IDT82V3380AEQGBLANK IDT [Integrated Device Technology], IDT82V3380AEQGBLANK Datasheet - Page 39

• Manufacturer Part Number: IDT82V3380AEQGBLANK
• Manufacturer: IDT [Integrated Device Technology]

3.12
performance of the device output clocks.
/ T4_APLL_BW[1:0] bits respectively. The lower the bandwidth is, the
better the jitter and wander performance of the T0/T4 APLL output are.
T4 DPLL outputs, as selected by the T0_APLL_PATH[3:0] /
T4_APLL_PATH[3:0] bits respectively.
device output.
Table 24: Related Bit / Register in Chapter 3.12
3.13
altogether.
3.13.1
following technologies:
Functional Description
IDT82V3380A
T0_APLL_PATH[3:0]
T4_APLL_PATH[3:0]
T0_APLL_BW[1:0]
T4_APLL_BW[1:0]
A T0 APLL and a T4 APLL are provided for a better jitter and wander
The bandwidths of the T0/T4 APLL are set by the T0_APLL_BW[1:0]
The input of the T0/T4 APLL can be derived from one of the T0 and
Both the APLL and DPLL outputs are provided for selection for the
The device supports 9 output clocks and 2 frame sync output signals
The device provides 9 output clocks.
According to the output port technology, the output ports support the
OUT1 ~ OUT5 and OUT9 output a CMOS signal.
• AMI;
• PECL/LVDS;
• CMOS.
Bit
T0 / T4 APLL
OUTPUT CLOCKS & FRAME SYNC SIGNALS
OUTPUT CLOCKS
T0_DPLL_APLL_PATH_CNFG
T4_DPLL_APLL_PATH_CNFG
T0_T4_APLL_BW_CNFG
Register
Address (Hex)
6A
55
60
39
OUT6_PECL_LVDS bit and the OUT7_PECL_LVDS bit respectively.
derived from the T0/T4 DPLL and T0/T4 APLL outputs, and the corre-
sponding OUTn_PATH_SEL[3:0] bits (1 ≤ n ≤ 7). The derived signal can
be from the T0/T4 DPLL and T0/T4 APLL outputs, as selected by the
corresponding OUTn_PATH_SEL[3:0] bits (1 ≤ n ≤ 7). If the signal is
derived from one of the T0/T4 DPLL outputs, please refer to
the output frequency. If the signal is derived from the T0/T4 APLL output,
please refer to
as selected by the OUT8_PATH_SEL bit. After being divided automati-
cally, the output is of 64 kHz + 8 kHz or 64 kHz + 8 kHz + 0.4 kHz, as
selected by the 400HZ_SEL bit. Its duty cycle is 50:50 or 5:8, as deter-
mined by the AMI_OUT_DUTY bit.
as selected by the OUT9_PATH_SEL bit. After being divided automati-
cally, the output is of 2.048 MHz or 1.544 MHz, as selected by the
IN_SONET_SDH bit.
be affected by the status of the T4 input clock. It is determined by the
OUT8_EN / OUT9_EN and T4_INPUT_FAIL
Refer to
mined by the corresponding OUTn_INV bit (1 ≤ n ≤ 7 or n = 9).
aligned with the T0/T4 selected input clock respectively every 125 µs
period.
OUT6 and OUT7 output a PECL or LVDS signal, as selected by the
OUT8 outputs an AMI signal.
The outputs on OUT1 ~ OUT7 are variable, depending on the signals
The outputs on OUT1 to OUT7 and OUT9 can be inverted, as deter-
All the output clocks derived from T0/T4 selected input clock are
The output on OUT8 is derived from T0 or T4 DPLL 77.76 MHz path,
The output on OUT9 is derived from T0 or T4 DPLL 16E1/16T1 path,
The outputs on OUT8 and OUT9 can be enabled or disabled, or may
Table
29.
Table 26~Table 28
SYNCHRONOUS ETHERNET WAN PLL™
for the output frequency.
1
/ T4_INPUT_FAIL
May 16, 2011
Table 25
2
bits.
for