DS21554L Просмотр технического описания (PDF) - Maxim Integrated

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производитель

DS21554L

3.3V/5V E1 Single-Chip Transceivers

Maxim Integrated 

DS21354/DS21554 3.3V/5V E1 Single-Chip Transceivers

Signal Name:

TLINK

Signal Description: Transmit Link Data

Signal Type:

Input

If enabled, this pin will be sampled on the falling edge of TCLK for data insertion into any combination

of the Sa bit positions (Sa4 to Sa8). See Section 13 for details.

Signal Name:

TSYNC

Signal Description: Transmit Sync

Signal Type:

Input/Output

A pulse at this pin will establish either frame or multiframe boundaries for the transmit side. Via TCR1.1,

the DS21354/DS21554 can be programmed to output either a frame or multiframe pulse at this pin. This

pin can also be configured as an input via TCR1.0. See Section 18 for details.

Signal Name:

TSSYNC

Signal Description: Transmit System Sync

Signal Type:

Input

Only used when the transmit-side elastic store is enabled. A pulse at this pin will establish either frame or

multiframe boundaries for the transmit side. Should be tied low in applications that do not use the

transmit-side elastic store.

Signal Name:

TSIG

Signal Description: Transmit Signaling Input

Signal Type:

Input

When enabled, this input will sample signaling bits for insertion into outgoing PCM E1 data stream.

Sampled on the falling edge of TCLK when the transmit-side elastic store is disabled. Sampled on the

falling edge of TSYSCLK when the transmit-side elastic store is enabled.

Signal Name:

TESO

Signal Description: Transmit Elastic Store Data Output

Signal Type:

Output

Updated on the rising edge of TCLK with data out of the transmit-side elastic store whether the elastic

store is enabled or not. This pin is normally tied to TDATA.

Signal Name:

TDATA

Signal Description: Transmit Data

Signal Type:

Input

Sampled on the falling edge of TCLK with data to be clocked through the transmit-side formatter. This

pin is normally tied to TESO.

Signal Name:

TPOSO

Signal Description: Transmit Positive Data Output

Signal Type:

Output

Updated on the rising edge of TCLKO with the bipolar data out of the transmit-side formatter. Can be

programmed to source NRZ data via the Output Data Format (TCR2.2) control bit. This pin is normally

tied to TPOSI.

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