MPC8321E Freescale Semiconductor, Inc, MPC8321E Datasheet - Page 26

• Manufacturer Part Number: MPC8321E
• Description: Mpc8321e Powerquicc Ii Pro Processor
• Manufacturer: Freescale Semiconductor, Inc

Local Bus
Figure 14
26
LALE output fall to LAD output transition (LATCH hold time)
LALE output fall to LAD output transition (LATCH hold time)
Local bus clock to output valid
Local bus clock 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. t
6. t
7. t
8. For purposes of active/float timing measurements, the Hi-Z or off state is defined to be when the total current delivered
inputs and t
timing (LB) for the input (I) to go invalid (X) with respect to the time the t
clock one(1).
LCLK0 (for all other inputs).
signaling levels.
on LAD output pins.
LAD output pins.
through the component pin is less than or equal to the leakage current specification.
MPC8323E PowerQUICC™ II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 1
LBOTOT1
LBOTOT2
LBOTOT3
provides the AC test load for the local bus.
should be used when RCWH[LALE] is not set and the load on LALE output pin is at least 10 pF less than the load
should be used when RCWH[LALE] is set and the load on LALE output pin is at least 10 pF less than the load on
should be used when RCWH[LALE] is set and the load on LALE output pin equals to the load on LAD output pins.
(first two letters of functional block)(reference)(state)(signal)(state)
Parameter
Table 30. Local Bus General Timing Parameters (continued)
Output
DD
/2 of the rising/falling edge of LCLK0 to 0.4 × OV
Figure 14. Local Bus C Test Load
Z
0
= 50 Ω
(first two letters of functional block)(signal)(state)(reference)(state)
Symbol
t
t
for outputs. For example, t
t
t
LBOTOT2
LBOTOT3
LBKHOV
LBKHOZ
LBK
R
1
clock reference (K) goes high (H), in this case for
L
= 50 Ω
Min
2.5
—
—
3
DD
OV
of the signal in question for 3.3-V
DD
LBIXKH1
/2
Max
—
—
3
4
Freescale Semiconductor
symbolizes local bus
Unit
ns
ns
ns
ns
Notes
for
6
7
3
8