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USB5734 数据表(PDF) 22 Page - Microchip Technology

部件名 USB5734
功能描述  4-Port SS/HS USB Controller Hub
PDF  61 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

USB5734 数据表(HTML) 22 Page - Microchip Technology

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USB5734
DS00001854D-page 22
 2015-2016 Microchip Technology Inc.
3.4.5.3
Configuration 3 - Speed Indicator Mode
When the CFG_STRAP is configured to this mode, the programmable function pins (PROG_FUNC[7:1]) are set to indi-
cate speed status, host type, and provide an SMBus/I2C interface. Table 3-18 details the PROG_FUNC[7:1] pin assign-
ments in this mode.
TABLE 3-18:
CONFIGURATION 3 PROG_FUNC[7:1] FUNCTION ASSIGNMENT
Pin
Function
Buffer
Type
Description
PROG_FUNC1
SPEED_IND1
O12
Port 1 Speed Indicator
Tri-state: Not connected
0: USB 2.0 / USB 1.1
1: USB 3.1 Gen 1
PROG_FUNC2
SPEED_IND2
O6
Port 2 Speed Indicator
Tri-state: Not connected
0: USB 2.0 / USB 1.1
1: USB 3.1 Gen 1
PROG_FUNC3
SPEED_IND3
O12
Port 3 Speed Indicator
Tri-state: Not connected
0: USB 2.0 / USB 1.1
1: USB 3.1 Gen 1
PROG_FUNC4
SMDAT
OD12
SMBus/I2C Data
The SMBus/I2C interface acts as SMBus slave or I2C bridge
dependent on the device configuration. Refer to Section 3.4.1,
"SPI/SMBus/I2C/UART Configuration (I2C_SLV_CFG[1:0])".
PROG_FUNC5
SMCLK
OD12
SMBus/I2C Clock
The SMBus/I2C interface acts as SMBus slave or I2C bridge
dependent on the device configuration. Refer to Section 3.4.1,
"SPI/SMBus/I2C/UART Configuration (I2C_SLV_CFG[1:0])".
PROG_FUNC6
SPEED_IND4
O12
Port 4 Speed Indicator
Tri-state: Not connected
0: USB 2.0 / USB 1.1
1: USB 3.1 Gen 1
PROG_FUNC7
HOST_TYPE
O10
Port 0 USB Host Type
Tri-state: No USB host detected on Port 0
0: USB 3.1 Gen 1 Host detected on Port 0
1: USB 2.0 or USB 1.1 Host detected on Port 0
A USB 2.0 Host is considered detected when the USB 2.0 hub
address register holds a non-zero value. A USB 3.1 Gen 1
Host is considered detected when the USB 3.1 Gen 1 hub
address register holds a non-zero value.



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