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參數(shù)資料
| 型號： | AK2500 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | DS3/STS-1 Analog Line Receiver |
| 中文描述： | DS3/STS-1模擬線路接收器 |
| 文件頁數(shù)： | 4/17頁 |
| 文件大?。?/td> | 78K |
| 代理商： | AK2500 |
ASAHI KASEI
[AK2500B]
MS0005-E-00
- 4 -
1999/12
PIN DESCRIPTION
No.
Pin Name
I/O
Function
1
IREF
O
Current reference output determined by the external resister.
External resistance 4.9 kohm(+/-1%) should be connected between this pin and
VSSA.
Loss of Signal Threshold Control
The voltage forced on this pin controls the input loss-of-signal threshold. Three
settings are provided by forcing GND, VDD/2, or VDD at LOSTHR (see
Table
6
).
Receive PLL Loss-of-Lock
Active High alarm. If the recovered clock frequency is larger than approximately
0.5% of EXCLK, RLOL alarm goes High.
Receive Input
Unbalanced analog receive input. The B3ZS receive signal is input to this pins.
Data and clock are recovered and output on RPDATA, RNDATA and RCLK.
2
LOSTHR
I
3
RLOL
O
4
RIN
I
5
VDDA
-
6
VDDA
-
Power Supply for the analog part.
+3.3 volts.
7
RESET
I
Active low RESET.
Pulled up to VDD with internal resister.
Bottom voltage reference level output.
An external capacitor (0.1
u
F±20%) should be connected between this pin and
VSSA.
Top voltage reference level output.
An external capacitor (0.1
u
F±20%) should be connected between this pin and
VSSA.
Ground for the analog part.
0 volts.
8
BREF
O
9
TREF
O
10
VSSA
-
11
VSSD
-
Ground for the digital part.
0 volts.
Receive Loss-of-Signal.
This pin is set high on loss of the incoming signal at RIN.
External Reference Clock.
A valid DS3 or STS-1 clock must be provided at this input. The duty cycle of
EXCLK, referenced to VDD/2 levels, must be 40% - 60%. The EXCLK
frequency determines the operating frequency of the device.
Power Supply for the digital part.
+3.3 volts
12
RLOS
O
13
EXCLK
I
14
VDDD
-
15
VDDA
-
Power Supply for the analog part.
+3.3 volts.
16
VDDC
-
Power Supply for the output buffer.
+3.3 volts.
17
RCLK
O
Recovered Clock.
18
RNDATA
O
Receive Negative Data.
19
RPDATA
O
Receive Positive Data.
20
VSSC
-
Ground for the output buffer.
0 volts.
21
VSSA
-
22
VSSA
-
Ground for the analog part.
0 volts.
23
MODE1
I
24
MODE2
I
Mode Control.
Equalizer enable/bypass mode, Test mode are selectable as shown in
Table 4.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK2500B | 制造商:AKM 制造商全稱:AKM 功能描述:DS3/STS-1 Analog Line Receiver |
| AK250-3 | 功能描述:CABLE NULL MODEM DB25M TO DB25M RoHS:否 類別:電纜組件 >> D-Sub 系列:- 標準包裝:1 系列:- 第一連接器:公形引腳插頭 第二連接器:公形引腳插頭 類型:高密度（HD） 位置數(shù):68 長度:12.0'（3.66m） 屏蔽:屏蔽 顏色:米灰，雙絞線（圓形） 使用:SCSI III 觸點表面涂層:- 觸點涂層厚度:- |
| AK250-3-R | 功能描述:CABLE NULL MODEM DB25M TO DB25M RoHS:是 類別:電纜組件 >> D-Sub 系列:- 產(chǎn)品目錄繪圖:A7MM, M7PP,M7VV Series 標準包裝:1 系列:- 第一連接器:公形引腳插頭 第二連接器:公形引腳插頭 類型:DB25 位置數(shù):25 長度:6.0'（1.83m） 屏蔽:無屏蔽 顏色:多色，帶狀 使用:跳線 觸點表面涂層:金 觸點涂層厚度:30µin（0.76µm） 產(chǎn)品目錄頁面:28 (CN2011-ZH PDF) |
| AK2504 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Interface IC |
| AK2504A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:DS3/STS-1/ES Transceiver |
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