1
CONTENTS
Chapter 1
Introduction ..................................................................................................................... 3
1.1 Features ..................................................................................................................................................................... 3
1.2 Getting Help .............................................................................................................................................................. 4
Chapter 2
Architecture ..................................................................................................................... 5
2.1 Block Diagram .......................................................................................................................................................... 6
Chapter 3
Pin Description ................................................................................................................ 7
3.1 HSMC Expansion Connector .................................................................................................................................... 7
Chapter 4
Components ................................................................................................................... 14
4.1 RGMII Ethernet PHY ............................................................................................................................................. 14
4.2 USB 2.0 OTG PHY ................................................................................................................................................. 16
4.3 RS-485/RS-232 Interface ........................................................................................................................................ 17
4.4 CAN Interface ......................................................................................................................................................... 21
4.5 GPIO Interface ........................................................................................................................................................ 21
4.6 DVI Output ............................................................................................................................................................. 22
4.7 SD/SDIO/MMC reader ........................................................................................................................................... 24
4.8 EEPROM ................................................................................................................................................................ 25
4.9 Power ...................................................................................................................................................................... 25
Chapter 5
Appendix ....................................................................................................................... 27
5.1 Revision History ..................................................................................................................................................... 27
5.2 Copyright Statement................................................................................................................................................ 27
2
Chapter 1
Introduction
The HSMC Communication card adds key interfaces to support a wide range of industrial, image
processing, scientific and measurement requirements. From 10/100/1000 Ethernet PHY, to CAN,
RS232, RS485, the HSMC Communication card can quickly get you started with your designs. Also
included is a digital DVI transmitter port to display FPGA driven video content. The card allows
users to evaluate included interfaces with any HSMC interface host boards.
1.1 Features
Figure 1-1 shows the photo of the HSMC Communication card. The important features are listed
below:
RGMII Ethernet PHY, RJ-45 connector
USB 2.0 OTG PHY with ULPI
RS-485 x2 with 2x5 0.1″header
CAN x2 with DB9 connector
GPIO with 2x3 0.1″connector
SD Card Socket
DVI Transmitter with DVI-D Connector
HSMC identification is facilitated via the on board I2C EEPROM.
3
Figure 1-1 Picture of the HSMC Communication card
1.2 Getting Help
Here are some places to get help if you encounter any problem:
Email to support@terasic.com
Taiwan & China: +886-3-550-8800
Korea : +82-2-512-7661
Japan: +81-428-77-7000
4
Chapter 2
Architecture
This chapter describes the architecture of the HSMC Communication card including block diagram
and components.
A photograph of the HSMC Communication card is shown in Figure 2-1 and Figure 2-2. It depicts
the layout of the board and indicates the location of the connectors and key components.
Figure 2-1 The HSMC Communication PCB and component diagram
Figure 2-2 The HSMC Communication card back side
5
2.1 Block Diagram
Figure 2-3 shows the block diagram of the HSMC Communication card.
Figure 2-3 Block diagram of the HSMC Communication card
6
Chapter 3
Pin Description
This chapter describes the detailed information of the connector interfaces, and the pin description
on the HSMC Communication card.
3.1 HSMC Expansion Connector
The HSMC Communication card contains a HSMC connector. Figure 3-1, Figure 3-2 and Figure
3-3 show the pin-outs of the HSMC connector on the Mass Storage and Video card.
7
Figure 3-1 Pin-outs of Bank 1 on the HSMC connector
8
Figure 3-2 Pin-outs of Bank 2 on the HSMC connector
9
Figure 3-3 Pin-outs of Bank 3 on the HSMC connector
Table 3-1 shows the pin description of the HSMC connector.
