ADIN2111BCPZ-R7 datasheet(49/125 Pages) AD

49 / 125 page

Data Sheet

ADIN2111

SWITCH SPI

analog.com

Rev. 0 | 49 of 125

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CRSM_SFT_RST

In this example, these are the PMA/PMD, PCS, autonegotiation,

and Vendor Specific MMD 1 device address locations (per Table

41).

Having multiple address locations for the same register makes

the use of the device more complex than necessary, particularly

in relation to registers that have latch low or self clear access

permissions. This is an unavoidable consequence of the IEEE

standard.

The ADIN2111 data sheet only calls out a single recommended

address location for each of these IEEE registers to simplify the

operation and use of the device. In general, the registers intro-

duced in the 802.3cg (10BASE-T1L) section of the standard are

recommended over older (equivalent) registers. Often, registers in

a vendor specific address are recommended, particularly where a

all the IEEE register address locations covered by the 10BASE-T1L

standard when the start up completes after a power-on reset,

hardware reset, or software reset.

PHY Subsystem Registers Read Modify Write

Operation

All PHY subsystems register write operations must be performed

as read modify write operations. If this process is not followed, the

value of the register bits can inadvertently change.

ADIN2111BCPZ-R7 Datasheet(PDF) 49 Page - Analog Devices