MPC8360E datasheet(44/108 Pages) FREESCALE

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MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4

Freescale Semiconductor

Local Bus

Figure 22 provides the AC test load for the local bus.

Figure 22. Local Bus C Test Load

Local bus clock to output high impedance for LAD/LDP

tLBKHOZ

—4

—

Notes:

1. The symbols used for timing specifications follow the pattern of t(first two letters of functional block)(signal)(state)(reference)(state) for

inputs and t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tLBIXKH1 symbolizes local bus

timing (LB) for the input (I) to go invalid (X) with respect to the time the tLBK clock reference (K) goes high (H), in this case for

clock one (1). Also, tLBKHOX symbolizes local bus timing (LB) for the tLBK clock reference (K) to go high (H), with respect to

the output (O) going invalid (X) or output hold time.

2. All timings are in reference to falling edge of LCLK0 (for all outputs and for LGTA and LUPWAIT inputs) or rising edge of

LCLK0 (for all other inputs).

3. All signals are measured from OVDD/2 of the rising/falling edge of LCLK0 to 0.4 × OVDD of the signal in question for 3.3-V

signaling levels.

4. Input timings are measured at the pin.

5. tLBOTOT1 should be used when RCWH[LALE] is not set and when the load on LALE output pin is at least 10 pF less than the

load on LAD output pins.

6. tLBOTOT2 should be used when RCWH[LALE] is set and when the load on LALE output pin is at least 10 pF less than the load

on LAD output pins.

7. tLBOTOT3 should be used when RCWH[LALE] is set and when the load on LALE output pin equals to the load on LAD output

pins.

8. For purposes of active/float timing measurements, the Hi-Z or off-state is defined to be when the total current delivered

through the component pin is less than or equal to the leakage current specification.

9. DLL bypass mode is not recommended for use at frequencies above 66 MHz.

Table 41. Local Bus General Timing Parameters—DLL Bypass Mode (continued)

Parameter

Symbol1

Min

Max

Unit

Notes

Output

Z0 = 50 Ω

OVDD/2

RL = 50 Ω

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