TMPR4955AF datasheet(144/168 Pages) TOSHIBA

144 / 168 page

Chapter 7 JTAG Interface

7-10

•

Exit 1-IR

This is a temporary controller state.

When the controller is in this state, then it moves to either the Pause-IR state if

JTMS is held low, or the Update-IR state if JTMS is held high.

•

Pause-IR

This state allows the shifting of the instruction register to be temporarily

suspended. Both the instruction register and the data register retain their current

states.

When the controller is in this state, it remains in the Pause-IR state if JTMS is

held low, or moves to the Exit2-IR state if JTMS is held high.

•

Exit 2-IR

This is a temporary controller state.

When the controller is in this state, it moves to either the Shift-IR state if JTMS is

held low, or the Update-IR state if JTMS is held high.

•

Update-IR

This state allows the instruction previously shifted into the instruction register to

be output in parallel on the rising edge of JTCK. Then it becomes the current

instruction, setting a new operational mode.

When the controller is in this state, it moves to either the Run-Test/Idle state if

JTMS is low, or the Select-DR-Scan state if JTMS is high.

Tables 7.3.2 shows the boundary scan order of the processor signals.

Table 7.3.2 Tx4955A JTAG Boundary-Scan Ordering

[JTDI]

1: SysEN1

2: SysEN2

3: SysEN3

4: SysEN4

5: BufSel1

6: SysAD4

7: SysAD5

8: SysAD6

9: SysAD7

10: SysAD8

11: SysAD9

12: SysAD10

13: SysAD11

14: SysAD12

15: SysAD13

16: SysAD14

17: SysAD15

18: BufSel0

19: PCST3

20: PCST2

21: PCST1

22: PCST0

23: RdRdy*

24: WrRdy*

25: ValidIn*

26: ValidOut*

27: Release*

28: PLLRES*

29: TintDis

30: SysCmd0

31: SysCmd1

32: SysCmd2

33: SysCmd3

34: SysCmd4

35: SysCmd5

36: SysCmd6

37: SysCmd7

38: SysCmd8

39: SysCmdP

40: HALTDOZE

41: INT0*

42: INT1*

43: INT2*

44: INT3*

45: INT4*

46: INT5*

47: TPC3

48: TPC2

49: TPC1

50: DCLK

51: NMI*

52: ExtRqst*

53: Reset*

54: ColdReset*

55: Endian

56: SysAD16

57: SysAD17

58: SysAD18

59: SysAD19

60: SysAD20

61: SysAD21

62: SysAD22

63: SysAD23

64: SysAD24

65: SysAD25

66: SysAD26

67: SysAD27

68: MODE43*

69: DivMode1

70: DivMode0

71: SysAD28

72: SysAD29

73: SysAD30

74: SysAD31

75: SysADC2

76: SysADC3

77: SysADC0

78: SysADC1

79: SysAD0

80: SysAD1

81: SysAD2

82: SysAD3

83: PCST8

84: PCST7

85: PCST6

86: PCST5

87: PCST4

[JTDO]

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