Designing Expansion Boards for the Motorola MPC555EVB/ETAS ES2000

MOTOROLA

Rev. 1, 31 July 2001

2

2.2 Peripherals On The HCE

Peripherals can also be added on to the HCE bus. Chip selects CS[2] and CS[3] are available on the

HCE connectors. In addition, CSHCE could be used if the chip timing is the same as used by the mem-

ory on the EVB555 and can fit in a 1-Mbyte memory size. Peripherals that could be added include more

serial ports, an ethernet adapter, or USB circuitry.

Table 1 Host Communication Expansion Connector

A (CO106)

B (CO107)

PIN NAME

PIN NAME

PIN NAME

PIN NAME

VCC3_3

1

••

2

VCC3_3

VCC3_3

1

••

2

VCC3_3

VCC[5]

3

••

4

VCC[5]

VSTBY3_3

3

••

4

VCC5

SDATA[31]

5

••

6

SDATA[30]

SADDR[31]

5

••

6

SADDR30

SDATA[29]

7

••

8

SDATA[28]

SADDR[29]

7

••

8

SADDR28

SDATA[27]

9

••

10

SDATA[26]

SADDR[27]

9

••

10

SADDR26

SDATA[25]

11

••

12

SDATA[24]

SADDR[25]

11

••

12

SADDR24

SDATA[23]

13

••

14

SDATA[22]

SADDR[23]

13

••

14

SADDR22

SDATA[21]

15

••

16

SDATA[20]

SADDR[21]

15

••

16

SADDR20

SDATA[19]

17

••

18

SDATA[18]

SADDR[19]

17

••

18

SADDR18

SDATA[17]

19

••

20

SDATA[16]

SADDR[17]

19

••

20

SADDR16

SDATA[15]

21

••

22

SDATA[14]

SADDR[15]

21

••

22

SADDR14

SDATA[13]

23

••

24

SDATA[12]

SADDR[13]

23

••

24

SADDR12

SDATA[11]

25

••

26

SDATA[10]

SADDR[11]

25

••

26

SADDR10

SDATA[9]

27

••

28

SDATA[8]

SADDR[9]

27

••

28

SADDR8

SDATA[7]

29

••

30

SDATA[6]

GND

29

••

30

GND

SDATA[5]

31

••

32

SDATA[4]

N/C

31

••

32

CSHCE

SDATA[3]

33

••

34

SDATA[2]

CS[0]

33

••

34

CS1

SDATA[1]

35

••

36

SDATA[0]

CS[2]

35

••

36

CS3

GND

37

••

38

GND

OE

37

••

38

RD/WE

N/C

39

••

40

N/C

N/C

39

••

40

N/C

WE/AT[0]

41

••

42

WE/AT[1]

BURST

41

••

42

BDIP

WE/AT[2]

43

••

44

WE/AT[3]

TP113

43

••

44

N/C

N/C

45

••

46

N/C

TA

45

••

46

TEA

TSIZ1

47

••

48

TSIZ0

TS

47

••

48

BI/STS

N/C

49

••

50

N/C

TP114

49

••

50

N/C

PORESET

51

••

52

SRESET

BB/VF[2]/IWP[3]

51

••

52

BR/VF[1]/IWP[2]

N/C

53

••

54

TP108

BG/VF[0]/LWP[1]

53

••

54

FRZ/PTR

TP109

55

••

56

TP110

CLKOUT

55

••

56

TP115

TP111

57

••

58

NOTES:

1. EVB555 boards (revision 1.1/1.2) can be modified by connecting pin 58 (TP112) to pin 78 (DIS) of the TI Flash

(IC400). This allows the TI Flash to be disabled and CS[0] to be useable by other devices. TP112 can then be

pulled to ground through a 2K

RN303, a spare pullup resistor, to prevent the floating input of IC403.

NOTE: these changes disable the external reset configuration word drivers on the EVB555 and may cause limita-

tions with the ETAS ETK.

TP116

57

••

58

TP117

GND

59

••

60

GND

GND

59

••

60

GND

Freescale Semiconductor, Inc.

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