ADIS16COM1SLASHPCBZ datasheet(9/37 Pages) AD

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Preliminary Technical Data

ADIS16000/ADIS16229

Rev. PrA | Page 9 of 37

memory structure. The controller uses SRAM registers for

normal operation, including user-configuration commands.

The flash memory provides nonvolatile storage for control

registers that have flash backup (see Table 9 and Table 10).

When the device powers on or resets, the flash memory

contents load into the SRAM, and the device starts producing

data according to the configuration in the control registers.

Storing configuration data in the flash memory requires a

manual flash update command. For the ADIS16000, set DIN =

0x8000 (access page 0), then set DIN = 0x9240 (set

GLOB_CMD[6] = 1). For a remote ADIS16229, using the

following steps to update its flash: (1) turn to its page (DIN =

0x8001, to access note, for example), (2) set DIN = 0xB640

(GLOB_CMD[6] = 1), (3) set DIN = 0x8000 (turn to page 0)

and (4) set DIN = 0x9202 (GLOB_CMD[8] = 1).

NONVOLATILE

FLASH MEMORY

(NO SPI ACCESS)

MANUAL

FLASH

BACKUP

START-UP

RESET

VOLATILE

SRAM

SPI ACCESS

Figure 7. SRAM and Flash Memory Diagram

Figure 8. Star Wireless Network Example

Figure 9. ADIS16229 Simplified Block Diagram

ADIS16COM1/PCBZ 数据表(PDF) 9 Page - Analog Devices