IDT82V3280 Integrated Device Technology, IDT82V3280 Datasheet - Page 19

• Manufacturer Part Number: IDT82V3280
• Description: Wan Pll
• Manufacturer: Integrated Device Technology

Table 2: Related Bit / Register in Chapter 3.2
3
3.1
default value or status.
50 µs. After the RST pin is pulled high, the device will still be in reset
state for 500 ms (typical). If the RST pin is held low continuously, the
device remains in reset state.
Functional Description
IDT82V3280
The reset operation resets all registers and state machines to their
After power on, the device must be reset for normal operation.
For a complete reset, the RST pin must be asserted low for at least
NOMINAL_FREQ_VALUE[23:0]
FUNCTIONAL DESCRIPTION
RESET
OSC_EDGE
Bit
NOMINAL_FREQ[23:16]_CNFG, NOMINAL_FREQ[15:8]_CNFG, NOMINAL_FREQ[7:0]_CNFG
DIFFERENTIAL_IN_OUT_OSCI_CNFG
19
3.2
input on the OSCI pin. This clock is provided for the device as a master
clock. The master clock is used as a reference clock for all the internal
circuits. A better active edge of the master clock is selected by the
OSC_EDGE bit to improve jitter and wander performance.
pin.
NOMINAL_FREQ_VALUE[23:0] bits. The calibration range is within
±741 ppm.
GR-253-CORE, ITU-T G.812 and G.813 criteria.
A nominal 12.8000 MHz clock, provided by a crystal oscillator, is
In fact, an offset from the nominal frequency may input on the OSCI
The performance of the master clock should meet GR-1244-CORE,
Register
This
MASTER CLOCK
offset
can
be
compensated
by
June 19, 2006
Address (Hex)
setting
06, 05, 04
WAN PLL
0A
the