參數(shù)資料
型號: IDT82V3355TFG8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 35/135頁
文件大小: 0K
描述: IC PLL WAN SYNC ETH 64-TQFP
標(biāo)準(zhǔn)包裝: 1,250
類型: 時鐘/頻率發(fā)生器,多路復(fù)用器
PLL:
主要目的: 以太網(wǎng),SONET/SDH,Stratum
輸入: CMOS,LVDS,PECL
輸出: CMOS,LVDS,PECL
電路數(shù): 1
比率 - 輸入:輸出: 3:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 622.08MHz
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(10x10)
包裝: 帶卷 (TR)
其它名稱: 82V3355TFG8
IDT82V3355
SYNCHRONOUS ETHERNET WAN PLL
Pin Description
13
May 19, 2009
2
PIN DESCRIPTION
Table 1: Pin Description
Name
Pin No.
I/O
Type
Description 1
Global Control Signal
OSCI
6
I
CMOS
OSCI: Crystal Oscillator Master Clock
A nominal 12.8000 MHz clock provided by a crystal oscillator is input on this pin. It is the
master clock for the device.
FF_SRCSW
13
I
pull-down
CMOS
FF_SRCSW: External Fast Selection Enable
During reset, this pin determines the default value of the EXT_SW bit (b4, 0BH) 2. The
EXT_SW bit determines whether the External Fast Selection is enabled.
High: The default value of the EXT_SW bit (b4, 0BH) is ‘1’ (External Fast selection is
enabled);
Low: The default value of the EXT_SW bit (b4, 0BH) is ‘0’ (External Fast selection is dis-
abled).
After reset, this pin selects an input clock pair for the T0 DPLL if the External Fast selection is
enabled:
High: Pair IN1_CMOS / IN1_DIFF is selected.
Low: Pair IN2_CMOS / IN2_DIFF is selected.
After reset, the input on this pin takes no effect if the External Fast selection is disabled.
SONET/SDH
64
I
pull-down
CMOS
SONET/SDH: SONET / SDH Frequency Selection
During reset, this pin determines the default value of the IN_SONET_SDH bit (b2, 09H):
High: The default value of the IN_SONET_SDH bit is ‘1’ (SONET);
Low: The default value of the IN_SONET_SDH bit is ‘0’ (SDH).
After reset, the value on this pin takes no effect.
RST
48
I
pull-up
CMOS
RST: Reset
A low pulse of at least 50 s on this pin resets the device. After this pin is high, the device will
still be held in reset state for 500 ms (typical).
Frame Synchronization Input Signal
EX_SYNC1
28
I
pull-down
CMOS
EX_SYNC1: External Sync Input 1
A 2 kHz, 4 kHz or 8 kHz signal is input on this pin.
EX_SYNC2
33
I
pull-down
CMOS
EX_SYNC2: External Sync Input 2
A 2 kHz, 4 kHz or 8 kHz signal is input on this pin.
EX_SYNC3
35
I
pull-down
CMOS
EX_SYNC3: External Sync Input 3
A 2 kHz, 4 kHz or 8 kHz signal is input on this pin.
Input Clock
IN1_CMOS
29
I
pull-down
CMOS
IN1_CMOS: Input Clock 1
A 2 kHz, 4 kHz, N x 8 kHz 3, 1.544 MHz (SONET) / 2.048 MHz (SDH), 6.48 MHz, 19.44 MHz,
25.92 MHz, 38.88 MHz, 51.84 MHz, 77.76 MHz or 155.52 MHz clock is input on this pin.
IN2_CMOS
30
I
pull-down
CMOS
IN2_CMOS: Input Clock 2
A 2 kHz, 4 kHz, N x 8 kHz 3, 1.544 MHz (SONET) / 2.048 MHz (SDH), 6.48 MHz, 19.44 MHz,
25.92 MHz, 38.88 MHz, 51.84 MHz, 77.76 MHz or 155.52 MHz clock is input on this pin.
IN1_POS
IN1_NEG
23
24
I
PECL/LVDS
IN1_POS / IN1_NEG: Positive / Negative Input Clock 1
A 2 kHz, 4 kHz, N x 8 kHz 3, 1.544 MHz (SONET) / 2.048 MHz (SDH), 6.48 MHz, 19.44 MHz,
25.92 MHz, 38.88 MHz, 51.84 MHz, 77.76 MHz, 155.52 MHz, 156.25 MHz, 311.04 MHz or
622.08 MHz clock is differentially input on this pair of pins. Whether the clock signal is PECL
or LVDS is automatically detected.
Single-ended input for differential input is also supported. Refer to Chapter 8.3.2.3 Single-
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