參數(shù)資料
型號： MPC8349ECVVALD
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 667 MHz, MICROPROCESSOR, PBGA672
封裝： 35 X 35 MM, 1.46 MM HEIGHT, 1 MM PITCH, LEAD FREE, TBGA-672
文件頁數(shù)： 15/88頁
文件大?。?/td> 1014K
代理商： MPC8349ECVVALD
MPC8349E PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 10
22
Freescale Semiconductor
Ethernet: Three-Speed Ethernet, MII Management
8.2
GMII, MII, TBI, RGMII, and RTBI AC Timing Specifications
The AC timing specifications for GMII, MII, TBI, RGMII, and RTBI are presented in this section.
8.2.1
GMII Timing Specifications
This section describes the GMII transmit and receive AC timing specifications.
8.2.1.1
GMII Transmit AC Timing Specifications
Table 21 provides the GMII transmit AC timing specifications.
Table 20. RGMII/RTBI (When Operating at 2.5 V) DC Electrical Characteristics
Parameters
Symbol
Conditions
Min
Max
Unit
Supply voltage 2.5 V
LVDD
—
2.37
2.63
V
Output high voltage
VOH
IOH = –1.0 mA
LVDD = Min
2.00
LVDD +0.3
V
Output low voltage
VOL
IOL = 1.0 mA
LVDD = Min
GND – 0.3
0.40
V
Input high voltage
VIH
—LVDD = Min
1.7
LVDD +0.3
V
Input low voltage
VIL
—LVDD = Min
–0.3
0.70
V
Input high current
IIH
VIN
1 = LV
DD
—10
μA
Input low current
IIL
VIN
1 = GND
–15
—
μA
Note:
1. The symbol VIN, in this case, represents the LVIN symbol referenced in Table 1 and Table 2.
Table 21. GMII Transmit AC Timing Specifications
At recommended operating conditions with LVDD/OVDD of 3.3 V ± 10%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
GTX_CLK clock period
tGTX
—8.0
—
ns
GTX_CLK duty cycle
tGTXH/tGTX
43.75
—
56.25
%
GTX_CLK to GMII data TXD[7:0], TX_ER, TX_EN delay
tGTKHDX
0.5
—
5.0
ns
GTX_CLK clock rise time, VIL(min) to VIH(max)
tGTXR
——
1.0
ns
GTX_CLK clock fall time, VIH(max) to VIL(min)
tGTXF
——
1.0
ns
GTX_CLK125 clock period
tG125
2
—8.0
—
ns
GTX_CLK125 reference clock duty cycle measured at LVDD/2
tG125H/tG125
45
—
55
%
Notes:
1. The symbols for timing specifications follow the pattern t(first two letters of functional block)(signal)(state)(reference)(state) for inputs and
t(first two letters of functional block)(reference)(state)(signal)(state) for outputs. For example, tGTKHDV symbolizes GMII transmit timing (GT)
with respect to the tGTX clock reference (K) going to the high state (H) relative to the time date input signals (D) reaching the
valid state (V) to state or setup time. Also, tGTKHDX symbolizes GMII transmit timing (GT) with respect to the tGTX clock
reference (K) going to the high state (H) relative to the time date input signals (D) going invalid (X) or hold time. In general,
the clock reference symbol is based on three letters representing the clock of a particular function. For example, the subscript
of tGTX represents the GMII(G) transmit (TX) clock. For rise and fall times, the latter convention is used with the appropriate
letter: R (rise) or F (fall).
2. This symbol represents the external GTX_CLK125 signal and does not follow the original symbol naming convention.
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MPC8349ECZUAJDB 功能描述:微處理器 - MPU 8349 TBGA W/ ENCRYP RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:536 MHz 程序存儲器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:FBGA-324
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