參數(shù)資料
型號: MPC8308CZQADD
廠商: Freescale Semiconductor
文件頁數(shù): 30/83頁
文件大?。?/td> 0K
描述: MPU POWERQUICC II PRO 473MAPBGA
標準包裝: 84
系列: MPC83xx
處理器類型: 32-位 MPC83xx PowerQUICC II Pro
速度: 266MHz
電壓: 1V
安裝類型: 表面貼裝
封裝/外殼: 473-LFBGA
供應(yīng)商設(shè)備封裝: 473-MAPBGA(19x19)
包裝: 托盤
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
36
Freescale Semiconductor
PCI Express
Absolute delta of DC
common mode voltage
during L0 and electrical idle
VTX-CM-DC- ACTIVE-
IDLE-DELTA
|VTX-CM-DC (during L0) - VTX-CM-Idle-DC
(During Electrical Idle)|<=100 mV
VTX-CM-DC = DC(avg) of |VTX-D+ +
VTX-D-|/2 [L0]
VTX-CM-Idle-DC = DC(avg) of |VTX-D+ +
VTX-D-|/2 [Electrical Idle]
0
100
mV
2
Absolute delta of DC
common mode between D+
and D–
VTX-CM-DC-LINE-
DELTA
|VTX-CM-DC-D+ - VTX-CM-DC-D-| <= 25 mV
VTX-CM-DC-D+ = DC(avg) of |VTX-D+|
VTX-CM-DC-D- = DC(avg) of |VTX-D-|
0—
25
mV
2
Electrical idle differential
peak output voltage
VTX-IDLE-DIFFp
VPEEIDPTX = |VTX-IDLE-D+ -VTX-IDLE-D-|
<= 20 mV
0—
20
mV
2
Amount of voltage change
allowed during receiver
detection
VTX-RCV-DETECT The total amount of voltage change that
a transmitter can apply to sense whether
a low impedance Receiver is present.
—600
mV
6
TX DC common mode
voltage
VTX-DC-CM
The allowed DC Common Mode voltage
under any conditions.
—3.6
V
6
TX short circuit current limit
ITX-SHORT
The total current the Transmitter can
provide when shorted to its ground
——
90
mA
Minimum time spent in
electrical idle
TTX-IDLE-MIN
Minimum time a Transmitter must be in
Electrical Idle Utilized by the Receiver to
start looking for an Electrical Idle Exit
after successfully receiving an Electrical
Idle ordered set
50
UI
Maximum time to transition
to a valid electrical idle after
sending an electrical idle
ordered set
TTX-IDLE-SET-TO-ID
LE
After sending an Electrical Idle ordered
set, the Transmitter must meet all
Electrical Idle Specifications within this
time. This is considered a debounce time
for the Transmitter to meet Electrical Idle
after transitioning from L0.
——
20
UI
Maximum time to transition
to valid TX specifications
after leaving an electrical
idle condition
TTX-IDLE-TO-DIFF-D
ATA
Maximum time to meet all TX
specifications when transitioning from
Electrical Idle to sending differential
data. This is considered a debounce
time for the TX to meet all TX
specifications after leaving Electrical Idle
——
20
UI
Differential return loss
RLTX-DIFF
Measured over 50 MHz to 1.25 GHz.
12
dB
4
Common mode return loss
RLTX-CM
Measured over 50 MHz to 1.25 GHz.
6
dB
4
DC differential TX
impedance
ZTX-DIFF-DC
TX DC Differential mode Low
Impedance
80
100
120
Transmitter DC impedance
ZTX-DC
Required TX D+ as well as D- DC
Impedance during all states
40
Lane-to-Lane output skew
LTX-SKEW
Static skew between any two Transmitter
Lanes within a single Link
500 + 2
UI
ps
Table 34. Differential Transmitter (TX) Output Specifications (continued)
Parameter
Symbol
Comments
Min
Typical
Max
Units Note
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