PM8621 PMC-Sierra, Inc., PM8621 Datasheet - Page 177

• Manufacturer Part Number: PM8621
• Description: NSE-8G Standard Product Data Sheet Preliminary
• Manufacturer: PMC-Sierra, Inc.

17.1
17
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-2010850, Issue 1
A.C. Timing Characteristics
(T A = -40°C to +85°C, V DDO = 3.3 V ±5%, V DDI = 1.8 V ±5%)
Input Timing
Table 19 NSE-8G Input Timing (Figure 40)
Figure 41 NSE-8G Input Timing
Notes on Input Timing:
1.
2.
F SYSCLK
THI SYSCLK
TLO SYSCLK
TS CMP
TH CMP
TS RC1
TH RC1
Symbol
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 V point of the input to the 1.4 V point of the clock.
When a hold time is specified between an input and a clock, the hold time is the time in nanoseconds
from the 1.4 V point of the clock to the 1.4 V point of the input.
SYSCLK
RC1FP
CMP
Description
SYSCLK Frequency (nominally 77.76 MHz )
SYSCLK High Pulse Width
SYSCLK Low Pulse Width
CMP Set-Up Time
CMP Hold Time
RC1FP Set-Up Time
RC1FP Hold Time
tLO
SYSCLK
tS
tS
CMP
RC1
tH
tH
CMP
RC1
NSE-8G™ Standard Product Data Sheet
Min
-50
5
5
3
0
3
0
+50
Max
Preliminary
ppm
ns
ns
ns
ns
Units
ns
ns
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