82V3012 Datasheet, PDF (1/32 Pages) Integrated Device Technology – T1/E1/OC3 WAN PLL WITH DUAL REFERENCE INPUTS

T1/E1/OC3 WAN PLL WITH DUAL
REFERENCE INPUTS
IDT82V3012
FEATURES
• Supports AT&T TR62411 and Telcordia GR-1244-CORE Stratum
3, Stratum 4 Enhanced and Stratum 4 timing for DS1 interfaces
• Supports ITU-T G.813 Option 1 clocks
• Supports ITU-T G.812 Type IV clocks
• Supports ETSI ETS 300 011, TBR 4, TBR 12 and TBR 13 timing
for E1 interface
• Selectable reference inputs: 8 kHz, 1.544 MHz, 2.048 MHz or
19.44 MHz
• Accepts two independent reference inputs which may have
same or different nominal frequencies applied to them
• Provides C1.5o, C3o, C2o, C4o, C6o, C8o, C16o, C19o and C32o
output clock signals
• Provides 7 types of 8 kHz framing pulses: F0o, F8o, F16o, F19o,
F32o, RSP and TSP
• Provides a C2/C1.5 output clock signal with the frequency
controlled by the selected reference input Fref0 or Fref1
• Holdover frequency accuracy of 0.025 ppm
• Phase slope of 5 ns per 125 µs
• Attenuates wander from 2.1 Hz
• Fast lock mode
• Provides Time Interval Error (TIE) correction
• MTIE of 600 ns
• JTAG boundary scan
• Holdover status indication
• Freerun status indication
• Normal status indication
• Lock status indication
• Input reference quality indication
• 3.3 V operation with 5 V tolerant I/O
• Package available: 56-pin SSOP (Green option available)
FUNCTIONAL BLOCK DIAGRAM
TDO TDI
OSCi TCLR RST
V_DDD V_SS V_DDD V_SS V_DDD V_SS V_DDA V_SS V_DDA V_SS
TCK
TMS
TRST
Fref0
Fref1
IN_sel
FLOCK
MON_out0
MON_out1
JTAG
OSC
Reference Input
Switch
TIE Control
Block
Virtual
Reference
Reference Input
Monitor 0
Reference Input
Monitor 1
Invalid Input
Signal Detection
DPLL
Feedback Signal
State Control Circuit
Frequency
Select Circuit 0
C2/C1.5
C32o
C19o
C19POS
C19NEG
C16o
C8o
C4o
C2o
C3o
C1.5o
C6o
F0o
F8o
F16o
F19o
F32o
RSP
TSP
LOCK
F0_sel0
F0_sel1
Frequency
Select Circuit 1
F1_sel0
F1_sel1
TIE_en MODE_sel1 MODE_sel0 Normal Holdover Freerun
IDT and the IDT logo are trademarks of Integrated Device Technology, Inc.
1
2006 Integrated Device Technology, Inc.
February 6, 2009
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