Siemens SPC3 manual Asynchronous Motorola-Mode, Processor-Read-Timing, XCS Xdsack

Models: SPC3

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SPC3

PROFIBUS Interface Center

 

 

 

 

 

 

T

=

Pulse cycle (48MHz)

TBD

=

To Be Defined

(1

=

Access to the RAM

 

(2

=

Access to the register/latches

 

(3

=

For T = 48MHz

 

Asynchronous Motorola-Mode, Processor-Read-Timing

AB(10..0)

VALID

 

 

 

60

61

62

 

 

DB(7..0)

 

 

Data Out

 

 

 

65

 

63

 

64

AS

 

66

 

 

 

R_W

 

 

67

 

 

 

77

68

 

 

XCS

 

 

69

 

 

 

XDSACK

 

70

72

(normal)

 

71

 

 

 

 

XDSACK

 

 

 

(early)

 

 

 

 

 

 

73

 

 

 

E_Clock = log.'0'

Asynchronous Motorola-Mode, Processor-Write-Timing

AB(10..0)

DB(7..0)

AS

R_W

XCS

XDSACK (normal)

XDSACK (early)

VALID

 

 

60

62

 

Data In

 

 

74

75

 

76

 

 

66

 

 

63

67

 

 

 

68

 

 

 

69

78

70

72

 

71

 

79

 

 

73

 

 

 

 

E_Clock = log.'0'

SPC3 Hardware Description

V1.3

Page 53

Copyright (C) Siemens AG 2003 All rights reserved.

 

2003/04

Page 55
Image 55
Siemens SPC3 manual Asynchronous Motorola-Mode, Processor-Read-Timing, XCS Xdsack