PRIXP425BB Intel, PRIXP425BB Datasheet - Page 107

• 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

Datasheet
5.5.2.7.1
5.5.2.8
Figure 34.
EX_IOWAIT_N
The EX_IOWAIT_N signal is available to be shared by devices attached to Chip Selects 0 through
7 and is used as required by slow devices.
If the external device asserts EX_IOWAIT_N during the strobe phase of a read transfer, the
controller will hold in that phase until the EX_IOWAIT_N goes false. At that time, the controller
will immediately transition to the hold phase regardless of the setting of the programming
parameter (T3) for the strobe phase.
The EX_IOWAIT_N signal only affects the interface during the strobe phase of a read transfer. If
Chip Selects 4 through 7 are configured in HPI mode of operation, each chip select will have a
corresponding HRDY signal called EX_RDY. The polarity of the ready signal is programmable.
Chip Select 4 corresponds to EX_RDY signal 0 and Chip Select 7 corresponds to EX_RDY signal
3.
High-Speed, Serial Interfaces
High-Speed, Serial Timings
hss_(tx or rx)frame
hss_(tx or rx)frame
hss_(tx or rx)frame
hss_(tx or rx)frame
(Negative edge)
(Negative edge)
(Negative edge)
(Negative edge)
(Positive edge)
(Positive edge)
(Positive edge)
(Positive edge)
As Outputs:
hss_ rxdata
hss_ rxdata
hss_ txdata
hss_ txdata
As Inputs:
hss_rxclk
hss_txclk/
1
Intel
®
IXP42X Product Line and IXC1100 Control Plane Processor
T5
T1
T6
Valid Data
Valid Data
T3
T7
Valid Data
Valid Data
T2
T4
T8
Electrical Specifications
T9
A9594-01
107