DS2154 datasheet(24/87 Pages) DALLAS

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DS2154

24 of 87

TCR1: TRANSMIT CONTROL REGISTER 1 (Address=12 Hex)

(MSB)

(LSB)

ODF

TFPT

T16S

TUA1

TSiS

TSA1

TSM

TSIO

SYMBOL

POSITION

NAME AND DESCRIPTION

ODF

TCR1.7

Output Data Format.

0=bipolar data at TPOSO and TNEGO

1=NRZ data at TPOSO; TNEGO=0

TFPT

TCR1.6

Transmit Timeslot 0 Pass Through.

0=FAS bits/Sa bits/Remote Alarm sourced internally from the

TAF and TNAF registers

1=FAS bits/Sa bits/Remote Alarm sourced from TSER

T16S

TCR1.5

Transmit Timeslot 16 Data Select.

0=sample timeslot 16 at TSER pin

1=source timeslot 16 from TS0 to TS15 registers

TUA1

TCR1.4

Transmit Unframed All 1s.

0=transmit data normally

1=transmit an unframed all 1’s code at TPOSO and TNEGO

TSiS

TCR1.3

Transmit International Bit Select.

0=sample Si bits at TSER pin

1=source Si bits from TAF and TNAF registers (in this mode,

TCR1.6 must be set to 0)

TSA1

TCR1.2

Transmit Signaling All 1s.

0=normal operation

1=force timeslot 16 in every frame to all 1s

TSM

TCR1.1

TSYNC Mode Select.

0=frame mode (see the timing in Section 13)

1=CAS and CRC4 multiframe mode (see the timing in Section

13)

TSIO

TCR1.0

TSYNC I/O Select.

0=TSYNC is an input

1=TSYNC is an output

NOTE:

See Figure 13-11 for more details about how the Transmit Control Registers affect the operation of the

DS2154.

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