PEB20571 INFINEON [Infineon Technologies AG], PEB20571 Datasheet - Page 224

• Manufacturer Part Number: PEB20571
• Description: ICs for Communications
• Manufacturer: INFINEON [Infineon Technologies AG]

In fly-by mode R/W is used inverted to the normal mode, since the same signal, R/W, is
required for concurrent accesses of an external memory device.
Table 9-9
Parameter
DACK setup time to DS
falling edge
DACK hold time after DS
rising edge
D-bus setup time to DS rising
edge
D-bus hold time after DS
rising edge
DREQT/DREQR delay after
DS falling edge
R/W setup time to DS falling
edge
R/W hold time after DS rising
edge
DS pulse width and interval
between DS pulses
D-bus valid after DS falling
edge
D-bus float (high impedance)
after DS rising edge
Preliminary Data Sheet
DMA Transaction timing in Mototrola Mode
Symbol
t
t
t
t
t
t
t
t
t
t
SAS
HSA
SDS
HSD
DSR
SRWS
HSRW
WS
DSDV
DSDT
min.
7
5
5
10
0
7
5
30
0
0
9-10
Limit Values
max.
36
22
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Timing Diagrams
Test
Conditions
Output load
capacity of
50 pF
DELIC
2003-08