PEB20256EV21GXP Infineon Technologies, PEB20256EV21GXP Datasheet - Page 97
PEB20256EV21GXP
Manufacturer Part Number
PEB20256EV21GXP
Description
Manufacturer
Infineon Technologies
Datasheet
1.PEB20256EV21GXP.pdf
(232 pages)
Specifications of PEB20256EV21GXP
Operating Supply Voltage (typ)
2.5/3.3V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / Rohs Status
Compliant
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transfer, so IRDY is deasserted on clock 7, and FRAME stays asserted. Only when IRDY
is asserted can FRAME be deasserted, which occurs on clock 8.
•
Figure 5-1
5.1.2
The transaction starts when FRAME is activated (clock 1 in Figure 5-2 ). A write
transaction is similar to a read transaction except no turnaround cycle is required
following the address phase. In the example, the first and second data phases complete
with zero wait cycles. The third data phase has three wait cycles inserted by the target.
Both initiator and target insert a wait cycle on clock 5. In the case where the initiator
inserts a wait cycle (clock 5), the data is held on the bus, but the byte enables are
withdrawn. The last data phase is characterized by IRDY being asserted while the
FRAME signal is deasserted. This data phase is completed when TRDY goes active
(clock 8).
Data Sheet
DEVSEL
FRAME
TRDY
IRDY
C/BE
CLK
AD
PCI Write Transaction
PCI Read Transaction
1
Command
Address
Address
phase
2
phase
Data
3
Data 1
4
Bus transaction
97
BE's
phase
Data
5
Data 2
6
Data 3
Interface Description
phase
Data
7
PEB 20256 E
PEF 20256 E
8
04.2001
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