mpc8640 Freescale Semiconductor, Inc, mpc8640 Datasheet - Page 43

• Manufacturer Part Number: mpc8640
• Description: Integrated Host Processor
• Manufacturer: Freescale Semiconductor, Inc

10 Local Bus
This section describes the DC and AC electrical specifications for the local bus interface of the MPC8640.
10.1
Table 40
DC.
10.2
Table 41
For information about the frequency range of local bus see
Freescale Semiconductor
Local bus cycle time
Local bus duty cycle
LCLK[n] skew to LCLK[m] or LSYNC_OUT
Input setup to local bus clock (except LGTA/LUPWAIT)
LGTA/LUPWAIT input setup to local bus clock
Input hold from local bus clock (except LGTA/LUPWAIT)
LGTA/LUPWAIT input hold from local bus clock
LALE output transition to LAD/LDP output transition (LATCH hold time)
Local bus clock to output valid (except LAD/LDP and LALE)
Local bus clock to data valid for LAD/LDP
Local bus clock to address valid for LAD
Local bus clock to LALE assertion
High-level input voltage
Low-level input voltage
Input current
(V
High-level output voltage
(OV
Low-level output voltage
(OV
Note:
1. Note that the symbol V
IN
DD
DD
1
= 0 V or V
= min, I
= min, I
provides the DC electrical characteristics for the local bus interface operating at OV
describes the timing parameters of the local bus interface at OV
Local Bus DC Electrical Characteristics
Local Bus AC Timing Specifications
OH
OL
Parameter
IN
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
= 2 mA)
= –2 mA)
= OV
Table 41. Local Bus Timing Specifications (OV
DD
IN
)
Table 40. Local Bus DC Electrical Characteristics (3.3 V DC)
, in this case, represents the OV
Parameter
Symbol
V
V
V
V
I
IN
OH
OL
IH
IL
IN
symbol referenced in
OV
DD
Section 18.1, “Clock Ranges.”
–0.3
Min
Symbol
t
t
t
t
t
t
—
—
LBKH
LBKSKEW
t
t
t
t
2
t
LBKHOV1
LBKHOV2
LBKHOV3
LBKHOV4
LBIVKH1
LBIVKH2
LBIXKH1
LBIXKH2
LBOTOT
– 0.2
t
DD
LBK
/t
LBK
= 3.3 V)—PLL Enabled
1
Table 1
Min
1.8
1.7
1.0
1.0
1.5
45
—
—
—
—
—
DD
8
OV
and
= 3.3 V with PLL enabled.
DD
Max
0.8
0.2
±5
—
+ 0.3
Table
Max
150
2.0
2.2
2.3
2.3
55
—
—
—
—
—
—
2.
Unit
ns
ps
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
DD
Unit
μA
V
V
V
V
= 3.3 V
Local Bus
Notes
7, 8
3, 4
3, 4
3, 4
3, 4
—
—
—
—
2
6
3
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