GWIXC1100BCT datasheet(106/134 Pages) INTEL

106 / 134 page

Intel® IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor

March 2005

Datasheet

106

Document Number: 252479, Revision: 005

Table 55.

Intel Simplex Mode Values

Symbol

Parameter

Min.

Max.

Units

Notes

Taddr2valcs

Valid address to valid chip select

Cycles

1, 2, 7

Tdval2valwrt

Write data valid prior to EX_WR_N falling edge

Cycles

3, 7

Twrpulse

Pulse width of the EX_WR_N

Cycles

4, 7

Tdholdafterwr

Valid data after the rising edge of EX_WR_N

Cycles

5, 7

Trdsetup

Data valid required before the rising edge of EX_RD_N

Trdhold

Data hold required after the rising edge of EX_RD_N

Trecov

Time required between successive accesses on the

expansion interface.

Cycles

Notes:

EX_ALE is not valid in simplex mode of operation.

Setting the address phase parameter (T1) will adjust the duration that the address appears to the

external device.

Setting the data setup phase parameter (T2) will adjust the duration that the data appears prior to a

data strobe (read or write) to an external device.

Setting the data strobe phase parameter (T3) will adjust the duration that the data strobe appears

(read or write) to an external device. Data will be available during this time as well.

Setting the data hold strobe phase parameter (T4) will adjust the duration that the chip selects,

address, and data (during a write) will be held.

Setting the recovery phase parameter (T5) will adjust the duration between successive accesses on

the expansion interface.

One cycle is the period of the Expansion Bus clock.

Clock to output delay for all signals will be a maximum of 15 ns for devices requiring operation in

synchronous mode.

Timing tests were performed with a 70-pF capacitor to ground.

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