DS2155 datasheet(117/262 Pages) DALLAS

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DS2156

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BOCC

BOC Control Register

37h

Bit #

Name

—

RBOCE

RBR

RBF1

RBF0

SBOC

Default

Bit 0/Send BOC (SBOC). Set = 1 to transmit the BOC code placed in bits 0 to 5 of the TFDL register.

Bits 1 and 2/Receive BOC Filter Bits (RBF0, RBF1). The BOC filter sets the number of consecutive patterns that

must be received without error prior to an indication of a valid message.

RBF1

RBF0

Consecutive BOC Codes for

Valid Sequence Identification

None

Bit 3/Receive BOC Reset (RBR). A 0-to-1 transition resets the BOC circuitry. Must be cleared and set again for a

subsequent reset.

Bit 4/Receive BOC Enable (RBOCE). Enables the receive BOC function. The RFDL register reports the received

BOC code and two information bits when this bit is set.

0 = receive BOC function disabled

1 = receive BOC function enabled; the RFDL register reports BOC messages and information

Bits 5 to 7/Unused, must be set to 0 for proper operation

RFDL

Receive FDL Register

C0h

Bit #

Name

—

RBOC5

RBOC4

RBOC3

RBOC2

RBOC1

RBOC0

Default

RFDL register bit definitions when BOCC.4 = 1:

Bit 0/BOC Bit 0 (RBOC0)

Bit 1/BOC Bit 1 (RBOC1)

Bit 2/BOC Bit 2 (RBOC2)

Bit 3/BOC Bit 3 (RBOC3)

Bit 4/BOC Bit 4 (RBOC4)

Bit 5/BOC Bit 5 (RBOC5)

Bits 6, 7/This bit position is unused when BOCC.4 = 1.

DS2155 Datasheet(PDF) 117 Page - Dallas Semiconductor

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