DS2196 datasheet(109/157 Pages) DALLAS

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DS2196

109 of 157

RBOCA: RECEIVE BIT ORIENTED CODE REGISTER FRAMER A

(Address = 04 Hex)

RBOCB: RECEIVE BIT ORIENTED CODE REGISTER FRAMER B

(Address = A4 Hex)

(MSB)

(LSB)

LBD

BOC5

BOC4

BOC3

BOC2

BOC1

BOC0

SYMBOL

POSITION

NAME AND DESCRIPTION

LBD

RBOC.7

Latched BOC Detected. A latched version of the BD status bit

(RBOC.6). Will be cleared when read.

RBOC.6

BOC Detected. A real–time bit that is set high when the BOC

detector is presently seeing a valid sequence and set low when

no BOC is currently being detected.

BOC5

RBOC.5

BOC Bit 5. Last bit received of the 6–bit code word.

BOC4

RBOC.4

BOC Bit 4.

BOC3

RBOC.3

BOC Bit 3.

BOC2

RBOC.2

BOC Bit 2.

BOC1

RBOC.1

BOC Bit 1.

BOC0

RBOC.0

BOC Bit 0. First bit received of the 6–bit code word.

NOTE:

1. The LBD bit is latched and will be cleared when read.

2. The RBOC0 to RBOC5 bits display the last valid BOC code verified; these bits will be set to all 1’s

on reset.

RHFRA: RECEIVE HDLC FIFO from FRAMER A (Address = 05 Hex)

RHFRB: RECEIVE HDLC FIFO from FRAMER B (Address = A5 Hex)

(MSB)

(LSB)

HDLC7

HDLC6

HDLC5

HDLC4

HDLC3

HDLC2

HDLC1

HDLC0

SYMBOL

POSITION

NAME AND DESCRIPTION

HDLC7

RHFR.7

HDLC Data Bit 7. MSB of a HDLC packet data byte.

HDLC6

RHFR.6

HDLC Data Bit 6.

HDLC5

RHFR.5

HDLC Data Bit 5.

HDLC4

RHFR.4

HDLC Data Bit 4.

HDLC3

RHFR.3

HDLC Data Bit 3.

HDLC2

RHFR.2

HDLC Data Bit 2.

HDLC1

RHFR.1

HDLC Data Bit 1.

HDLC0

RHFR.0

HDLC Data Bit 0. LSB of a HDLC packet data byte.

DS2196 Datasheet(PDF) 109 Page - Dallas Semiconductor

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