reserved

Reserved. Default = 0000000b.

IO_UPDATE

Writing a 1 to this bit transfers the data in the serial input/output buffer registers to the internal control registers of the

device. This is an autoclearing bit.

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