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USB2513 数据表(PDF) 37 Page - Microchip Technology

部件名 USB2513
功能描述  USB 2.0 Hi-Speed Hub Controller
PDF  57 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB2513 数据表(HTML) 37 Page - Microchip Technology

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2022 Microchip Technology Inc. and its subsidiaries
DS00001692D-page 37
USB251xB/xBi
5.5.1.2
RESET_N for EEPROM Configuration
Note 5-2
10 ms for hubs, 50 ms for root ports.
FIGURE 5-2:
RESET_N TIMING FOR EEPROM MODE
Name
Description
MIN
TYP
MAX
Units
t1
RESET_N asserted
1
s
t2
CFG_SEL[1:0] setup time
16.7
ns
t3
CFG_SEL[1:0] hold time
16.7
1400
ns
t4
Hub recovery/stabilization
500
s
t5
EEPROM read (hub configuration)
40
ms
t6
USB attach (see notes)
40
ms
t7
Host acknowledges attach and signals USB reset
100
ms
t8
USB_RESET
host-
defined
ms
t9
USB_RESET state
Note 5-2
ms
t10
USB Reset Recovery
10
ms
Note:
• When in bus-powered mode, the hub and its associated circuitry must not consume more than 100 mA from the
upstream USB power source during t6+t7+t8+t9.
• All power supplies must have reached the operating levels mandated in Section 6.0, "DC Parameters", prior to
(or coincident with) the assertion of RESET_N.
t1
t5
t7
t8
t9
RESET_N
VSS
Hardware reset
asserted
Read I2C
EEPROM
Attach USB
upstream
Attach
Debounce
Interval
USB_RESET
USB_RESET
State
Read
CFG_SEL[1:0]
t2
t3
t6
valid
CFG_SEL[2:0]
VSS
don’t care
don’t care
t4
t10
USB Reset
Recovery



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