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參數(shù)資料
| 型號(hào)： | IDT82V3001A |
| 廠商： | Integrated Device Technology, Inc. |
| 英文描述： | WAN PLL WITH SINGLE REFERENCE INPUT |
| 中文描述： | 廣域網(wǎng)鎖相環(huán)單參考輸入 |
| 文件頁數(shù)： | 10/27頁 |
| 文件大?。?/td> | 345K |
| 代理商： | IDT82V3001A |
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10
IDT82V3001A WAN PLL WITH SINGLE REFERENCE INPUT INDUSTRIAL TEMPERATURE RANGE
3
FUNCTIONAL DESCRIPTION
The IDT82V3001A is a WAN PLL with single reference input,
providing timing (clock) and synchronization (framing) signals to
interface circuits for T1 and E1 Primary Rate Digital Transmission links.
See
Figure - 1
. The detail is described in the following sections.
3.1
STATE CONTROL CIRCUIT
The State Control Circuit is an important part of the IDT82V3001A.
As shown in
Figure - 3
, the State Control Circuit outputs signals to
enable/disable the TIE Control Block and control the operation mode of
the DPLL Block based on MODE_sel0 and MODE_sel1 and TIE_en
pins.
Figure - 3 State Control Block
The IDT82V3001A has three possible modes of operation: Normal,
Holdover and Freerun. The mode selection pins, MODE_sel1 and
MODE_sel0 select the operation mode. See
Table - 2
.
All state control changes occur synchronously on the rising edge of
F8o. As shown in
Figure - 4
, the operating mode can be changed from
one to another by the MODE_sel0 and MODE_sel1 pins, except the
mode changes between Normal (S1) and Auto-Holdover (S2). The
mode changes between Normal (S1) and Auto-Holdover (S2) are
triggered by the Invalid Input Reference Detection Circuit and irrelative
to the MODE_sel0 and MODE_sel1 pins. That is, at the stage of S1, the
operating mode will be changed automatically from Normal (S1) to Auto-
Holdover (S2) if an invalid input reference is detected (input reference is
out of the capture range). If the input reference becomes valid (within
the capture range), the operating mode will be changed back to Normal
(S1) automatically.
When the operating mode is changed from one to another, the TIE
control block will be disabled automatically as shown in
Figure - 4
,
except the change from Holdover (S3) or Auto-Holdover (S2) to Normal
(S1). In the case of changing from Holdover (S3) or Auto-Holdover (S2)
to Normal (S1), the TIE control block can be manually enabled or
disabled by the TIE_en pin, as required.
Table - 2 Operating Modes and Status
MODE_sel1
MODE_sel0
Mode
0
0
Normal
0
1
Holdover
1
0
Freerun
1
1
Reserved
State Control Circuit
MODE_sel1
MODE_sel0
TIE_en
Output of the
Invalid Input
Signal Detection
F8o
TIE Block
Enable/Disable
DPLL Block
Mode Control
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| IDT82V3001A_08 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL WITH SINGLE REFERENCE INPUT |
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| IDT82V3001APVG | 功能描述:IC PLL WAN W/SGL REF INP 56SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/頻率發(fā)生器，多路復(fù)用器 PLL:是 主要目的:存儲(chǔ)器，RDRAM 輸入:晶體 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:1:2 差分 - 輸入:輸出:無/是 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:Digi-Reel® 其它名稱:296-6719-6 |
| IDT82V3001APVG8 | 功能描述:IC PLL WAN W/SGL REF INP 56-SSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 專用 系列:- 標(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時(shí)鐘緩沖器/驅(qū)動(dòng)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(yīng)商設(shè)備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| IDT82V3002A | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:WAN PLL WITH DUAL REFERENCE INPUTS |
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