MPC7410 datasheet(20/56 Pages) FREESCALE

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MPC7410 RISC Microprocessor Hardware Specifications, Rev. 6.1

Freescale Semiconductor

Electrical and Thermal Characteristics

4.2.4

L2 Bus AC Specifications

Table 10 provides the L2 bus interface AC timing specifications for the MPC7410 as defined in Figure 8 and

Figure 9 for the loading conditions described in Figure 10.

Table 10. L2 Bus Interface AC Timing Specifications

At recommended operating conditions (see Table 3)

Parameter

Symbol

400, 450, 500 MHz

Unit

Notes

Min

Max

L2SYNC_IN rise and fall time

tL2CR and tL2CF

—1.0

Setup times: Data and parity

tDVL2CH

1.5

—

Input hold times: Data and parity

tDXL2CH

—0.0

Valid times:

All outputs when L2CR[14–15] = 00

All outputs when L2CR[14–15] = 01

All outputs when L2CR[14–15] = 10

All outputs when L2CR[14–15] = 11

tL2CHOV

—

2.5

2.9

3.5

3, 4

Output hold times

All outputs when L2CR[14–15] = 00

All outputs when L2CR[14–15] = 01

All outputs when L2CR[14–15] = 10

All outputs when L2CR[14–15] = 11

tL2CHOX

0.4

0.8

1.2

1.6

—

L2SYNC_IN to high impedance:

All outputs when L2CR[14–15] = 00

All outputs when L2CR[14–15] = 01

All outputs when L2CR[14–15] = 10

All outputs when L2CR[14–15] = 11

tL2CHOZ

—

2.0

2.5

3.0

3.5

—

Notes:

1. Rise and fall times for the L2SYNC_IN input are measured from 20% to 80% of L2OVDD.

2. All input specifications are measured from the midpoint of the signal in question to the midpoint voltage of the rising

edge of the input L2SYNC_IN (see Figure 8). Input timings are measured at the pins.

3. All output specifications are measured from the midpoint voltage of the rising edge of L2SYNC_IN to the midpoint

of the signal in question. The output timings are measured at the pins. All output timings assume a purely resistive

50-

Ω load (see Figure 10).

4. The outputs are valid for both single-ended and differential L2CLK modes. For pipelined registered synchronous

BurstRAMs, L2CR[14–15] = 00 is recommended. For pipelined late write synchronous BurstRAMs,

L2CR[14–15] = 10 is recommended.

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