10
Table 3-1 The pin mappings of the HSMC connector
HSMC Expansion Connector
Pin Number
Signal Name
Direction
Function
134
CAN_0_RX
Output
CAN Receive Data Output
149
CAN_0_TX
Input
CAN Transmit Data Input
146
CAN_1_RX
Output
CAN Receive Data Output
97
CAN_1_TX
Input
CAN Transmit Data Input
157
DVI_CLK
Input
DVI Transmitter CLK
138
DVI_DATA[0]
Input
DVI Transmitter Data Bit 0
137
DVI_DATA[1]
Input
DVI Transmitter Data Bit 1
119
DVI_DATA[10]
Input
DVI Transmitter Data Bit 10
115
DVI_DATA[11]
Input
DVI Transmitter Data Bit 11
113
DVI_DATA[12]
Input
DVI Transmitter Data Bit 12
107
DVI_DATA[13]
Input
DVI Transmitter Data Bit 13
103
DVI_DATA[14]
Input
DVI Transmitter Data Bit 14
101
DVI_DATA[15]
Input
DVI Transmitter Data Bit 15
92
DVI_DATA[16]
Input
DVI Transmitter Data Bit 16
90
DVI_DATA[17]
Input
DVI Transmitter Data Bit 17
86
DVI_DATA[18]
Input
DVI Transmitter Data Bit 18
84
DVI_DATA[19]
Input
DVI Transmitter Data Bit 19
133
DVI_DATA[2]
Input
DVI Transmitter Data Bit 2
91
DVI_DATA[20]
Input
DVI Transmitter Data Bit 20
89
DVI_DATA[21]
Input
DVI Transmitter Data Bit 21
85
DVI_DATA[22]
Input
DVI Transmitter Data Bit 22
83
DVI_DATA[23]
Input
DVI Transmitter Data Bit 23
128
DVI_DATA[3]
Input
DVI Transmitter Data Bit 3
126
DVI_DATA[4]
Input
DVI Transmitter Data Bit 4
122
DVI_DATA[5]
Input
DVI Transmitter Data Bit 5
116
DVI_DATA[6]
Input
DVI Transmitter Data Bit 6
110
DVI_DATA[7]
Input
DVI Transmitter Data Bit 7
104
DVI_DATA[8]
Input
DVI Transmitter Data Bit 8
102
DVI_DATA[9]
Input
DVI Transmitter Data Bit 9
139
DVI_DE
Input
DVI Transmitter Data Valid
143
DVI_HSYNC
Input
DVI Transmitter HSYNC
67
DVI_INTn_OUT
Output
DVI Transmitter VSYNC
151
DVI_VSYNC
Input
RGMII Receive Clock
40
ENET_CONN_RX_CLK
Output
RGMII Transmit Clock
155
ENET_GTX_CLK
Input
Management Interrupt
98
ENET_INTn
Output
Management Data Clock
41
ENET_MDC
Input
Management Data
44
ENET_MDIO
Bi-directional
Ethernet Hardware Reset
56
ENET_RESETn
Input
RGMII Receive Control
11
80
ENET_RX_DV
Output
RGMII Receive Data bit 0
74
ENET_RXD[0]
Output
RGMII Receive Data bit 1
78
ENET_RXD[1]
Output
RGMII Receive Data bit 2
53
ENET_RXD[2]
Output
RGMII Receive Data bit 3
50
ENET_RXD[3]
Output
RGMII Transmit Control
59
ENET_TX_EN
Input
RGMII Transmit Data bit 0
68
ENET_TXD[0]
Input
RGMII Transmit Data bit 1
48
ENET_TXD[1]
Input
RGMII Transmit Data bit 2
54
ENET_TXD[2]
Input
RGMII Transmit Data bit 3
47
ENET_TXD[3]
Input
RS-485/RS-232 Receive Data
152
HSMC_0_RXD
Output
RS-485/RS-232 Transmit
145
HSMC_0_TXD
Input
RS-485/RS-232 Receive
114
HSMC_1_RXD
Output
RS-485/RS-232 Transmit
131
HSMC_1_TXD
Input
EEPROM Serial Clock
34
HSMC_SCL
Input
EEPROM Serial Address/
33
HSMC_SDA
Bi-directional
GPIO Input Data
150
PIO_0_IN
Output
GPIO Bi-directional Data
55
PIO_0_OUT[0]
Bi-directional
GPIO Bi-directional Data
71
PIO_0_OUT[1]
Bi-directional
GPIO Bi-directional Data
61
PIO_0_OUT[2]
Bi-directional
RS-485 Request to Send
127
RS485_0_RTS
Input
RS-485 Request to Send
121
RS485_1_RTS
Input
SD Card Detection
158
SD_CD
Output
SD Card Reader Clock
95
SD_CLK
Input
SD Card Reader Command
144
SD_CMD
Bi-directional
SD Card Reader Readback
96
SD_CONN_RCLK
Output
from Level Translator
140
SD_DATA[0]
Bi-directional
SD Card Reader Data Bit
125
SD_DATA[1]
Bi-directional
SD Card Reader Data Bit
120
SD_DATA[2]
Bi-directional
SD Card Reader Data Bit
108
SD_DATA[3]
Bi-directional
SD Card Reader Data Bit
156
SD_WP
Output
SD Card Write Protect
39
USB_CONN_CLK
Output
USB 60MHz Reference
43
USB_DATA[0]
Bi-directional
USB Data bit 0
49
USB_DATA[1]
Bi-directional
USB Data bit 1
72
USB_DATA[2]
Bi-directional
USB Data bit 2
66
USB_DATA[3]
Bi-directional
USB Data bit 3
62
USB_DATA[4]
Bi-directional
USB Data bit 4
65
USB_DATA[5]
Bi-directional
USB Data bit 5
73
USB_DATA[6]
Bi-directional
USB Data bit 6
77
USB_DATA[7]
Bi-directional
USB Data bit 7
60
USB_DIR
Output
USB Data Direction
109
USB_NXT
Output
USB NXT
12
42
USB_STP
Input
USB STP
132
-
-
-
79
-
-
-
Table 3-2 below outlines HSMC power levels that host boards guarantee from on-board power
supplies (minimum) according to the HSMC specification. Theses power rails will be delivered via
designated pins on the HSMC connector.
