DS2155 datasheet(118/262 Pages) DALLAS

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DS2156

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SR8

Status Register 8

24h

Bit #

Name

—

BOCC

RFDLAD

RFDLF

TFDLE

RMTCH

RBOC

Default

Bit 0/Receive BOC Detector Change-of-State Event (RBOC). Set whenever the BOC detector sees a change of

state to a valid BOC. The setting of this bit prompts the user to read the RFDL register.

Bit 1/Receive FDL Match Event (RMTCH). Set whenever the contents of the RFDL register matches RFDLM1

or RFDLM2.

Bit 2/TFDL Register Empty Event (TFDLE). Set when the transmit FDL buffer (TFDL) empties.

Bit 3/RFDL Register Full Event (RFDLF). Set when the receive FDL buffer (RFDL) fills to capacity.

Bit 4/RFDL Abort Detect Event (RFDLAD). Set when eight consecutive 1s are received on the FDL.

Bit 5/BOC Clear Event (BOCC). Set when 30 FDL bits occur without an abort sequence.

IMR8

Interrupt Mask Register 8

25h

Bit #

Name

—

BOCC

RFDLAD

RFDLF

TFDLE

RMTCH

RBOC

Default

Bit 0/Receive BOC Detector Change-of-State Event (RBOC)

0 = interrupt masked

1 = interrupt enabled

Bit 1/Receive FDL Match Event (RMTCH)

0 = interrupt masked

1 = interrupt enabled

Bit 2/TFDL Register Empty Event (TFDLE)

0 = interrupt masked

1 = interrupt enabled

Bit 3/RFDL Register Full Event (RFDLF)

0 = interrupt masked

1 = interrupt enabled

Bit 4/RFDL Abort Detect Event (RFDLAD)

0 = interrupt masked

1 = interrupt enabled

Bit 5/BOC Clear Event (BOCC)

0 = interrupt masked

1 = interrupt enabled

DS2155 Datasheet(PDF) 118 Page - Dallas Semiconductor

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