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USB2524 数据表(PDF) 44 Page - Microchip Technology

部件名 USB2524
功能描述  USB MultiSwitch Hub
PDF  58 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB2524 数据表(HTML) 44 Page - Microchip Technology

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USB2524
DS00001588B-page 44
2013 - 2016 Microchip Technology Inc.
Note 9-1
When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than
100mA from the upstream USB power source during t1+t5.
9.1.1.2
RESET_N for EEPROM Configuration
TABLE 9-1:
RESET_N TIMING FOR DEFAULT/STRAP OPTION MODE
Name
Description
MIN
TYP
MAX
Units
t1
RESET_N Asserted.
1
sec
t2
Strap Setup Time
16.7
nsec
t3
Strap Hold Time.
16.7
1400
nsec
t4
hub outputs driven to inactive logic states
1.5
2.0
sec
t5
USB Attach (See Note 9-1)
100
msec
t6
Host acknowledges attach and signals USB
Reset.
100
msec
t7
USB Idle.
undefined
msec
t8
Completion time for requests (with or without data
stage).
5
msec
FIGURE 9-2:
RESET_N TIMING FOR EEPROM MODE
TABLE 9-2:
RESET_N TIMING FOR EEPROM MODE
Name
Description
MIN
TYP
MAX
Units
t1
RESET_N Asserted.
1
sec
t2
Hub Recovery/Stabilization.
500
sec
t3
EEPROM Read / Hub Config.
2.0
99.5
msec
t4
USB Attach (See Note 9-2)
100
msec
t1
t2
t4
t5
t6
t7
RESET_N
VSS
Hardware
reset
asserted
Read Strap
Options
Read EEPROM
+
Set Options
Attach
USB
Upstream
USB Reset
recovery
Idle
Start
completion
request
response
t3



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