PRIXP425BB Intel, PRIXP425BB Datasheet - Page 104
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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Intel
Electrical Specifications
Table 61.
Figure 32.
104
®
IXP42X Product Line and IXC1100 Control Plane Processor
HPI-16 Non-Multiplex Read Accesses Values
NOTES:
HPI-16 Non-Multiplex Read Mode
1. The address phase parameter (T1) must be set to a minimum value of 2. This value allows three T clocks for
2. The data setup phase parameter (T2) must be set to a minimum value of 2. This value allows three T clocks
3. The data strobe phase parameter (T3) must be set to a minimum value of 1. This value allows two T clocks
4. Setting the recovery phase parameter (T5) will adjust the duration between successive accesses on the
5. HRDY can be asserted by the DSP at any point in the access. The interface will not leave states T1 or T3
6. One cycle is the period of the Expansion Bus clock.
7. Timing tests were performed with a 70-pF capacitor to ground.
T
T
T
T
EX_ADDR[23:0]
Symbol
cs2hds1val
hds1_pulse
the address phase. This setting is required to ensure that in the event of an HRDY, the Intel
Line and Intel
the address phase for at least one clock pulse after the HRDY is de-active.
for setup phase.
for the data phase. This setting is required to ensure that in the event of an HRDY, the Intel
Line and Intel
the data setup phase for at least one clock pulse after the HRDY is de-active
Expansion Bus interface.
until HRDY is de-active
data_setup
add_setup
T
recov
EX_RDY_N
EX_WR_N
EX_CS_N
EX_RD_N
EX_DATA
(hds1_n)
(hr_w_n)
EX_CLK
(hcs_n)
(hdout)
(hrdy)
Tcs2hds1val
(ha)
Valid time that address is asserted on the line. The address is
asserted at the same time as chip select.
Delay from chip select being active and the HDS1 data strobe
being active.
Pulse width of the HDS1 data strobe
Data is valid from the time from of the falling edge of HDS1_N
to when the data is read.
Time required between successive accesses on the
expansion interface.
®
®
IXC1100 Control Plane processors has had sufficient time to recognize the HRDY and hold
IXC1100 Control Plane processors has had sufficient time to recognize the HRDY and hold
T1
T2
Thds1_pulse
Parameter
Tdata_setup
Valid
Tadd_setup
T3
Valid Data
T4
Trecov
T5
T1
Min.
11
3
4
4
2
Max.
45
17
4
5
5
T2
Valid
®
®
Cycles
Cycles
Cycles
Cycles
Cycles
Units
IXP4XX Product
IXP4XX Product
Valid Data
Datasheet
T3
1, 5, 6
5, 6
2, 4, 5
3, 5, 6
4, 6
Notes
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