IDT82V3285DQGT IDT, Integrated Device Technology Inc, IDT82V3285DQGT Datasheet - Page 37

• Manufacturer Part Number: IDT82V3285DQGT
• Description: IC PLL WAN STRATUM 100-TQFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: PLL Clock Generatorr

Specifications of IDT82V3285DQGT

• Input: CMOS, LVDS, PECL, TTL
• Output: CMOS, LVDS, PECL, TTL
• Frequency - Max: 622.08MHz
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP, 100-VQFP
• Frequency-max: 622.08MHz
• Function: Wan PLL
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: TQFP
• Pin Count: 100
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 82V3285DQGT

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 23: Related Bit / Register in Chapter 3.12
3.13
altogether.
Table 24: Outputs on OUT1 ~ OUT5 if Derived from T0/T4 DPLL Outputs
Functional Description
IDT82V3285
Note:
1. 1 ≤ n ≤ 5. Each output is assigned a frequency divider.
2. E1 = 2.048 MHz, T1 = 1.544 MHz, E3 = 34.368 MHz, T3 = 44.736 MHz. The blank cell means the configuration is reserved.
OUTn_DIVIDER[3:0]
T0_APLL_PATH[3:0]
T4_APLL_PATH[3:0]
(Output Divider)
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 5 output clocks and 2 frame sync output signals
0000
0001
0010
0011
0100
0101
0110
1000
1001
1010
1011
1100
1101
0111
1110
1111
Bit
T0 / T4 APLL
OUTPUT CLOCKS & FRAME SYNC SIGNALS
1
77.76 MHz
64 kHz
400 Hz
T0_DPLL_APLL_PATH_CNFG
T4_DPLL_APLL_PATH_CNFG
8 kHz
2 kHz
1Hz
T0_T4_APLL_BW_CNFG
Register
12E1
12E1
6E1
3E1
2E1
E1
16E1
16E1
8E1
4E1
2E1
E1
outputs on OUT1 ~ OUT5 if derived from T0/T4 DPLL outputs
Address (Hex)
6A
55
60
24T1
24T1
12T1
6T1
4T1
3T1
2T1
T1
Output is disabled (output high).
Output is disabled (output low).
37
16T1
16T1
3.13.1
following technologies:
OUT4_PECL_LVDS bit and the OUT5_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 ≤ 5). 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 ≤ 5). 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
corresponding OUTn_INV bit (1 ≤ n ≤ 5).
aligned with the T0/T4 selected input clock respectively every 125 µs
period.
8T1
4T1
2T1
T1
The device provides 5 output clocks.
According to the output port technology, the output ports support the
OUT1 ~ OUT3 output CMOS signals.
OUT4 and OUT5 output PECL or LVDS signals, as selected by the
The outputs on OUT1 ~ OUT5 are variable, depending on the signals
The outputs on OUT1 to OUT5 can be inverted, as determined by the
All the output clocks derived from T0/T4 selected input clock are
• PECL/LVDS;
• CMOS.
OUTPUT CLOCKS
E3
E3
Table 25
for the output frequency.
T3
T3
(26 MHz)
13 MHz
2
GSM
(30.72 MHz)
15.36 MHz
OBSAI
April 11, 2007
Table 24
WAN PLL
(40 MHz)
GPS
20
10
5
for