參數(shù)資料
型號： IDT82V3255
廠商： Integrated Device Technology, Inc.
英文描述： WAN PLL
中文描述： 廣域網(wǎng)鎖相環(huán)
文件頁數(shù)： 13/127頁
文件大小： 868K
代理商： IDT82V3255
IDT82V3255
WAN PLL
Pin Description
13
June 19, 2006
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: 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.
FF_SRCSW
13
I
pull-down
CMOS
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 μs 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
I
pull-down
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: External Sync Input 2
A 2 kHz, 4 kHz or 8 kHz signal is input on this pin.
EX_SYNC3: External Sync Input 3
A 2 kHz, 4 kHz or 8 kHz signal is input on this pin.
EX_SYNC2
33
CMOS
EX_SYNC3
35
CMOS
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: 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: 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, 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.
IN2_POS / IN2_NEG: Positive / Negative 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, 155.52 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.
IN2_CMOS
30
I
pull-down
CMOS
IN1_POS
IN1_NEG
23
24
I
PECL/LVDS
IN2_POS
IN2_NEG
25
26
I
PECL/LVDS
相關PDF資料
PDF描述
IDT82V3255DK WAN PLL
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相關代理商/技術參數(shù)
參數(shù)描述
IDT82V3255_08 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL
IDT82V3255DK 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL
IDT82V3255DKG 功能描述:IC PLL WAN SMC STRATUM 3 64-TQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT
IDT82V3255DKG8 功能描述:IC PLL WAN SMC STRATUM 3 64-TQFP RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT
IDT82V3255EDGBLANK 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL
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