pc87317vul National Semiconductor Corporation, pc87317vul Datasheet - Page 255

• Manufacturer Part Number: pc87317vul
• Description: Pc87317vul/pc97317vul Superi/o Plug And Play Compatible With Acpi Compliant Controller/extender
• Manufacturer: National Semiconductor Corporation

DRQ
AEN
DACK
RD, WR
TC
t
t
t
t
tDSW
t
t
t
ACH
ACS
DCH
DCS
RQ
TCH
TCS
Symbol
AEN Hold from RD, WR Inactive
AEN Signal Setup
DACK Hold from RD, WR Inactive
DACK Signal Setup
RD, WR Pulse Width
DRQ Inactive from RD, WR Active
TC Hold from RD, WR Inactive
TC Signal Setup
t
ACS
t
DCS
FIGURE 14-16. UART2 DMA Timing
TABLE 14-53. UART2 DMA Timing
Parameter
Device Specifications
t
RQ
255
t
DSW
t
TCS
Min
15
15
60
60
5
0
2
t
TCH
t
DCH
t
ACH
1000
Max
60
nsec
nsec
nsec
nsec
nsec
nsec
nsec
nsec
Unit
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