Table 3-2 HSMC Power Levels
WAX
Voltage
Current Rating
12V
1.0A
12.0W
3.3V_HSMC
2.0A
6.6W
Total
Wattage
18.6W
13
Chapter 4
Components
This chapter gives a simple description of the on board components, such as operational mode,
signaling standard. For more detailed information you could refer to its datasheet which is available
on manufacturer’s website or from our provided system CD.
4.1 RGMII Ether net PHY
This card supports copper RJ-45 10/100/1000 base-T Ethernet using an external Marvell 88E1111.
The PHY-to-MAC interface employs an RGMII interface. A block diagram is shown in Figure 4-1
where the MAC is found in the FPGA.
Figure 4-1 Marvell RGMII Diagram
This device uses 2.5V and 1.1V power rails and requires a 25MHz reference clock (+/-50ppm
tolerance) to be driven from a dedicated oscillator. It interfaces to a HALO HFJ11-1G02E model
RJ-45 with internal magnetics. The bootstrapping pins are wired to default to “RGMII to copper
mode” (HWCFG_MODE[3:0] = 1011). The table below summarizes the pins of the 10/100/1000
Ethernet interface. Signal names and directions are relative to the host board.
Table 4-1 Ethernet PHY Interface I/O
Signal Name
Description
Type
ENET_GTX_CLK
125MHz GMII Transmit
2.5V CMOS output
Clock
ENET_TX_CLK
25MHz
MII
Transmit
n/a
Clock
ENET_TX_ER
GMII Transmit Error
n/a (tie to GND)
14
ENET_TX_EN
GMII Transmit Enable
2.5V CMOS output
ENET_TXD(7:4)
GMII Transmit Data Bus
GND
ENET_TXD(3:0)
RGMII Transmit Data Bus
2.5V CMOS output
ENET_RX_CLK
GMII Receive Clock
2.5V CMOS input
ENET_RX_ER
GMII Receive Error
n/a
ENET_RX_DV
RGMII Receive Control
2.5V CMOS input
ENET_RXD(7:4)
GMII Receive Data Bus
n/a
ENET_RXD(3:0)
RGMII Receive Data Bus
2.5V CMOS input
ENET_CRS
GMII Carrier Sense
n/a
ENET_COL
GMII Collision
n/a
ENET_RESETn
Reset
2.5V CMOS input
ENET_MDC
Management
Bus
Data
2.5V CMOS input
Clock
ENET_MDIO
Management Bus Data
2.5V CMOS input
ENET_INTn
Management Bus Interrupt
2.5V CMOS input
ENET_MDI(3:0)p/n
Media Dependent Interface
n/a
(to
RJ-45
and
transformers)
ENET_S_CLKp/n
SGMII 625MHz Clock
n/a
ENET_S_OUTp/n
SGMII Receive Data
n/a
ENET_S_INp/n
SGMII Receive Data
n/a
ENET_LED_LINK1
10Mb Link LED
n/a (driven to LED)
100Mb Link LED
n/a (driven to LED)
1000Mb Link LED
n/a (driven to LED)
Duplex/Collision LED
n/a
ENET_LED_RX
RX Data Active LED
n/a (driven to LED)
ENET_LED_TX
TX Data Active LED
n/a (driven to LED)
TMS
JTAG Mode Select
n/a
TCK
JTAG Clock
n/a
TDO
JTAG Data Out
n/a
TDI
JTAG Data In
n/a
TRSTn
JTAG Reset
Pull to GND with 4.7k_
CONFIG0
Mode configuration pin 0
n/a (tie to GND)
CONFIG1
Mode configuration pin 1
n/a (tie to GND)
CONFIG2
Mode configuration pin 2
n/a (tie to 2.5V)
CONFIG3
Mode configuration pin 3
n/a (tie to GND)
CONFIG4
Mode configuration pin 4
n/a (tie to LED_DUPLEX)
CONFIG5
Mode configuration pin 5
n/a (tie to LED_LINK100)
CONFIG6
Mode configuration pin 6
n/a (tie to LED_RX)
0
