MPC8309CVMADFC datasheet(34/81 Pages) NXP

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MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 3

Freescale Semiconductor

PCI

11.2

PCI AC Electrical Specifications

This section describes the general AC timing parameters of the PCI bus of the MPC8309. Note that the

PCI_CLK or PCI_SYNC_IN signal is used as the PCI input clock depending on whether the MPC8309 is

configured as a host or agent device. Table 33 shows the PCI AC timing specifications at 66 MHz.

Table 34 shows the PCI AC timing specifications at 33 MHz.

Low-level output voltage

VOL

OVDD = min,

IOL = 100 A

—0.2

Input current

IIN

0 V

VIN OVDD

—

±5

A

Notes:

1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.

2. Ranges listed do not meet the full range of the DC specifications of the PCI 2.3 Local Bus Specifications.

Table 33. PCI AC Timing Specifications at 66 MHz

Parameter

Symbol1

Min

Max

Unit

Notes

Clock to output valid

tPCKHOV

—6.0

Output hold from clock

tPCKHOX

1—

Clock to output high impedance

tPCKHOZ

—14

2, 3

Input setup to clock

tPCIVKH

3.0

—

2, 4

Input hold from clock

tPCIXKH

—

2, 4

Notes:

1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for

inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tPCIVKH symbolizes PCI timing

(PC) with respect to the time the input signals (I) reach the valid state (V) relative to the PCI_SYNC_IN clock, tSYS, reference

(K) going to the high (H) state or setup time. Also, tPCRHFV symbolizes PCI timing (PC) with respect to the time hard reset

(R) went high (H) relative to the frame signal (F) going to the valid (V) state.

2. See the timing measurement conditions in the PCI 2.3 Local Bus Specifications.

3. For purposes of active/float timing measurements, the Hi-Z or off state is defined to be when the total current delivered

through the component pin is less than or equal to the leakage current specification.

4. Input timings are measured at the pin.

Table 34. PCI AC Timing Specifications at 33 MHz

Parameter

Symbol1

Min

Max

Unit

Notes

Clock to output valid

tPCKHOV

—11

Output hold from clock

tPCKHOX

2—

Clock to output high impedance

tPCKHOZ

—14

2, 3

Table 32. PCI DC Electrical Characteristics1,2

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