參數(shù)資料
型號: MPC8379E-RDB
廠商: Freescale Semiconductor
文件頁數(shù): 107/117頁
文件大?。?/td> 0K
描述: BOARD REFERENCE FOR MPC837
標(biāo)準(zhǔn)包裝: 1
系列: PowerQUICC II™ PRO
類型: MPU
適用于相關(guān)產(chǎn)品: MPC8379
所含物品:
MPC8379E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
Freescale Semiconductor
9
This figure shows the undershoot and overshoot voltages at the interfaces of the device.
Figure 2. Overshoot/Undershoot Voltage for GVDD/LVDD/OVDD/LBVDD
2.1.3
chip
Output Driver Characteristics
This table provides information on the characteristics of the output driver strengths. The values are
preliminary estimates.
Table 4. Output Drive Capability
Driver Type1
Output Impedance (
Ω)
Supply Voltage
Local bus interface utilities signals
45
LBVDD = 2.5 V, 3.3 V
40
LBVDD = 1.8 V
PCI signals
25
OVDD = 3.3 V
DDR1 signal
18
GVDD = 2.5 V
DDR2 signal
18
GVDD = 1.8 V
eTSEC 10/100/1000 signals
45
LVDD = 2.5 V, 3.3 V
DUART, system control, I2C, JTAG, SPI, and USB
45
OVDD = 3.3 V
GPIO signals
45
OVDD = 3.3 V
Note:
1. Specialized SerDes output capabilities are described in the relevant section of the specification (such as SATA)
GND
GND – 0.3 V
GND – 0.7 V
Not to Exceed 10%
G/L/O/LBVDD + 20%
G/L/O/LBVDD
G/L/O/LBVDD + 5%
of tinterface1
1. Note that tinterface refers to the clock period associated with the bus clock interface.
VIH
VIL
Note:
2. Note that with the PCI overshoot allowed (as specified above), the device does
not fully comply with the maximum AC ratings and device protection guideline outlined in
the
PCI Rev. 2.3 Specification (Section 4.2.2.3).
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