ENET_LED_LINK1
00
ENET_LED_LINK1
000
ENET_LED_DUPL
EX
15
VDDO
I/O Power Pin
2.5V
VDDH
I/O Power Pin
2.5V
VDDX
I/O Power Pin
2.5V
AVDD
Analog Power Input
2.5V
DVDD
Digital Power Input
1.2V
GND
-
Ground
Ethernet PHY
The 88E1111 uses a multi-level bootstrap encoding scheme to allow a small set of pins (7) to set
up a very large number of default settings within the device. The level encoding scheme is
shown in the table below from the Marvel datasheet. The CONFIG[6:0] signals should be tied
directly to VDDO, GND or the defined Ethernet pin as described below.
Table 4-2 Ethernet PHY Bootstrap Encoding
Pin
Bit[2:0]
VDDO
111
LED_LINK10
110
LED_LINK100
101
LED_LINK1000
100
LED_DUPLEX
011
LED_RX
010
LED_TX
001
VSS
000
Table 4-3 Ethernet PHY Bootstrap Settings
Pin
Pin Connection
Setting
Definition
CONFIG0
GND
000
MDIO PHY Address bit (2:0) = 000
CONFIG1
GND
000
Enable Pause = 0, PHY Address bits (4:3) = 00
CONFIG2
VDDO (2.5V)
111
Auto-negotiate, advertise all capabilities, prefer
CONFIG3
GND
000
Disable crossover, disable CLK125
CONFIG4
LED_DUPLEX
011
Hardware Config Mode Reg (2:0) = 011
CONFIG5
LED_LINK100
101
Disable fiber/copper autosel, enable sleep mode
CONFIG6
LED_RX
010
(enable energy detect), Hardware Config Mode
4.2 USB 2.0 OTG PHY
The USB 2.0 PHY interface supports the On-The-Go (OTG) protocol and is pinned out with
UTMI+Low Pin Interface (ULPI). The USB transceiver will be routed to a mini-AB type connector.
16
Figure 4-2 USB 2.0 Block Diagram
4.3 RS-485/RS-232 Interface
There are two multiplexer circuit allowing the ability to switch between an RS-232 or RS-485
interface. This interface contains two independent RS-485 ports and two independent RS-232 ports.
Each RS-485 interface is routed to a 2x5 0.1” header and a DB-9 female connector. One RS-232
interface is routed to a 2x5 0.1” header and the second RS-232 interface is routed to a DB-9 male
connector. A jumper is used on the board to select between RS-485 port 0 or RS-232 port 0 and RS485 port 1 or RS-232 port 1.
17
Figure 4-3 RS-485/RS-232 Interface Block Diagram
RS-485 port 0 is connected to the 2x5 header and DB-9 connector as described in the table
below, pin-out and signal description are relative to the header:
Table 4-4 RS485 Port 0 Interface Connector Pin-out
Pin 2x5
Name
Direction
Description
1
NC
-
Not Connected
2
5.0V
Power
5V
3
NC
-
Not Connected
4
NC
-
Not Connected
5
B
Bidirectional
inverting driver
output/receiver input.
6
A
Bidirectional
Non-inverting driver
output/receiver input.
7
DE
Input
Driver Enable
8
NC
-
Not Connected
9
GND
Power
Signal Ground
10
NC
-
Not Connected
18
Pin DB9
Name
Direction
Description
1
GND
Power
Signal Ground
2
NC
-
Not Connected
3
B
Bidirectional
inverting driver
output/receiver input.
4
DE
Input
Driver Enable
5
GND
Power
Signal Ground
6
5.0V
Power
5V
7
NC
-
Not Connected
8
A
Bidirectional
Non-Inverting driver
output/receiver input.
