參數(shù)資料
型號： MPC8377ECVRANGA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, MICROPROCESSOR, PBGA689
封裝： 31 X 31 MM, 2.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-689
文件頁數(shù)： 40/124頁
文件大?。?/td> 1462K
代理商： MPC8377ECVRANGA
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 2
22
Freescale Semiconductor
Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
7.2
DUART AC Electrical Specifications
Table 22 provides the AC timing parameters for the DUART interface of the device.
8
Ethernet: Enhanced Three-Speed Ethernet (eTSEC)
This section provides the AC and DC electrical characteristics for the enhanced three-speed Ethernet
controller.
8.1
Enhanced Three-Speed Ethernet Controller (eTSEC)
(10/100/1000 Mbps)—MII/RGMII/RTBI/RMII DC Electrical
Characteristics
The electrical characteristics specified here apply to media independent interface (MII), reduced gigabit
media independent interface (RGMII), reduced ten-bit interface (RTBI), reduced media independent
interface (RMII) signals, management data input/output (MDIO) and management data clock (MDC).
The MII and RMII interfaces are defined for 3.3 V, while the RGMII and RTBI interfaces can be operated
at 2.5 V. The RGMII and RTBI interfaces follow the Reduced Gigabit Media-Independent Interface
(RGMII) Specification Version 1.3. The RMII interface follows the RMII Consortium RMII Specification
Version 1.2.
High-level output voltage,
IOH = –100 μA
VOH
OVDD – 0.2
—
V
Low-level output voltage,
IOL = 100 μA
VOL
—0.2
V
Input current,
(0 V
≤VIN ≤ OVDD)
IIN
—±30
μA
Note:
The symbol VIN, in this case, represents the OVIN symbol referenced in Table 2.
Table 22. DUART AC Timing Specifications
Parameter
Value
Unit
Notes
Minimum baud rate
256
baud
—
Maximum baud rate
> 1,000,000
baud
Oversample rate
16
—
Notes:
1 Actual attainable baud rate will be limited by the latency of interrupt processing.
2 The middle of a start bit is detected as the 8th sampled 0 after the 1-to-0 transition of the start bit. Subsequent bit values are
sampled each 16th sample.
Table 21. DUART DC Electrical Characteristics (continued)
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