PC8260VTPU150 datasheet(40/53 Pages) ATMEL

Part #	PC8260VTPU150

Description	PowerPC-based Communications Processors

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Manufacturer	ATMEL [ATMEL Corporation]

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PC8260 PowerQUICC II

2131B–HIREL–02/03

AC Electrical Specifications

Included in this section are illustrations and tables of clock diagrams, signals, and CPM

outputs and inputs. Note that AC timings are based on a 50 pF load. Typical output

buffer impedances are shown in Table 9.

Note:

These are typical values at 65°C. The impedance mayvary by ±25% with processand

temperature.

Although the specifications generally refer to the rising edge of the clock, the following

AC timing diagrams also apply when the falling edge is the active edge.

Figure 4. FCC External Clock Diagram

Figure 5. FCC Internal Clock Diagram

Table 9. Output Buffer Impedances

Output Buffers

Typical Impedance (

Ω)

60x bus

40

Local bus

40

Memory Controller

40

Parallel I/O

46

PCI

25

FCC Output Signals

FCC Input Signals

sp36b/sp37b

sp17b

sp16b

Serial CLKin

FCC Output Signals

FCC Input Signals

sp36a/sp37a

sp17a

sp16a

BRG_OUT

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PC8260VTPU150 Datasheet(PDF) 40 Page - ATMEL Corporation

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