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ML6652 数据表(PDF) 6 Page - Micro Linear Corporation |
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ML6652 数据表(HTML) 6 Page - Micro Linear Corporation |
6 / 28 page ML6652 6 January 2002 Preliminary Datasheet Note: The ML6652 fiber interface quantizer sensitivity can be adjusted via Register 30 bits 5, 6 and 7 to accomodate various cable lengths and signal intensity. 25 DUPLEX I This input can have one of three levels: VCC, VCC/2 or 0 Volts. This input has 80K ohm resistors internally connected to both VCC and Ground, generating VCC/2 at the input if left unconnected. Settings defined by the DUPLEX power up preset pin can be over written by the management interface. At power up the DUPLEX pin causes the following default values to be written to management register 30. Note: this pin is typically read a few microseconds after power-up, if it is tied to supplies that do not track the ML6652 power improper results will occur. Use VCCD (pin 19) as the pull up point, do not add decoupling capacitors to this input pin (without thoroughly understanding your PCB layout dynamics the safest course is to make short connections and do not add decoupling capacitors to this input pin). Pin No. Signal Name I/O Description 8 PECLQU I The fiber interface is selected as shown in Table 3. When using an LED driver and fiber optic receiver, this pin also defines the maximum supported link distance. When the 300m maximum link length is selected, the voltage thresholds for Signal Detect are increased. PIN DESCRIPTIONS (continued) U Q L C E P t a s e c a f r e t n I d n a N N I O F / P N I O F # T U O I / T U O I U Q L C E P > 7 . 0 3 < t l u a f e D c i t p O r e b i F h t g n e L k n i L e s a B 0 0 1 / e s a B 0 1 O F T R O H S > 5 . 0 3 < t l u a f e D h t g n e L e v a W L W G N O L > 6 . 0 3 < t l u a f e D 0 D E L d n a r e z i t n a u Q r e v i r D 0m 0 0 3 / m K 20 m n 0 5 80 C C V f o 3 / 1L C E P V L / L C E P1 s e c a r T B C P0 A N0 C C V f o 3 / 2 D E L d n a r e z i t n a u Q r e v i r D 0m K 2 / m K 20 m n 0 0 3 11 C C V D E L d n a r e z i t n a u Q r e v i r D 0m 0 0 3 / m 0 0 31 m n 0 0 3 1 r o 0 5 80 Table 3. Table 4. e g a t l o V X E L P U D # T N E R A P S N A R T t l u a f e D > 1 1 . 0 3 < # D F T R E V D A t l u a f e D > 0 1 . 0 3 < # D H T R E V D A t l u a f e D > 5 1 . 0 3 < 01 1 0 2 / C C V0 0 0 C C V1 0 0 |
类似零件编号 - ML6652 |
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类似说明 - ML6652 |
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