
MPC8315E PowerQUICC II Pro Processor Hardware Specifications, Rev. 0
Freescale Semiconductor
51
PCI
14.1
PCI DC Electrical Characteristics
Table 49 provides the DC electrical characteristics for the PCI interface.
14.2
PCI AC Electrical Specifications
This section describes the general AC timing parameters of the PCI bus. Note that the PCI_CLK or
PCI_SYNC_IN signal is used as the PCI input clock depending on whether the MPC8315E is configured
as a host or agent device.
Table 50 shows the PCI AC timing specifications at 66 MHz.
.
Table 49. PCI DC Electrical Characteristics 1
Parameter
Symbol
Test Condition
Min
Max
Unit
High-level input voltage
VIH
VOUT ≥ VOH (min) or
0.5 x NVDD
NVDD + 0.3
V
Low-level input voltage
VIL
VOUT ≤ VOL (max)
–0.5
0.3
× NVDD
V
High-level output voltage
VOH
NVDD = min,
IOH = –500 μA
0.9 x NVDD
—
V
Low-level output voltage
VOL
NVDD = min,
IOL = 1500 μA
—
0.1 x NVDD
V
Input current
IIN
0 V
≤ VIN ≤ NVDD
—
± 10
μA
Note:
1. Note that the symbol VIN, in this case, represents the NVIN symbol referenced in Table 1 and Table 2. Table 50. PCI AC Timing Specifications at 66 MHz
Parameter
Symbol 1
Min
Max
Unit
Notes
Clock to output valid
tPCKHOV
—6.0
ns
2
Output hold from clock
tPCKHOX
1—
ns
2
Clock to output high impedance
tPCKHOZ
—14
ns
2, 3
Input setup to clock
tPCIVKH
3.3
—
ns
2, 4
Input hold from clock
tPCIXKH
0—
ns
2, 4
Notes:
1. Note that the symbols used for timing specifications herein follow the pattern of 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, tPCIVKH
symbolizes PCI timing (PC) with respect to the time the input signals (I) reach the valid state (V) relative to the PCI_SYNC_IN
clock, tSYS, reference (K) going to the high (H) state or setup time. Also, tPCRHFV symbolizes PCI timing (PC) with respect
to the time hard reset (R) went high (H) relative to the frame signal (F) going to the valid (V) state.
2. See the timing measurement conditions in the
PCI 2.3 Local Bus Specifications.
3. For purposes of active/float timing measurements, the Hi-Z or off state is defined to be when the total current delivered
through the component pin is less than or equal to the leakage current specification.
4. Input timings are measured at the pin.