Datasheet

DS26504 T1/E1/J1/64KCC BITS Element
101 of 129
15.2 Transmit 64kHz Synchronization Interface Operation
In the transmit path, the framer generateS the appropriate AMI waveform with the correct bipolar
violations as described by G.703 and GR.378. If an 8kHz signal is present on the TS_8K_4 pin, the
bipolar violations are generated synchronously with this signal. If it is absent, the part arbitrarily
generates the bipolar violation at an 8kHz frequency.
Table 15-2. Specification of 64kHz Clock Signal at Output Port
BPV SUBRATES LOAD PULSE WIDTH AMPLITUDE
G.703 Level A
8kHz
110Ω ≤ 7.8 ± 0.78μs ≤1V
0-P
± 0.1V
G.703 Level B
8kHz
110Ω 9.8 to 10.9μs 3.0V ± 0.5V
G.703 Japanese
8kHz + 400Hz
110Ω ≤ 7.8 ± 0.78μs ≤1 V
0-P
± 0.1V
GR.378
8kHz
133Ω
5/8 period
(9.7μs)
2.7V – 5.5V