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193S TRANSMIT MULTIFRAME TIMING Figure 9
NOTES:
1. Transmit frame and multiframe timing may be established in one of four ways:
a. With TFSYNC tied low, TMSYNC may be pulsed high once every multiframe period to establish
multiframe boundaries, allowing internal counters to determine frame timing.
b. TFSYNC may be pulsed every 125 microseconds; pulsing TMSYNC once establishes multiframe
boundaries.
c. TMSYNC and TFSYNC may be continuously pulsed to establish and reinforce frame and
superframe timing.
d. If TMSYNC is tied low and TFSYNC is pulsed at frame boundaries, the transmitter will establish
an arbitrary multiframe boundary as indicated by TMO.
2. Channels in which robbed bit signaling is enabled will sample TABCD during the LSB bit time in
frames indicated.
3. When external S-bit insertion is enabled, TLINK will be sampled during the F-bit time of even frames
and inserted into the outgoing data stream.
