8 microprocessor bus ac characteristics, Icroprocessor, Ac c – Maxim Integrated DS33R11 User Manual

Page 324: Haracteristics

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DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver

324 of 344

13.8 Microprocessor Bus AC Characteristics

Table 13-13. AC Characteristics—Microprocessor Bus Timing

(VDD3.3 = 3.3V

±5%, VDD1.8 = 1.8V ±5%, T

j

= -40°C to +85°C.) (Note 1,

Figure 13-9

,

Figure 13-10

,

Figure 13-11

,

and

Figure 13-12

)

PARAMETER SYMBOL

MIN

TYP

MAX

UNITS

Setup Time for A[12:0] Valid to

CS Active

t1 0

ns

Setup Time for

CS Active to Either RD or WR Active

t2 0

ns

Delay Time from either

RD or DS Active to DATA[7:0]

Valid

t3

75

ns

Hold Time from either

RD or WR Inactive to CS Inactive

t4 0

ns

Hold Time from

CS or RD or DS Inactive to DATA[7:0]

Tri-State

t5 5

20

ns

Wait Time from R

W Active to Latch Data

t6

80 ns

Data Set Up Time to

DS Active

t7 10

ns

Data Hold Time from R

W Inactive

t8 2

ns

Address Hold from R

W Inactive

t9 0

ns

Write Access to Subsequent Write/Read Access Delay
Time

t10 80

ns

Note 1:

Timing parameters in this table are guaranteed by design (GBD).

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