DS21352 datasheet(32/137 Pages) DALLAS

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DS21352/DS21552

32 of 137

RCR2: RECEIVE CONTROL REGISTER 2 (Address=2C Hex)

(MSB)

(LSB)

RCS

RZBTSI

RSDW

RSM

RSIO

RD4YM

FSBE

MOSCRF

SYMBOL

POSITION

NAME AND DESCRIPTION

RCS

RCR2.7

Receive Code Select.

0 = idle code (7F Hex)

1 = digital milliwatt code (1E/0B/0B/1E/9E/8B/8B/9E Hex)

RZBTSI

RCR2.6

Receive Side ZBTSI Support Enable. Allows ZBTSI information to be output on

RLINK pin.

0 = ZBTSI disabled

1 = ZBTSI enabled

RSDW

RCR2.5

RSYNC Double–Wide. (note: this bit must be set to zero when RCR2.4 = 1 or when

RCR2.3 = 1)

0 = do not pulse double wide in signaling frames

1 = do pulse double wide in signaling frames

RSM

RCR2.4

RSYNC Mode Select. Selects frame or multiframe pulse when RSYNC pin is in output

mode. In input mode (elastic store must be enabled) multiframe mode is only useful

when receive signaling re-insertion is enabled. See the timing in Section 21.

0 = frame mode

1 = multiframe mode

RSIO

RCR2.3

RSYNC I/O Select. (note: this bit must be set to zero when CCR1.2 = 0)

0 = RSYNC is an output

1 = RSYNC is an input (only valid if elastic store enabled)

RD4YM

RCR2.2

Receive Side D4 Yellow Alarm Select.

0 = zeros in bit 2 of all channels

1 = a one in the S–bit position of frame 12

FSBE

RCR2.1

PCVCR Fs–Bit Error Report Enable.

0 = do not report bit errors in Fs–bit position; only Ft bit position

1 = report bit errors in Fs–bit position as well as Ft bit position

MOSCRF

RCR2.0

Multiframe Out of Sync Count Register Function Select.

0 = count errors in the framing bit position

1 = count the number of multiframes out of sync

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