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PC97307 데이터시트(PDF) 203 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
부품명 PC97307
상세설명  PC87307/PC97307 Plug and Play Compatible and PC97 Compliant SuperI/O
PDF  218 Pages
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제조업체  NSC [National Semiconductor (TI)]
홈페이지  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC97307 데이터시트(HTML) 203 Page - National Semiconductor (TI)

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Device Description
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TABLE 13-46. ECP DMA Timing
FIGURE 13-16. ECP DMA Timing
a. One DMA transaction takes six clock cycles.
b. tCP is defined in Table 13-35.
c. Only in case of pending DRQ.
d. The active edge of RD or WR and TC is recognized only when DACK is active.
Symbol
Parameter
Min
Max
Unit
tKIP
DACK Inactive Pulse Width
25
nsec
tKKP
DACK Active Pulse Width
65
nsec
tKQP
DACK Active Edge to DRQ Inactive ab
65 + (6 x 32 x tCP)
nsec
tQKP
DRQ to DACK Active Edge
10
nsec
tQPP
DRQ Period
330
nsec
tQQP
DRQ Inactive Non-Burst Pulse Width
300
400 c
nsec
tQRP
DRQ to RD, WR Active
15
nsec
tRQP
RD, WR Active Edge to DRQ Inactive d
65
nsec
tTQP
TC Active Edge to DRQ Inactive
75
nsec
tTT
TC Active Pulse Width
50
nsec
tQKP
tKQP
tQPP
tTT
tKKP
tQRP
tQQP
tKIP
tRQP
tTQP
DRQ
DACK
RD, WR
TC



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