Owner's manual

DS21455/DS21458 Quad T1/E1/J1 Transceivers

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Figure 36-19. Transmit Side Boundary Timing (With Elastic Store Disabled)

NOTES:

1) TSYNC is in the output mode (IOCR1.1 = 1.)

2) TSYNC is in the input mode (IOCR1.1 = 0).

3) TCHBLK is programmed to block channel 2.

4) TLINK is programmed to source the Sa4 bit.

5) The signaling data at TSIG during channel 1 is normally overwritten in the transmit formatter with the

CAS multiframe-alignment nibble (0000).

6) Shown is a TNAF frame boundary.

LSB MSB LSB MSB

CHANNEL 1 CHANNEL 2

ABCD

TCLK

TSER

TSYNC

TSIG

TCHCLK

TCHBLK

TLCLK

TLINK

DON'T CARE

Si 1 A Sa4 Sa5 Sa6 Sa7 Sa8

DON'T CARE