PEF2256EV22NP Lantiq, PEF2256EV22NP Datasheet - Page 44

• Manufacturer Part Number: PEF2256EV22NP
• Manufacturer: Lantiq

Specifications of PEF2256EV22NP

• Number Of Transceivers: 1
• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Supplier Unconfirmed

Table 5
Pin or
Ball No.
78 (B3)
Data Sheet
Name
SEC
FSC
Pin Definitions - Clock Interface (cont’d)
Pin
Type
I
O
O
Buffer
Type
PU
Function
One-Second Timer Reference Input
A pulse with logical high level for at least two
line clock cycles triggers the internal
one-second timer. After reset this pin is
configured to be an input. See register GPC1
for more detail.
One-Second Timer Output
Activated high once every second for the
duration of two line clock cycles.
Frame Synchronization Pulse
An 8-kHz Frame Synchronization Pulse is
output on this pin. The synchronization pulse
is active high or active low for one
2.048/1.544 MHz cycle ( E1 or T1/J1). FSC
can be switched into tri-state mode
(SIC3.FSCT)
44
Rev. 1.1, 2005-06-13
External Signals
PEF 2256 H/E
FALC
®
56