Microchip Technology ATSAMA5D2-ICP User Manual page 37

Table 3-16. USB-A PIO Signal Descriptions
PIO
PD23
3.2.8.7 USB-B Hub Interface
The USB2534 is a low-power, full-featured, OEM configurable, high-speed USB 2.0 compliant hub with four
downstream ports
All downstream USB 2.0 ports include a high current port power controller with LED indicator. Downstream port
power is distributed by four independent power switches MIC2026 at up to 500 mA per port.
Note: Make sure the connected devices' current requirement does not exceed the total current available from 5V
DC (500 mA per port).
3.2.8.7.1 External Chip Reset
When the Reset push button switch is pressed, the device places all pins into their default state. An additional PIO
(PC17) resets the USB2534.
The figure below shows the USB hub implementation.
Figure 3-29. USB Hub Interface
3V3
1
VCC
PC17 A
2
NRST B
GND
GND
3V3
Y5
4
VDD
C122
0.1uF 2
GND
16V
0402 24MHz
DSC1001CI5-024.0000
GND
The picture below shows the location of the two double stacked connectors, J7 and J8.
©
2020 Microchip Technology Inc.
Mnemonic
USBA_VBUS_5V
C123
0.1uF
0402 16V
GND
5
U12
4
Y
3 SN74LVC1G08DBVR
HHSB_n
HHSB_p
R111
GND
R112
R108
3
OUT
3V3
51R
1
STB 0603
3V3
1%
C127
0.1uF
16V
0402
3V3
C126 C128
0.1uF 0.1uF
16V 16V
0402 0402
C146
GND
1uF
16V
0603
Shared
–
3V3
R113
10k
U15
27
VBUS_DET SWAP_USBDN1_DM/PRT_DIS_M1
SWAP_USBDN1_DP/PRT_DIS_P1
30
FLEX_USBUP_DM
31
FLEX_USBUP_DP PRTPWR1/PRTCTL1/BC_EN1
26
PORT1
RESET_N
10k 11
DNP LED0
12k 35
RBIAS
PRTPWR2/PRTCTL2/BC_EN2
33
XTAL1/REFCLK
PORT2
32
XTAL2
15
VDD33
23
C133
VDD33 PRTPWR3/PRTCTL3/BC_EN3
0.1uF
PORT3
16V
0402
GND
10
VDDA33
29
C134
VDDA33 PRTPWR4/PRTCTL4/BC_EN4
36
0.1uF VDDA33
PORT4
16V
0402
37
EP SDA/SMBDATA/NON_REM1
14
VDDCR12
C135
5
NC1
0.1uF 34
NC2 SUSP_IND/LOCAL_PWR/NON_REM0
16V
0402 USB2534I-1080AEN
GND
User Guide
ATSAMA5D2-ICP
Board Components
Signal Description
VBUS insertion detection
1
USBD1_n
2
USBD1_p
12
CMD_PWR1
13
OCS#1
OCS1_N
3
USBD2_n
USBDN2_DM/PRT_DIS_M2
4 USBD2_p
USBDN2_DP/PRT_DIS_P2
16
CMD_PWR2
17 OCS#2
OCS2_N
6
USBD3_n
USBDN3_DM/PRT_DIS_M3
7
USBD3_p
USBDN3_DP/PRT_DIS_P3
18 CMD_PWR3
19
OCS#3
UART_RX/OCS3_N
8 USBD4_n
USBDN4_DM/PRT_DIS_M4
9
USBD4_p
USBDN4_DP/PRT_DIS_P4
20
CMD_PWR4
21
OCS#4
UART_TX/OCS4_N
R120
22
R121
24
SCL/SMBCLK/CFG_SEL0
R122
25
HS_IND/CFG_SEL1
R123
28
R124
DS60001592A-page 37
DIFF90
DIFF90
DIFF90
DIFF90
DIFF90
DIFF90
DIFF90
DIFF90
100k
100k
100k
100k
D4
1k
RED
GND