mpc8378 Freescale Semiconductor, Inc, mpc8378 Datasheet - Page 16

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

DDR1 and DDR2 SDRAM
Table 12
6
This section describes the DC and AC electrical specifications for the DDR SDRAM interface of the
MPC8377E. Note that DDR1 SDRAM is GV
6.1
Table 13
device when GV
16
Time for the device to turn off POR config signals with respect to the assertion of
HRESET
Time for the device to start driving functional output signals multiplexed with the
POR configuration signals with respect to the negation of HRESET
Note:
1
2
3
I/O supply voltage
I/O reference voltage
I/O termination voltage
Input high voltage
Input low voltage
Output leakage current
Output high current (V
PLL lock times
Note:
• The device guarantees the PLL lock if the clock settings are within spec range. The core clock also depends on the core PLL
t
clock is applied to the CLKIN input, and PCI_SYNC_IN period depends on the value of CFG_CLKIN_DIV. See the MPC8379E
Integrated Host Processor Reference Manual for more details.
t
MPC8379E Integrated Host Processor Reference Manual for more details.
POR config signals consists of CFG_RESET_SOURCE[0:3], CFG_LBMUX, and CFG_CLKIN_DIV.
ratio. See
PCI_SYNC_IN
CLKIN
DDR1 and DDR2 SDRAM
is the clock period of the input clock applied to CLKIN. It is only valid when the device is in PCI host mode. See the
provides the PLL lock times.
provides the recommended operating conditions for the DDR2 SDRAM component(s) of the
DDR1 and DDR2 SDRAM DC Electrical Characteristics
Section 23, “Clocking,”
is the clock period of the input clock applied to PCI_SYNC_IN. When the device is In PCI host mode the primary
Parameter
Parameter
Table 13. DDR2 SDRAM DC Electrical Characteristics for GV
DD
OUT
(typ) = 1.8 V
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
Table 11. RESET Initialization Timing Specifications (continued)
= 1.40 V)
Parameter/Condition
for more information.
.
Table 12. PLL Lock Times
Symbol
MV
GV
V
V
V
I
I
OZ
OH
TT
REF
IH
IL
DD
DD
Min
—
(typ) = 2.5 V and DDR2 SDRAM is GV
MV
MV
0.49 × GV
REF
REF
–13.4
1.71
–0.3
Min
–40
+ 0.140
– 0.04
DD
Max
100
Min
MV
—
MV
1
0.51 × GV
GV
REF
REF
DD
Max
1.89
DD
40
—
– 0.140
+ 0.04
(typ) = 1.8 V
+ 0.3
Max
—
4
DD
Unit
μs
Freescale Semiconductor
t
PCI_SYNC_IN
DD
Unit
Unit
ns
mA
μA
V
V
V
V
V
(typ) = 1.8 V.
Notes
Notes
—
Notes
2, 5
—
—
—
1, 3
1
3
4
3