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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
286
Figure 93
- Line Side Telecom BUS InputTiming
LREFCLK
tS
TEL
tH
TEL
LAC1
LDDATA[7:0]
LDDP,LDPL
LDTPL,LDAIS
LDV5,LDC1J1
Table 51
- Telecom BUS Output Timing (Figure 97 to Figure 98)
Symbol
Description
Min
Max
Units
tP
TEL
LREFCLK to all Telecom BUS Outputs
Valid (See Notes 1,2 and 4)
3
20
ns
tZ
TEL
LREFCLK to all Telecom BUS tristateable
Outputs going tristate (See Note 3)
3
12
ns
tP
TELOE
LREFCLK to all Telecom BUS tristateable
Outputs going valid from tristate
(See Notes 1,2 and 4)
3
20
ns
Notes on Telecom Bus Output Timing:
1. 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.
2. Maximum and minimum output propagation delays are measured with a 100
pF load on all the outputs.
3. Output tristate delay is the time in nanoseconds from the 1.4 Volt point of the
reference signal to the point where the total current delivered through the
output is less than or equal to the leakage current.
4. The propagation delay, tP
TEL
, should be used when Telecom bus outputs are
always driven as configured by LADDOE in register 1200H. The propagation
delays, tP
TELOE
and tZ
TEL
, should be used when the Telecom bus outputs
are multiplexed with other TEMUX devices using the tristate capability of the