PPC8567CVTAQGGA datasheet(79/139 Pages) FREESCALE

79 / 139 page

MPC8568E/MPC8567E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Serial RapidIO

15.2

AC Requirements for Serial RapidIO SD_REF_CLK and

SD_REF_CLK

Table 50 lists AC requirements.

15.3

Signal Definitions

LP-Serial links use differential signaling. This section defines terms used in the description and

specification of differential signals. Figure 52 shows how the signals are defined. The figures show

waveforms for either a transmitter output (TD and TD) or a receiver input (RD and RD). Each signal

swings between A Volts and B Volts where A > B. Using these waveforms, the definitions are as follows:

7. The transmitter output signals and the receiver input signals TD, TD, RD and RD each have a

peak-to-peak swing of A – B Volts

8. The differential output signal of the transmitter, VOD, is defined as VTD–VTD

9. The differential input signal of the receiver, VID, is defined as VRD-VRD

10. The differential output signal of the transmitter and the differential input signal of the receiver

each range from A – B to –(A – B) Volts

11. The peak value of the differential transmitter output signal and the differential receiver input

signal is A – B Volts

12. The peak-to-peak value of the differential transmitter output signal and the differential receiver

input signal is 2 * (A – B) Volts

Figure 52. Differential Peak-Peak Voltage of Transmitter or Receiver

Table 53. SD_REF_CLK and SD_REF_CLK AC Requirements

Symbol

Parameter Description

Min

Typical

Max

Units

Comments

tREF

REFCLK cycle time

—

10(8)

—

8 ns applies only to serial RapidIO

with 125-MHz reference clock

tREFCJ

REFCLK cycle-to-cycle jitter. Difference in the

period of any two adjacent REFCLK cycles

—

tREFPJ

Phase jitter. Deviation in edge location with

respect to mean edge location

–40

—

Differential Peak-Peak = 2 * (A-B)

A Volts

TD or RD

B Volts

PPC8567CVTAQGGA 数据表(PDF) 79 Page - Freescale Semiconductor, Inc

PPC8567CVTAQGGA 数据表(HTML) 79 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载