mpc8309 Freescale Semiconductor, Inc, mpc8309 Datasheet - Page 20

• Manufacturer Part Number: mpc8309
• Description: Powerquicc Ii Pro Integrated Communications Processor Family Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Local Bus
7
This section describes the DC and AC electrical specifications for the local bus interface of the MPC8309.
7.1
Table 17
7.2
Table 18
20
Local bus cycle time
Input setup to local bus clock (LCLKn)
Input hold from local bus clock (LCLKn)
Local bus clock (LCLKn) to output valid
Local bus clock (LCLKn) to output high impedance for LAD/LDP
Notes:
1. The symbols used for timing specifications follow the pattern of t
2. All timings are in reference to falling edge of LCLK0 (for all outputs and for LGTA and LUPWAIT inputs) or rising edge of
3. All signals are measured from OV
4. Input timings are measured at the pin.
5. For purposes of active/float timing measurements, the Hi-Z or off state is defined to be when the total current delivered
High-level input voltage
Low-level input voltage
High-level output voltage, I
Low-level output voltage, I
Input current
inputs and t
timing (LB) for the input (I) to go invalid (X) with respect to the time the t
for clock one(1).
LCLK0 (for all other inputs).
signaling levels.
through the component pin is less than or equal to the leakage current specification.
MPC8309 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0
Local Bus
provides the DC electrical characteristics for the local bus interface.
describes the general timing parameters of the local bus interface of the MPC8309.
Local Bus DC Electrical Characteristics
Local Bus AC Electrical Specifications
(first two letters of functional block)(reference)(state)(signal)(state)
Parameter
Parameter
OL
OH
= 100 A
= –100 A
Table 17. Local Bus DC Electrical Characteristics
Table 18. Local Bus General Timing Parameters
DD
/2 of the rising/falling edge of LCLK0 to 0.4  OV
Symbol
V
V
V
V
I
OH
IN
OL
IH
IL
(first two letters of functional block)(signal)(state)(reference)(state)
Symbol
for outputs. For example, t
t
t
t
t
LBKHOV
LBKHOZ
LBIVKH
LBIXKH
t
LBK
LBK
1
OV
clock reference (K) goes high (H), in this case
DD
–0.3
Min
—
—
2
– 0.2
Min
1.0
15
—
—
7
DD
of the signal in question for 3.3-V
LBIXKH1
Max
—
—
—
OV
3
4
DD
Max
Freescale Semiconductor
0.8
0.2
—
±5
symbolizes local bus
+ 0.3
Unit
ns
ns
ns
ns
ns
Unit
Notes
A
V
V
V
V
3, 4
3, 4
2
3
5
for