Freescale Semiconductor, Inc.

Operating Instructions

FIGURE 4-4 Switch SW9 MODCK - Description

Semiconductor, Inc.

HOST

CFG

FCFG

MODCK6

MODCK5

MODCK4

MODCK3

MODCK2

MODCK1

Set to ‘0’ <=

SW9

ON

8

7

6

5

4

3

2

1

=> Set to ’1’

Freescale

TABLE 4-1. Available Clock Mode Setting

 

 

MODCK-

 

 

Clock

Clock In

CPM

PPC Bus

SC140 Core

 

 

 

 

 

 

-1

-2

-3

-4

-5

-6

Mode

MHz

MHz

MHz

MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

1

1

1

1

57a

55

137.5

55a

275

0

0

1

0

0

1

9b

20

200

100

300

a. Factory setting.

b. Alternative clock mode for 100MHz bus frequency requires clock oscillator 20MHz

4•2•9 Boot Mode Select - SW10

SW10 is a 4-switch Dip-Switch with three poles in use. This switch selects Boot Mode over Altera FPGA on the Processor inputs EE0, EE4, EE5 during Power-On reset sequence. Setting SW10/1 (DBG) to ON brings holding EE0 at logic 1 during reset that puts the SC140 core into DEBUG MODE. In doing so BTM’s switch position will be ignored. See TABLE 5-1 on page 40 for more explanation. SW10 is factory set to all ON.

MOTOROLA

MSC8101ADS RevB User’s Manual

29

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Page 29
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Nortel Networks MSC8101 ADS user manual Available Clock Mode Setting, Boot Mode Select SW10, Modck, Cpm