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參數(shù)資料
| 型號： | AK2548 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 7 channel E1 Transceiver |
| 中文描述： | 7頻道E1收發(fā)器 |
| 文件頁數(shù)： | 8/30頁 |
| 文件大?。?/td> | 158K |
| 代理商： | AK2548 |
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ASAHI K ASEI [AK2548]
C0028-E-00 1999/9
Pin Name
I/O
Function
Comment
Common Block
CLKSEL
I
MCLK Select Input
CLKSEL=“H”:2.048MHz
CLKSEL=“L”:34.768MHz
P/S
I
Parallel/Serial Port Select
P/S=“H”: Serial Port is selected
P/S=“L”: Parallel Port is selected
RESET
I
Reset Input
Active “Low” input pulse over 200ns initializes the internal circuit
and forces RPOSx/RNEGx output “l(fā)ow” and LOSx output “high”.
TEST1,2,3,4
I
Factory Use. Should be connected to VSS externally.
TAVDD1,2
Positive Power Supply for the analog circuitry in the transmitters
TAVSS1,2
Negative Power Supply for the analog circuitry in the transmitters
RAVDD1,2
Positive Power Supply for the analog circuitry in the receivers
RAVSS1,2
Negative Power Supply for the analog circuitry in the receivers
DVDD1,2
Positive Power Supply for Digital
DVSS1,2
Negative Power Supply for Digital
DAVSS1,2
Ground for Digital
IOVDD1,2
Positive Power Supply for I/O
IOVSS1,2
Negative Power Supply for I/O
BVDD
Positive Power Supply for Reference Circuit
BVSS
Negative Power Supply for Reference Circuit
PVDD
Positive Power Supply for PLL
PVSS
Negative Power Supply for PLL
BGREF
Bandgap Reference Output.
12k
±
1% exeternal register should be connected across this pin and
VSS.
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| AK2573A | 制造商:AKM 制造商全稱:AKM 功能描述:125M / 156M Laser Diode Driver + APC |
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