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STANDARD PRODUCT
PM8315 TEMUX
DATASHEET
PMC-1981125
ISSUE 7
HIGH DENSITY T1/E1 FRAMER WITH
INTEGRATED VT/TU MAPPER AND M13 MUX
PROPRIETARY AND CONFIDENTIAL
307
5. XCLK frequency must be 24x the line rate ±32 ppm when TJAT is free-
running or referenced to a derivative of XCLK. XCLK may be ± 100 ppm if an
accurate reference is provided to TJAT.
6. CTCLK can be a jittered clock signal subject to the minimum high and low
durations tHCTCLK, tLCTCLK. These durations correspond to nominal
XCLK input frequency.
7. When a set-up time is specified between an input and a clock, the set-up
time is the time in nanoseconds from the 1.4 Volt point of the input to the 1.4
Volt point of the clock.
8. When a hold time is specified between an input and a clock, the hold time is
the time in nanoseconds from the 1.4 Volt point of the clock to the 1.4 Volt
point of the input.
9. Setup, hold, and propagation delay specifications are shown relative to the
default active clock edge, but are equally valid when the opposite edge is
selected as the active edge.
10. Output propagation delay time is the time in nanoseconds from the 1.4 Volt
point of the reference signal to the 1.4 Volt point of the output.
11. Output propagation delays are measured with a 50 pF load on all outputs with
the exception of the high speed DS3 outputs (TCLK, TPOS/TDAT,
TNEG/TMFP). The TCLK, TPOS/TDAT, TNEG/TMFP output propagation
delays are measured with a 20 pF load.
Table 66
- Remote Serial Alarm Port Timing
Symbol
Description
Min
Max
Units
RADEASTCK and RADWESTCK
Frequency
1.344
10
MHz
RADEASTCK and RADWESTCK Duty
Cycle
40
60
%
tHRADFP
RADEASTFP and RADWESTFP Hold
Time
5
ns
tSRADFP
RADEASTFP and RADWESTFP Setup
Time
5
ns
tHRAD
tSRAD
RADEAST and RADWEST Hold Time
5
ns
RADEAST and RADWEST Setup Time
5
ns