mpc8378 Freescale Semiconductor, Inc, mpc8378 Datasheet - Page 69

• Manufacturer Part Number: mpc8378
• Description: Powerquicc Ii Pro Processor
• Manufacturer: Freescale Semiconductor, Inc

15.5.1
The AC timing and voltage parameters must be verified at the measurement point, as specified within
0.2 inches of the package pins, into a test/measurement load shown in
16 Serial ATA (SATA)
This section describes the DC and AC electrical specifications for the serial ATA (SATA) of the
MPC8377E. Note that the external cabled applications or long backplane applications (Gen1x and Gen2x)
are not supported.
16.1
The reference clock is a single ended input clock required for the SATA interface operation. The AC
requirements for the SATA reference clock are listed in the
Freescale Semiconductor
SD_REF_CLK/ SD_REF_CLK
frequency range
SD_REF_CLK/ SD_REF_CLK
clock frequency tolerance
SD_REF_CLK/ SD_REF_CLK
reference clock duty cycle
Requirements for SATA REF_CLK
Parameter
Compliance Test and Measurement Load
The allowance of the measurement point to be within 0.2 inches of the
package pins is meant to acknowledge that package/board routing may
benefit from D+ and D– not being exactly matched in length at the package
pin boundary. If the vendor does not explicitly state where the measurement
point is located, the measurement point is assumed to be the D+ and D–
package pins.
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
D+ Package Pin
D– Package Pin
Table 54. SATA Reference Clock Input Requirements
TX Silicon +
Figure 44. Compliance Test/Measurement Load
Package
Measured at 1.6V
Condition
—
—
NOTE
t
t
CLK_DUTY
t
Symbol
CLK_REF
CLK_TOL
R = 50 Ω
C = C
C = C
TX
TX
Table
–350
Min
40
—
54.
100/125/150
Figure
R = 50 Ω
Typical
50
0
44.
+350
Max
—
60
Serial ATA (SATA)
MHz
Unit
ppm
%
Notes
—
—
1
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