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LM4560 데이터시트(PDF) 51 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 LM4560
상세설명  Advanced PCI Audio Accelerator
PDF  54 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4560 데이터시트(HTML) 51 Page - National Semiconductor (TI)

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4.0 Functional Description (Continued)
Present
State
Next
State
State Change Way
D0
D1
HIFW
D2 or
D1
D0
HIFW
Present
State
Next
State
State Change Way
D0
D2
HIFW
D2
D3
HIFW or Inactivity Timer expires
D0
D3
HIFW
5.1.2 Timing
The timing descriptions of host interface signals. All signal’s transition edges are respected to the rising edge of PCICLK. The
setup time and hold time requirements are illustrated in
Figure 4.
5.1.2.1 Slave Read/Write Timing
Slave read/write means that host performs I/O read/write operation to audio block while audio block acts as a bus slave. Data
transition occurs at the rising edge of PCICLK while both chip select signal and DATARDY are active. They are two-clock wait
states from chip select signal and DATARDY.
Timing diagram are printed into file: sl_io_rd.ps and sl_io_wr.ps .
5.1.2.2 Master Read/Write
There’s one clock wait state of IRDY which means: 1) IRDY can be asserted in 2 clocks after FRAME is asserted; 2) IRDY has
to be de-asserted for 1 clock after each of data transferring.
Timing
diagram
are
printed
into
file:
ma_mem_rd1.ps,
ma_memrd2.ps,
ma_mem_rd3.ps,
ma_mem_wr2.ps
and
ma_mem_wr3.ps.
DS100910-5
FIGURE 4. Setup Time and Hold Time of All Signals
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