MPC870CZT66 Freescale Semiconductor, MPC870CZT66 Datasheet - Page 67

IC MPU POWERQUICC 66MHZ 256PBGA

MPC870CZT66

Manufacturer Part Number
MPC870CZT66
Description
IC MPU POWERQUICC 66MHZ 256PBGA
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MPC870CZT66

Processor Type
MPC8xx PowerQUICC 32-Bit
Speed
66MHz
Voltage
3.3V
Mounting Type
Surface Mount
Package / Case
256-PBGA
Family Name
MPC8xx
Device Core
PowerQUICC
Device Core Size
32b
Frequency (max)
66MHz
Instruction Set Architecture
RISC
Supply Voltage 1 (typ)
1.8V
Operating Supply Voltage (max)
1.9V
Operating Supply Voltage (min)
1.7V
Operating Temp Range
-40C to 100C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
256
Package Type
BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
-
Lead Free Status / Rohs Status
Not Compliant

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14 USB Electrical Characteristics
This section provides the AC timings for the USB interface.
14.1
The USB Port uses the transmit clock on SCC1.
1
15 FEC Electrical Characteristics
This section provides the AC electrical specifications for the Fast Ethernet controller (FEC). Note that the
timing specifications for the MII signals are independent of system clock frequency (part speed
designation). Also, MII signals use TTL signal levels compatible with devices operating at either 5.0 or
3.3 V.
15.1
The receiver functions correctly up to a MII_RX_CLK maximum frequency of 25 MHz + 1%. The
reduced MII (RMII) receiver functions correctly up to a RMII_REFCLK maximum frequency of 50 MHz
+ 1%. There is no minimum frequency requirement. In addition, the processor clock frequency must
exceed the MII_RX_CLK frequency – 1%.
Table 31
Freescale Semiconductor
Name
M1_RMII
M2_RMII
US1
US4
USBCLK accuracy should be ±500 ppm or better. USBCLK may be stopped to conserve power.
Num
M1
M2
M3
M4
USBCLK frequency of operation
USBCLK duty cycle (measured at 1.5 V)
provides information on the MII receive signal timing.
USB Interface AC Timing Specifications
Low speed
Full speed
MII and Reduced MII Receive Signal Timing
RMII_REFCLK to RMII_RXD[1:0], RMII_CRS_DV, RMII_RX_ERR
MII_RXD[3:0], MII_RX_DV, MII_RX_ER to MII_RX_CLK setup
MII_RX_CLK to MII_RXD[3:0], MII_RX_DV, MII_RX_ER hold
MII_RX_CLK pulse width high
MII_RX_CLK pulse width low
RMII_RXD[1:0], RMII_CRS_DV, RMII_RX_ERR to RMII_REFCLK
setup
hold
MPC875/MPC870 PowerQUICC™ Hardware Specifications, Rev. 4
Table 30. USB Interface AC Timing Specifications
Characteristic
1
Table 31. MII Receive Signal Timing
Characteristic
Table 30
lists the USB interface timings.
35%
35%
Min
5
5
4
2
All Frequencies
Min
45
Max
65%
65%
USB Electrical Characteristics
48
6
MII_RX_CLK period
MII_RX_CLK period
Max
55
Unit
ns
ns
ns
ns
MHz
Unit
%
67

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