PRIXP425BB Intel, PRIXP425BB Datasheet - Page 95
PRIXP425BB
Manufacturer Part Number
PRIXP425BB
Description
IC NETWRK PROCESSR 266MHZ 492BGA
Manufacturer
Intel
Specifications of PRIXP425BB
Processor Type
Network
Features
XScale Core
Speed
266MHz
Voltage
1.3V
Mounting Type
Surface Mount
Package / Case
492-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
869046
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Table 53.
Figure 27.
Intel Simplex Mode Values
NOTES:
Motorola* Multiplexed Mode
1. EX_ALE is not valid in simplex mode of operation.
2. Setting the address phase parameter (T1) will adjust the duration that the address appears to the external
3. Setting the data setup phase parameter (T2) will adjust the duration that the data appears prior to a data
4. Setting the data strobe phase parameter (T3) will adjust the duration that the data strobe appears (read or
5. Setting the data hold strobe phase parameter (T4) will adjust the duration that the chip selects, address, and
6. Setting the recovery phase parameter (T5) will adjust the duration between successive accesses on the
7. One cycle is the period of the Expansion Bus clock.
8. Clock to output delay for all signals will be a maximum of 15 ns for devices requiring operation in
9. Timing tests were performed with a 70-pF capacitor to ground.
Symbol
T
T
T
device.
strobe (read or write) to an external device.
write) to an external device. Data will be available during this time as well.
data (during a write) will be held.
expansion interface.
synchronous mode.
dholdafterwr
addr2valcs
dval2valwrt
T
T
T
T
wrpulse
rdsetup
rdhold
recov
(exp_mot_ds_n)
(exp_mot_ds_n)
(exp_mot_rnw)
(exp_mot_rnw)
EX_WR_N
EX_WR_N
EX_ADDR
EX_RD_N
EX_RD_N
Parameter
Valid address to valid chip select
Write data valid prior to EXPB_IO_WRITE_N falling edge
Pulse width of the EXP_IO_WRITE_N
Valid data after the rising edge of EXPB_IO_WRITE_N
Data valid required before the rising edge of
EXP_IO_READ_N
Data hold required after the rising edge of
EXP_IO_READ_N
Time required between successive accesses on the
expansion interface.
EX_CS_N
EX_DATA
EX_DATA
EX_CLK
EX_ALE
Intel
®
IXP42X Product Line and IXC1100 Control Plane Processor
T alepulse T ale2valcs
ALE Extended
Address
2-5 Cycles
Address
Multiplexed Address/Data
T1
T ale2addrhold
T dval2valds
1-4 Cycles
T2
Valid Address
1-16 Cycles
Output Data
T dspulse
T rdsetup
T3
Input Data
T dhold2afterds
1-4 Cycles
T4
T rdhold
Min.
Electrical Specifications
5.3
1
1
1
1
2
1
1-16 Cycles
T recov
T5
Max.
14.7
16
16
4
4
4
A9587-01
Units
Cycles
Cycles
Cycles
Cycles
Cycles
ns
ns
Notes
1, 2,
3,
4,
5,
6
7
7
7
95
7
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