TM Family Datasheet Page 75 of 79 June 2009 – " />
參數(shù)資料
型號： PI7C9X20404GPBNBE
廠商： Pericom
文件頁數(shù)： 73/79頁
文件大小： 0K
描述： IC PCIE PACKET SWITCH 148LFBGA
產(chǎn)品變化通告： Product Discontinuation Notice 22/Jan/2010
標準包裝： 189
系列： GreenPacket™
應用： 封裝開關(guān)，4 端口/4 線道
接口： PCI Express
封裝/外殼： 148-LFBGA
供應商設(shè)備封裝： 148-LFBGA（12x12）
包裝： 托盤
安裝類型： 表面貼裝
PI7C9X20404GP
4Port-4Lane PCI Express Switch
GreenPacket
TM Family
Datasheet
Page 75 of 79
June 2009 – Revision 1.6
Pericom Semiconductor
12.3 AC SPECIFICATIONS
Table 12-3 Transmitter Characteristics
Symbol
Description
Min
Typical
Max.
Unit
Voltage Parameters
Output voltage compliance @ typical swing
VTX-DIFFp (peak-to-peak, single ended)
400
500
600
mV
VTX-DIFFa
VTX-DIFFpp (peak-to-peak, differential)
800
1000
1200
mV
VSW
Supported TX output voltage range (pp,
differential)
400b
1500c
mV
VOL
Low-level output voltage
VTT - 1.5 *VTX-DIFFp
V
VOH
High-level output voltage
VTT - 0.5VTX-DIFFp
V
VTX-CM-AC
Transmit common-mode voltage in L0
0.50
VTT - VTX-DIFFp
1.45
V
VTX-CM-HiZ
Transmit common-mode voltage in L0s
(TX) & L1
VTX-CM-AC
V
VTX-DE-RATIO
De-emphasized differential output voltage
0
-7.96
dB
VTX-IDLE-DIFFp
Electric Idle differential peak voltage
20
mV
VTX-RCV-
DETECT
Voltage change during Receive Detection
VTX-DIFFp
mV
RLTX-DIFF
Transmitter Differential Return loss
10
dB
RLTX-CM
Transmitter Common Mode Return loss
6
dB
ZOSE
Single-ended output impedance
40
50
60
ZTX-DIFF-DC
DC Differential TX Impedance
80
100
120
TTX-RISE, TTX-
FALL
Rise / Fall time of TxP, TxN outputs
80
110d
ps
Jitter Parameters
UI
Unit Interval
399.88
400
400.12
ps
TTX-MAX-JITTER
Transmitter total jitter (peak-to-peak)
0.25e
UI
TTX-EYE
Minimum TX Eye Width (1 - TTX-MAX-
JITTER)
0.75
UI
TTX-EYE-
MEDIAN-to-
MAX-JITTER
Maximum time between the jitter median
and
maximum deviation from the median
0.125
UI
Timing Parameters
LTLAT-10
Transmitter data latency (for n=10)
9
11
UI
LTLAT-20
Transmitter data latency (for n=20)
9
11
UI
LTX-SKEW
Transmitter data skew between any 2 lanes
0
2 +
200ps
UI
TTX-IDLE-SET-
TO-IDLE
Maximum time to transition to a valid
electrical idle after sending an Electrical
Idle ordered set
4
6
ns
TEIExit
Time to exit Electrical Idle (L0s) state into
L0
12
16
ns
TBTEn
Time from asserting BeaconTxEn to
beacon being transmitted on the lane
30
80
ns
TRxDetectEn
Pulse width of RxDetectEn input
9.8
10
10.2
us
TRxDetect
RxDetectEn falling edge to RxDetect
delay
1
2
ns
a. Measured with Vtt = 1.2V, HiDrv=’0’,LowDrv=’0’ and Dtx=’0000’.
b. Minimum swing assumes LoDrv = 1, HiDrv = 0 and Dtx =1100
c. Max swing assumes LoDrv = 0, HiDrv = 1, Dtx = 0010, VTT = 1.8V
d. As measured between 20% and 80% points. Will depend on package characteristics.
e. Measured using PCI Express Compliance Pattern
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