MPC8250ACZQIHBC Просмотр технического описания (PDF) - Freescale Semiconductor

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MPC8250ACZQIHBC

MPC8250 Hardware Specifications

Freescale Semiconductor 

Electrical and Thermal Characteristics

Figure 4 shows the FCC internal clock.

BRG_OUT

sp16a

FCC input signals

sp17a

FCC output signals

Note: When GFMR.TCI = 0

sp36a/sp37a

FCC output signals

Note: When GFMR.TCI = 1

Figure 4. FCC Internal Clock Diagram

Figure 5 shows the SCC/SMC/SPI/I2C external clock.

sp36a/sp37a

Serial CLKin

SCC/SMC/SPI/I2C input signals

(See note.)

SCC/SMC/SPI/I2C output signals

(See note.)

sp18b

sp19b

sp38b/sp39b

Note: There are four possible timing conditions for SCC and SPI:

1. Input sampled on the rising edge and output driven on the rising edge (shown).

2. Input sampled on the rising edge and output driven on the falling edge.

3. Input sampled on the falling edge and output driven on the falling edge.

4. Input sampled on the falling edge and output driven on the rising edge.

Figure 5. SCC/SMC/SPI/I2C External Clock Diagram

MPC8250 Hardware Specifications, Rev. 2

14

Freescale Semiconductor

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