mc68ec060 Freescale Semiconductor, Inc, mc68ec060 Datasheet - Page 226

• Manufacturer Part Number: mc68ec060
• Description: Mc68060 Superscalar 68k Microprocessor Including The Lc060 And Ec060
• Manufacturer: Freescale Semiconductor, Inc

7.13 RESET OPERATION
An external device asserts the reset input signal (RSTI) to reset the processor. When power
is applied to the system, external circuitry should assert RSTI for a minimum of ten BCLK
cycles after V
on reset operation, illustrating the relationships among V
signals. CLK is required to be stable by the time V
ification. CLK should start oscillating as V
internal to the part caused by the random manner in which internal flip-flops power-up. RSTI
is internally synchronized for two BCLKs before being used and must meet the specified
MOTOROLA
CC
ARBITRATION
* AM indicates the alternate bus master.
ATTRIBUTES
TRANSFER
is within tolerance. Figure 7-48 is a functional timing diagram of the power-
D31–D0
AM_BG*
AM_BR*
A31–A0
SNOOP
STATE
BCLK
BUS
BTT
TT1
BR
BG
TA
BB
TS
END-TEN
C1
Figure 7-47. Snooped Bus Cycle
AM-IMP
M68060 USER’S MANUAL
C2
SNOOP
C3
CC
is ramped up in order to clear out contention
AM-EXP
ALTERNATE
MASTER
C4
CC
AM-EXP
reaches the minimum operating spec-
C5
CC
AM-EXP
, RSTI, mode selects, and bus
C6
PROCESSOR
Bus Operation
7-71