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參數(shù)資料
| 型號(hào)： | PI7C9X7954AFDE |
| 廠商： | Pericom |
| 文件頁數(shù)： | 62/70頁 |
| 文件大小： | 0K |
| 描述： | IC PCIE-TO-UART BRIDGE 128LQFP |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 應(yīng)用： | PCIe至UART橋接 |
| 接口： | 高級(jí)配置電源接口（ACPI） |
| 電源電壓： | 1.8V, 3.3V |
| 封裝/外殼： | 128-LQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 128-LQFP（14x14） |
| 包裝： | 托盤 |
| 安裝類型： | 表面貼裝 |
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PI7C9X7954
PCI Express Quad UART
Datasheet
Page 65 of 70
May 2013 – Revision 1.4
Pericom Semiconductor
9. ELECTRICAL SPECIFICATION
9.1.
ABSOLUTE MAXIMUM RATINGS
Table 9-1 Absolute maximum ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature
-65oC to 150oC
Ambient Temperature with power applied
-40oC to 85oC
PCI Express supply voltage to ground potential (VDDA, VDDC, and
VDDCAUX)
-0.3v to 3.0v
PCI supply voltage to ground potential (VDDR)
-0.3v to 3.6v
DC input voltage for PCI Express signals
-0.3v to 3.0v
DC input voltage for PCI signals
-0.5v to 5.75v
Note:
Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any conditions above those
indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods of time may affect reliability.
9.2.
DC SPECIFICATIONS
Table 9-2 DC electrical characteristics
Power Pins
Min.
Typ.
Max.
VDDA
1.6v
1.8v
2.0v
VDDC
1.6v
1.8v
2.0v
VDDCAUX
1.6v
1.8v
2.0v
VTT
VDDC
2.0v
VDDR
3.0v
3.3v
3.6v
VDDA: analog power supply for PCI Express Interface
VDDC: digital power supply for the core
VTT: termination power supply for PCI Express Interface
VDDCAUX: auxiliary power supply
VDDR: digital power supply for the I/O
The typical power consumption of PI7C9X7954 is about 0.8 watt.
9.3.
AC SPECIFICATIONS
Table 9-3 Transmitter Characteristics
Symbol
Description
Min
Typical
Max.
Unit
Voltage Parameters
VTX-DIFFa
Output voltage compliance @ typical swing
VTX-DIFFp (peak-to-peak, single ended)
400
500
600
mV
VTX-DIFFpp (peak-to-peak, differential)
800
1000
1200
mV
VSW
Supported TX output voltage range (pp,
differential)
700b
1400c
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
13-0093
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