PACE 1757 M/ME

Page 9 of 34

Document # MICRO-10 REV B

SIGNAL PROPAGATION DELAYS (cont'd)

Symbol

Description

MIN

MAX

MIN

MAX

MIN

MAX

MIN

MAX

TD/I(EXT ADR)

V

MMU Cache Hit

25

23

23

23

TSTRBD(EXT ADR ER) External Address Error

25

20

18

16

TIBD

Error Correction Write Cycle

30

25

24

23

TC(GNT)

Arbiter Priority Transition

35

25

22

18

TC(RDYA)

Address Ready

30

25

21

17

TIBDIN(MEM PAR ER)

Parity Mode

34

30

28

25

TC(MEM PRT ER)

Memory Protect Error

50

45

43

40

T

STRBD (WR PROT) Write Protect Cache Hit

25

20

18

16

TC(WR PROT)I

Write Protect Cache Miss

25

22

20

18

TD/I(PROT FLAG)

Cache Hit (BPU Protection Error)

40

45

42

40

TD/I(PROT FLAG)

Cache Hit (MMU Key-Lock Error)

40

35

33

30

TC(PROT FLAG)

Cache Hit (BPU Protection Error)

25

35

33

30

TC(PROT FLAG)

Cache Hit (MMU Key-Lock Error)

25

20

20

20

TC(EXT ADR)

V

Clock to EXT Address Valid (Miss)

32

30

27

23

TFC(IB OUT)

V

Clock to EXT Address Valid (Miss)

30

25

25

25

T

EX RDY1(RDYD)

Ready Data

28

24

23

21

T

EX RDY(RDYD)

Ready Data

16

13

12.5

11.5

TC (RDYD)

V

Ready Data

28

22

19

16

TSTRBAh(A)

V

Address Valid

29

21

20

19

TIBA

Address Valid

31

22

21

20

TFC (R)

L

Read Strobes

24

18

15

12

TSTRBD

Read Strobes

24

18

15

12

TSTRBD

Write Strobes

262018

15

TSTRBD

Write Strobes

262018

15

TSTRBD(STRTROM)

Start-Up ROM

26

20

18

15

TC(TIM CLK)

Timer Clock

30

25

23

20

TEXT AD(FC B3)

Extended Address Set-Up

10

10

10

10

TF(F), TI(I)

Edge Sensitive Pulse Width

5555

tr, tf

Clock Rise and Fall Time

5

5

5

5

20 MHz

30 MHz

35 MHz

40 MHz

Note

All timing parameters are composed of Three elements. The first "T" stands for timing. The second represents the "from" signal. The third in

parentheses indicates "to" signal. When the CPU clock is one of the signal elements, either the rising edge "E" or the falling edge "FC" is referenced.

When other elements are used, an additional suffix indicates the final logic level of the signal. "L" - low level, "H" - high level, "V" - valid, "Z" - high

impedance, "X" - don't care, "LH" - low to high, "ZH" - high impedance to high, "R" - read cycle, and "W" - write cycle.

Units = ns