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REF: BB_SRM_xM BeagleBoard-xM System
Reference Manual
Revision A2
Page 80 of 164
HUB_3V3
HUB_RESET3
R106
10K
nHUB_RESET
R105
100K
HUB_TMS
L11
2.0 Amp/0.05 DCR
1 2
USRBIAS
C184
4.7uF,6.3V,0603
RXP
C178
33pF
R118
10K
C179
33pF
HUB_TDI
L10
2.0 Amp/0.05 DCR
1 2
RXN
CLK24_EN
C196
1uF,10V
HUB_TCK
TXP
U18B
SN74LVC2G06DCKR
3 4
HUB_3V3
R107 10K
TXN
R108 10K
HUB_3V3A
R109
12K,1%
R128 10K
R129 10K
USBD M_2
USBD P2
C197
0.1uF,10V
USBDP_2
HUB_3V3
HUB_3V3
USBD P4USBDP_3
Upstream
Dow nstream
EEPROM
Po w e r
Ethernet
Cloc ks
GPIO + Misc.
JTAG
U15
qf n64-11x27-smsc
LAN9514
USBDP0
59
USBDM0
58
USBDP2
2
USBDP3
4
USBDP4
7
USBDP5
9
USBDM2
1
USBDM3
3
USBDM4
6
USBDM5
8
VBUS_DET
11
PR TCTL2
14
PR TCTL3
16
PR TCTL4
17
PR TCTL5
18
EXRES
50
EEDO
25
EECS
24
EECLK
23
XI
61
XO
60
n_RESET
12
VDD33I O
33
VDD18USBPLL
62
VDD33A
51
VDD18ETHPLL
48
VDD18C ORE
38
VSS(FLAG)
65
VDD33A
5
VDD33A
10
EEDI
26
VDD33I O
27
VDD33I O
19
VDD33A
54
VDD33A
57
VDD18C ORE
15
RXP
52
RXN
53
TXP
55
TXN
56
USBR BIAS
63
CLK24_EN
44
CLK24_OUT
45
AUTOMDIX_EN
41
nFD X_LED/GPIO0
20
nLNKA_LED/GPIO1
21
nSPD_LED/GPIO2
22
GPIO3
35
GPIO4
36
GPIO5
37
GPIO6
42
GPIO7
43
TEST1
13
TEST2
34
TEST3
40
TEST4
47
VDD33I O
39
VDD33I O
46
VDD33A
49
VDD33A
64
nTRST
28
TMS
29
TDI
30
TDO
31
TCK
32
USBD M5USBD M_4
HUB_3V3
XI
VDD18ETHPLL
XO
HUB_VBUS
VDD18USBPLL
AUTOMDIX_EN
VDD18C ORE
USBD M_3USBDM4
USBD M0
HUB_3V3
USBD M2
R101 100K
HUB_3V3
USBD P5USBDP_4
C1760.1uF,10V
C1750.1uF,10V
USBD P0
C185
0.1uF,10V
C1910.1uF,10V
C181
0.1uF,10V
C1920.1uF,10V
Y4
25.000MHz
xt al2-216x60-hcm49
1 2
C182
0.1uF,10V
C1740.1uF,10V
C1930.1uF,10V
R112 1M
C187
1uF,10V
C1940.1uF,10V
C180
0.1uF,10V
C1950.1uF,10V
R63
12.4K,1%,0603
HUB_nTRST
HUB_EXRES
C183
0.1uF,10V
C186
0.1uF,10V
C190
4.7uF,6.3V,0603
Figure 39. USB HUB Design
The LAN9514/LAN9514i is a high performance Hi-Speed USB 2.0 hub with a 10/100
Ethernet controller. The LAN9514/LAN9514i contains an integrated USB 2.0 hub, four
integrated downstream USB 2.0 PHYs, an integrated upstream USB 2.0 PHY, a 10/100
Ethernet PHY, a 10/100 Ethernet Controller.
The main power supply for the LAN9514 is the HUB_3V3 supplied by the dedicated
power regulator. Filtering is required on all input pins. A 1.8V core voltage is derived
form an internal LDO and requires external filtering.
