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0000915.595.

Vendor: 5
Package Cooled: NSC
D/C: 00+

Description

The operation mode of the M5M51008C series are determined by a combination of the device control inputs S1,S2,W and OE. Each mode is summarized in the function table. A write cycle is executed whenever the low level W overlaps with the low level S1 and the high level S2. The address must be set up before the write cycle and must be stable during the entire cycle. The data is latched into a cell on the trailing edge of W,S1 or S2, whichever occurs first,requiring the set-up and hold time relative to these edge to be maintained. The output enable input OE directly controls the output stage. Setting the OE at a high level, the output stage is in a high-impedance state, and the data bus contention problem in the write cycle is eliminated. A read cycle is executed by setting W at a high level and OE at a low level while S1 and S2 are in an active state(S1=L,S2=H).

Applications

The Receive analog power amplifier output, capable of driving load impedances as low as 300Ω (depending on the peak overload level required). PCM data received on the assigned DR pin is decoded and appears at this output as voice frequency signals.

Features

In central office, servers and other infrastructure systems, a common backplane dc supply is reduced to multiple board supplies using dc/dc converters. These multiple supplies are used to power different sections of the board (eg) 3.3V Logic circuits, 5V logic circuits, DSP core and I/O circuits etc. There is usually a requirement that cer- tain sections power up before others (eg) a DSP core to power up before the DSP I/O or vice versa. This is in order to avoid damage, miscommunication or latch- up. The 0000915.595. facilitates this, providing supply fault detection and sequencing/combinatorial logic for up to 7 independent supplies. The 7 Supply Fault Detectors con- sist of one high voltage detector (up to +14.4V), two bi- polar voltage detectors (up to +6V OR down to -6V) and 4 positive low voltage detectors (up to +6V). All of the detectors can be programmed to detect undervoltage, ov- ervoltage or out- of window (undervoltage OR overvolt- age) conditions. The inputs to these Supply Fault Detectors are via the VH pin (High Voltage), VBn pins (positive OR negative) and VPn pins (Positive only) pins respectively. Either the VH supply or one of the VPn supplies is used to power the 0000915.595. (whichever is highest). This ensures that, in the event of a supply fail- ure, the 0000915.595. is kept alive for as long as possible, thus enabling a reliable fault flag to be asserted and the system to be powered down in an ordered fashion.

Supplier

  • Part Name
  • Q'ty
  • Description
  • Vendor
  • Date Code
  • Date
  • Quotation
  • 0000006K9223
  • 800
  • 绝对有货,欢迎查询
  • IBM
  • 02+
  • 2017-10-17

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