MPC8569E datasheet(73/127 Pages) FREESCALE

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Ethernet Interface

MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

The following figure shows the data and command output AC timing diagram.

1QUICC Engine block IEEE 1588 Output AC timing: The output delay is counted starting at the rising

edge if tT11588CLKOUT is non-inverting. Otherwise, it is counted starting at the falling edge.

Figure 31. QUICC Engine Block IEEE 1588 Output AC Timing

The following figure shows the data and command input AC timing diagram.

Figure 32. QUICC Engine Block IEEE 1588 Input AC Timing

QE_1588_TRIG_IN pulse width

tT1588TRIGH

2×tT1588CLK_

MAX

——

QE_PTP_SOF_TX_IN pulse width

tT1588TRIGH

TTX_CLK ×2

—

QE_PTP_SOF_RX_IN pulse width

tT1588TRIGH

TRX_CLK ×2

—

Notes:

1. TRX_CLK is the max clock period of the QUICC Engine block’s receiving clock selected by TMR_CTRL[CKSEL]. See the

QUICC Engine Block with Protocol Interworking Reference Manual, for a description of TMR_CTRL registers.

2. It needs to be at least two times the clock period of the clock selected by TMR_CTRL[CKSEL]. See the QUICC Engine Block

with Protocol Interworking Reference Manual, for a description of TMR_CTRL registers.

3. The maximum value of tT1588CLK is not only defined by the value of tRX_CLK, but also defined by the recovered clock. For

example, for 10/100/1000 Mbps modes, the maximum value of tT1588CLK are 2800, 280, and 56 ns, respectively.

4. The minimum value of tTX/RXCLK is defined by the recovered clock. For example, for 10/100/1000 Mbps modes, the value of

tTX/RXCLK are 800, 80, and 16 ns, respectively.

5. System/board must be designed to ensure the input requirement to the device is achieved. Proper device operation is

guaranteed for inputs meeting this requirement by design, simulation, characterization, or functional testing.

Table 41. QUICC Engine Block IEEE 1588 AC Timing Specifications (continued)

Parameter

Symbol

Min

Typ

Max

Unit

Notes

QE_1588_CLK_OUT

QE_1588_PPS_OUT

tT1588OV

tT1588CLKOUT

tT1588CLKOUTH

QE_1588_CLK

QE_1588_TRIG_IN

tT1588CLK

tT1588TRIGH

tT1588CLKH

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