- BeagleBoard-xM Rev A2 1
- System Reference Manual 1
- Table of Contents 5
- Figures 9
- Tables 11
- 1.0 Introduction 13
- 2.0 Change History 15
- 2.2.2 Software Changes 16
- 4.0 BeagleBoard Overview 17
- Figure 2. USB Y-Cable 21
- 6.0 Product Contents 28
- 7.0 BeagleBoard Hookup 30
- BEAGLEBOARD 36
- VOLT_ERR 45
- 8.2.1 Detection 46
- 8.2.2 Indication 46
- 8.2.3 Shutdown 46
- USB_CLIENT / 47
- OTG PORT 47
- DC_POWER 47
- 8.3.1 USB DC Source 48
- 8.3.2 Wall Supply Source 48
- 8.3.3 DC Source Control 48
- 8.3.4 AUX 3.3V Supply 49
- Figure 25. Main Power Rails 55
- 8.7.6 VOCORE_1V3 56
- 8.7.7 VDD2 56
- 8.8.1 VDD_PLL2 57
- 8.8.2 VDD_PLL1 58
- 8.8.3 VDAC_1V8 58
- 8.8.10 EXP_VDD 60
- 8.9.1 Boot Configuration 60
- 8.9.2 RTC Backup Battery 60
- 8.9.3 Power Sequencing 61
- Figure 27. Power Sequencing 61
- 8.9.4.3 User Reset 63
- 8.9.4.4 PWRON 63
- 8.9.5 mSecure Signal 63
- 8.10.1 Overview 64
- 8.10.2 SDRAM Bus 65
- 8.10.3 GPMC Bus 65
- Processor 66
- 8.10.9 GPIO Mapping 69
- 8.10.10 Interrupt Mapping 69
- Figure 33. POP Memory 70
- Figure 34. System Clocks 70
- 8.12.1 32KHz Clock 71
- 8.12.2 26MHz Clock 71
- 8.12.2.1 26MHz Source 71
- 8.12.2.2 TPS65950 Setup 71
- 8.12.2.3 Processor 26MHz 71
- 8.12.3 McBSP_CLKS 72
- 8.13.1 USB OTG Overview 72
- 8.13.2 USB OTG Design 73
- Figure 35. USB OTG Design 73
- 8.13.3 OTG ULPI Interface 73
- 8.13.3.2 TPS65950 Interface 74
- 8.13.4 OTG Charge Pump 74
- 8.13.5 OTG USB Connector 75
- 8.13.6 OTG USB Protection 75
- 8.14.1 Power 76
- 8.14.2 HS USB PHY 77
- Figure 38. USB PHY Design 78
- 8.14.3 USB HUB 79
- Figure 39. USB HUB Design 80
- 8.14.4 USB Port Connectors 81
- 8.14.5 Ethernet 82
- 8.15.1 microSD Power 83
- 8.15.2 Processor Interface 83
- 8.15.3 Card Detect 84
- Figure 43. Audio Circuitry 85
- 8.16.3 Audio Output Jack 86
- 8.16.4 Audio Input Jack 86
- Figure 44. DVI-D Interface 87
- 8.17.2 LCD Power 89
- 8.17.3 TFP410 Power 89
- 8.17.4 TFP410 Framer 89
- 8.17.6.8 DVI to VGA 93
- Table 16. P11 LCD Signals 93
- Table 17. P13 LCD Signals 94
- 8.20.4 Camera Modules 100
- Figure 47. Camera Modules 100
- 8.21.1 Processor Interface 101
- 8.21.2 Level Translator 101
- 8.21.3 RS232 Transceiver 102
- 8.21.4 Connector 102
- 8.22.1 Power Indicator 103
- 8.22.2 PMU Status Indicator 103
- Figure 49. Indicator Design 103
- 8.22.3 User Indicators 104
- 8.22.4 HUB Power Indicator 104
- Figure 50. JTAG Interface 105
- 8.23.1 Processor Interface 105
- Table 21. JTAG Signals 105
- 8.23.2 JTAG Connector 106
- 8.24.1 Processor Interface 106
- 8.24.2 Expansion Signals 108
- 8.24.3 Power 109
- 8.24.4 Reset 109
- 8.24.5 Power Control 109
- Table 24. P11 GPIO Signals 110
- MUX:0 MUX:2 MUX:4 110
- Table 25. P13 GPIO Signals 110
- 8.26.1 MCBSP5 Signals 111
- 8.26.2 MMC3 Signals 112
- 8.26.3 ETK Signals 112
- 8.26.4 HSUSB1 Signals 113
- 8.26.5 Alternate Clock 113
- 8.26.6 HDQ 1-Wire 113
- 8.26.7 ADC 113
- 8.26.8 GPIO Signals 114
- 8.26.9 DMAREQ 114
- Figure 52. Power Connector 115
- Figure 56. DVI-D Connector 118
- DVI-D interface itself 118
- Figure 57. DVI-D Cable 119
- Figure 58. DVI-D Cable 119
- 9.5.1 Connector Pinout 120
- Table 33. P11 LCD Signals 120
- Table 34. P13 LCD Signals 121
- 9.5.2 Camera 122
- Figure 60. Camera Connector 123
- Figure 61. Camera Module 123
- 9.5.3 Audio McBSP2 Port 124
- 9.5.6 Mounting Scenarios 127
- Figure 66. Audio In Plug 128
- Figure 68. Audio Out Plug 129
- Table 39. JTAG Signals 130
- 9.9.1 Battery 132
- Figure 73. Optional Battery 132
- 9.9.2 Battery Installation 132
- Figure 75. Resistor R65 133
- Table 41. DC Power Supplies 135
- Figure 76. DC Power Supply 135
- Figure 79. USB to Bluetooth 138
- 11.0 Mechanical Information 140
- 11.2.1 Mounting Method 141
- 11.2.2 Expansion EEPROM 143
- Table 46. Voltages 145
- 12.1.1 Signal Access Points 146
- Table 47. Troubleshooting 147
- 13.0 Known Issues 148
- 15.0 Schematics 151
- 16.0 Bills of Material 163
- 17.0 PCB Information 164
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