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MPC8349E PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 10
34
Freescale Semiconductor
Local Bus
10 Local Bus
This section describes the DC and AC electrical specifications for the local bus interface of the
MPC8349E.
10.1
Local Bus DC Electrical Characteristics
Table 33
provides the DC electrical characteristics for the local bus interface.
10.2
Local Bus AC Electrical Specification
Table 34
and
Table 35
describe the general timing parameters of the local bus interface of the MPC8349E.
Table 33. Local Bus DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
V
IH
2
OV
DD
+ 0.3
V
Low-level input voltage
V
IL
–0.3
0.8
V
Input current
I
IN
—
±5
μ
A
High-level output voltage, I
OH
= –100
μ
A
V
OH
OV
DD
– 0.2
—
V
Low-level output voltage, I
OL
= 100
μ
A
V
OL
—
0.2
V
Table 34. Local Bus General Timing Parameters—DLL On
Parameter
Symbol
1
Min
Max
Unit
Notes
Local bus cycle time
t
LBK
7.5
—
ns
2
Input setup to local bus clock (except LUPWAIT)
t
LBIVKH1
1.5
—
ns
3, 4
LUPWAIT input setup to local bus clock
t
LBIVKH2
2.2
—
ns
3, 4
Input hold from local bus clock (except LUPWAIT)
t
LBIXKH1
1.0
—
ns
3, 4
LUPWAIT Input hold from local bus clock
t
LBIXKH2
1.0
—
ns
3, 4
LALE output fall to LAD output transition (LATCH hold time)
t
LBOTOT1
1.5
—
ns
5
LALE output fall to LAD output transition (LATCH hold time)
t
LBOTOT2
3
—
ns
6
LALE output fall to LAD output transition (LATCH hold time)
t
LBOTOT3
2.5
—
ns
7
Local bus clock to LALE rise
t
LBKHLR
—
4.5
ns
Local bus clock to output valid (except LAD/LDP and LALE)
t
LBKHOV1
—
4.5
ns
Local bus clock to data valid for LAD/LDP
t
LBKHOV2
—
4.5
ns
3
Local bus clock to address valid for LAD
t
LBKHOV3
—
4.5
ns
3
Output hold from local bus clock (except LAD/LDP and LALE)
t
LBKHOX1
1
—
ns
3