MPC826XAVV datasheet(32/50 Pages) FREESCALE

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MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 2.0

Freescale Semiconductor

Clock Configuration Modes

1010_001

66/33 MHz

4/8

266 MHz

88 MHz

1010_010

66/33 MHz

4/8

266 MHz

3.5

300 MHz

88 MHz

1010_011

66/33 MHz

4/8

266 MHz

350 MHz

88 MHz

1010_100

66/33 MHz

4/8

266 MHz

4.5

400 MHz

88 MHz

1011_000

66/33 MHz

4/8

266 MHz

212MHz

2.5

106 MHz

1011_001

66/33 MHz

4/8

266 MHz

2.5

265 MHz

2.5

106 MHz

1011_010

66/33 MHz

4/8

266 MHz

318 MHz

2.5

106 MHz

1011_011

66/33 MHz

4/8

266 MHz

3.5

371 MHz

2.5

106 MHz

1011_100

66/33 MHz

4/8

266 MHz

424 MHz

2.5

106 MHz

1 The frequency depends on the value of PCI_MODCK. If PCI_MODCK is high (logic ‘1’), the PCI frequency is

divided by 2 (33 instead of 66 MHz, etc.) and the CPM multiplication factor is multiplied by 2. Refer to Table 15.

2 Input clock frequency is given only for the purpose of reference. User should set MODCK_H–MODCK_L so that

the resulting configuration does not exceed the frequency rating of the user’s part.

3 Core frequency = (60x bus frequency)(core multiplication factor)

4 Bus frequency = CPM frequency/bus division factor

5 In this mode, PCI_MODCK must be “1”.

Table 19. Clock Configuration Modes in PCI Agent Mode (continued)

MODCK_H –

MODCK[1–3]

Input Clock

Frequency

(PCI)1,2

CPM

Multiplication

Factor1

CPM

Frequency

Core

Multiplication

Factor

Core

Frequency3

Bus Division

Factor

60x Bus

Frequency4

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