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LAN7430/Y9X bảng dữ liệu(PDF) 57 Page - Microchip Technology

tên linh kiện LAN7430/Y9X
Giải thích chi tiết về linh kiện  Low Power PCIe to Gigabit Ethernet Controller with Integrated Ethernet MAC / PHY
PDF  77 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
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LAN7430/Y9X bảng dữ liệu(HTML) 57 Page - Microchip Technology

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 2018-2019 Microchip Technology Inc.
DS00002631D-page 57
LAN7430/LAN7431
7.6.3
POWER-ON CONFIGURATION STRAP TIMING
Figure 7-4 illustrates the configuration strap timing requirements, in relation to power-on, for applications where
RESET_N is not used at power-on. The operational level (Vopp) for the external power supply is detailed in Section 7.2,
"Operating Conditions**," on page 48.
FIGURE 7-3:
POWER SEQUENCE TIMING (EXTERNAL REGULATORS)
TABLE 7-11:
POWER SEQUENCING TIMING VALUES
Symbol
Description
Min
Typ
Max
Units
tpon
Power supply turn on time
50
ms
tpoff
Power supply turn off time
500
ms
FIGURE 7-4:
POWER-ON CONFIGURATION STRAP TIMING
TABLE 7-12:
POWER-ON CONFIGURATION STRAP TIMING
Symbol
Description
Min
Typ
Max
Units
tcsh
Configuration strap hold after external power supply at
operational level
22
ms
todad
Output drive after straps latched
3
µs
VDDVARIO,
VDDVARIO_B
VDD_SW_IN, VDD_REG_IN,
VDD_OTP, AVDDH_1, AVDDH_2
tpon
tpoff
VDD12CORE, AVDD12, AVDDL_1,
AVDDL_2, VPH, VPTX, VP
All External
Power Supplies
Vopp
Configuration
Strap Pins
tcsh
Output Drive
todad




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