参数资料
型号: MPC8378E-MDS-PB
厂商: Freescale Semiconductor
文件页数: 50/128页
文件大小: 0K
描述: BOARD PROCESSOR FOR MDS S
标准包装: 1
类型: MPU
适用于相关产品: MPC8378
所含物品:
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
28
Freescale Semiconductor
8.3.1
SGMII AC Timing Specifications
This section describes the SGMII transmit and receive AC timing specifications. Transmitter and receiver
characteristics are measured at the transmitter outputs (L1_SD_TXn and L1_SD_TXn) or at the receiver
inputs (L1_SD_RXn and L1_SD_RXn) as depicted in Figure 9 respectively.
Figure 9. SGMII AC Test/Measurement Load
8.3.1.1
SGMII Transmit AC Timing Specifications
This table provides the SGMII transmit AC timing targets. Source synchronous clocking is not supported.
Table 28. SGMII Transmit AC Timing Specifications
At recommended operating conditions with XVDD_SRDS = 1.0 V ± 5%.
Parameter
Symbol
Min
Typical
Max
Unit
Note
Deterministic Jitter
JD
0.17
UIp-p
Total Jitter
JT
0.35
UIp-p
Unit Interval
UI
799.92
800
800.08
ps
VOD fall time (80%–20%)
tfall
50
120
ps
VOD rise time (20%–80%)
trise
50
120
ps
Note:
1. Each UI is 800 ps ± 100 ppm.
TX
C = CTX
Silicon
+ Package
C = CTX
R = 50
Ω
R = 50
Ω
D+ Package Pin
D– Package Pin
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