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| 54HC32资料 | |
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54HC32 PDF Download |
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File Size : 116 KB
Manufacturer:TI Description:Initialization of both devices must occur before data trans- mission begins. Initialization refers to synchronization of the Serializer and Deserializer PLLs to local clocks, which may be the same or separate. Afterwards, synchronization of the Deserializer to Serializer occurs. Step 1: When you apply VCC to both Serializer and/or Dese- rializer, the respective outputs enter TRI-STATE ® , and on-chip power-on circuitry disables internal circuitry. When VCC reaches VCCOK (2.5V) the PLL in each device begins locking to a local clock. For the Serializer, the local clock is the transmit clock (TCLK) provided by the source ASIC or other device. For the Deserializer, you must apply a local clock to the REFCLK pin. The Serializer outputs remain in TRI-STATE while the PLL locks to the TCLK. After locking to TCLK, the Serializer is now ready to send data or SYNC patterns, depending on the levels of the SYNC1 and SYNC2 inputs or a data stream. The SYNC pattern sent by the Serializer consists of six ones and six zeros switching at the input clock rate. Note that the Deserializer LOCK output will remain high while its PLL locks to the incoming data or to SYNC patterns on the input. Step 2: The Deserializer PLL must synchronize to the Seri- alizer to complete initialization. The Deserializer will lock to non-repetitive data patterns. However, the transmission of SYNC patterns enables the Deserializer to lock to the Seri- alizer signal within a specified time. See Figure 9. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：54HC32 厂 家：TI 封 装：DIP 批 号：05+ 数 量：2000 说 明： |
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运 费：广东省内10元(平邮),广东省外20元(快递) 所在地：深圳市 新旧程度： |
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| 联系人：黄林锋 |
| 电 话：0755-82579969,83255343 |
| 手 机：13714599954, |
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