Electrical and Thermal Characteristics
MOTOROLA
M68060 USERS MANUAL
12-5
12.7 INPUT AC TIMING SPECIFICATIONS (VCC = 3.3 V ± 5%)
NOTE:
BCLK is not a pin signal name. It is a virtual bus clock where the BCLK rising edge coincides with that of CLK when
CLKEN is asserted. The BCLK falling edge is insignificant. An input timing reference to BCLK means that the specific
input transitions only on rising CLK edges when CLKEN is asserted. A timing reference to CLK means that the input
may transition off the rising CLK edge, regardless of CLKEN state.
Num
Characteristic
50 MHz
66 MHz
75 MHz
Unit
Min
Max
Min
Max
Min.
Max.
15
Data-In Valid to BCLK (Setup)
222
nS
16
BCLK to Data-In Invalid (Hold)
222
nS
17
BCLK to Data-In High Impedance
(Read Followed by Write)
11
98
nS
22a TA, Valid to BCLK (Setup)
10
7
6.2
nS
22b TEA Valid to BCLK (Setup)
10
7
6.2
nS
22c TCI Valid to BCLK (Setup)
10
7
6.2
nS
22d TBI Valid to BCLK (Setup)
10
7
6.2
nS
22e TRA Valid to BCLK (Setup)
10
7
6.2
nS
23
BCLK to TA, TEA, TCI, TBI, TRA Invalid
(Hold)
222
nS
24
AVEC Valid to BCLK (Setup)
10
7
6.2
nS
25
BCLK to AVEC Invalid (Hold)
222
nS
41a BB Valid to BCLK (Setup)
10
7
6.2
nS
41b BG Valid to BCLK (Setup)
10
7
6.2
nS
41c CDIS, MDIS Valid to BCLK (Setup)
10
7
6.2
nS
41d IPL
Valid to CLK (Setup)
222
nS
41e BTT Valid to BCLK (Setup)
10
7
6.2
nS
41f
BGR Valid to BCLK (Setup)
10
7
6.2
nS
42a BCLK to BB Invalid (Hold)
222
nS
42b BCLK to BG Invalid (Hold)
222
nS
42c BCLK to CDIS, MDIS Invalid (Hold)
222
nS
42d CLK to IPLx Invalid (Hold)
222
nS
42e BCLK to BTT Invalid (Hold)
222
nS
42f
BCLK to BGR Invalid (Hold)
222
nS
44a Address Valid to BCLK (Setup)
212
nS
44c TT1 Valid to BCLK (Setup)
10
7
6.2
nS
44e SNOOP Valid to BCLK (Setup)
10
7
6.2
nS
45a BCLK to Address Invalid (Hold)
222
nS
45c BCLK to TT1 Invalid (Hold)
222
nS
45e BCLK to SNOOP Invalid (Hold)
222
nS
46
TS Valid to BCLK (Setup)
10
7
6.2
nS
47
BCLK to TS Invalid (Hold)
222
nS
49
BCLK to BB in High Impedance
(MC68060 Assumes Bus Mastership)
333
nS
51
RSTI Valid to BCLK
222
nS
52
BCLK to RSTI Invalid (hold)
222
nS
53
Mode Select Setup to BCLK (RSTI Asserted)
10
7
6.2
nS
54
BCLK to Mode Selects Invalid (RSTI Assert-
ed)
222
nS
64
CLA Valid to BCLK (Setup)
10
7
6.2
nS
65
BCLK to CLA Invalid (Hold)
222
nS