9
-
-
-
RS-485 port 1 is a profibus type connection. It is connected to the 2x5 header and DB-9
connector as described in the table below, pin-out and signal description are relative to the
header:
Table 4-5 RS485 (profibus) Port 1 Interface Connector Pin-out
Pin 2x5
Name
Direction
Description
1
NC
-
Not Connected
2
5.0V
Power
5V
3
NC
-
Not Connected
4
NC
-
Not Connected
5
A
Bidirectional
Non-inverting driver
output/receiver input.
6
B
Bidirectional
Inverting driver
output/receiver input.
7
DE
Input
Driver Enable
8
NC
-
Not Connected
9
GND
Power
Signal Ground
10
NC
-
Not Connected -
Pin DB9
Name
Direction
Description
1
GND
Power
Signal Ground
2
NC
-
Not Connected
3
A
Bidirectional
Non-inverting driver
output/receiver input.
4
DE
Input
Driver Enable
5
GND
Power
Signal Ground
6
5.0V
Power
5V
7
NC
-
Not Connected
8
B
Bidirectional
Inverting driver
output/receiver input.
9
-
-
19
RS-232 port 0 is routed to the DB-9 connector as described in Table 4-6 below, pin-out and signal
description are relative to the connector:
Table 4-6 RS232 Port 0 Interface Connector Pin-out
Pin DB9
Name
Direction
Description
1
NC
-
Not Connected
2
RXD
Output
Receive Data Line
3
TXD
Input
Transmit Data Line
4
NC
-
Not Connected
5
GND
Power
Signal Ground
6
NC
-
Not Connected
7
NC
-
Not Connected
8
NC
-
Not Connected
9
NC
-
Not Connected
RS-232 port 1 is routed to the 2x5 header as described in the table below, pin-out and signal
description are relative to the connector:
Table 4-7 RS232 Port 1 Interface Connector Pin-out
Pin DB9
Name
Direction
Description
1
NC
-
Not Connected
2
NC
-
Not Connected
3
RXD
Output
Receive Data Line
4
NC
-
Not Connected
5
TXD
Input
Transmit Data Line
6
NC
-
Not Connected
7
NC
-
Not Connected
8
NC
-
Not Connected
9
GND
Power
Signal Ground
10
NC
-
Not Connected
20
4.4 CAN Interface
There are two CAN interfaces from the HSMC to two DB9 male connectors.
Figure 4-4 CAN Interface Block Diagram
Both CAN circuits are connected the same.
Table 4-8 CAN DB9 Connector Pin-out
Pin DB9
Name
Direction
Description
1
NC
-
Not Connected
2
CANL
2
CAN bus line low
3
GND
Power
Signal Ground
4
NC
-
Not Connected
5
GND
Power
Signal Ground
6
GND
Power
Signal Ground
7
CANH
7
CAN bus line high
8
NC
-
Not Connected
9
NC
-
Not Connected
4.5 GPIO Interface
There is one 2x3 0.1” header for a GPIO interface. This interface contains 4 single ended lines
that can be used for general purpose I/O. However there are some limitations on the IO direction.
GPIO_Out lines can be used for bi-directional signals, however GPIO_Input can only be used as
a host board input signal.
21
Figure 4-5 GPIO Interface Block Diagram
The GPIO head contains 6 pins with the following pin-out:
Table 4-9 GPIO Header Pin-out
Pin
Name
Direction
Description
1
GPIO_In
Input
GPIO Input
2
GPIO_Out[0]
Bi-Dir
GPIO Bi-directional 0
3
GPIO_Out[1]
Bi-Dir
GPIO Bi-directional 1
4
GPIO_Out[2]
Bi-Dir
GPIO Bi-directional 2
5
+3.3V
-
3.3V Power
6
GND
-
Ground
4.6 DVI Output
DVI Output with be able to support standard DVI-D interface, targeting UXGA resolution, that
implies pixel rate of 165MHz. The block diagram is presented on the next figure:
*I2C can be shared with other devices
Figure 4-6 DVI Interface Block Diagram
22
The purpose of DVI transmitter is to arrange the inbound pixels and generic sync signals to be
compatible with DVI interface standard and transmit the encoded data over 4 differential lanes.
These lanes are routed to standard DVI connector so it can be connected to imaging device with
standard cable. The image data is loaded to transmitter through HSMC interface accompanied by
required line and field synchronization signals.
Transmitter has I2C port that is used for configuration and diagnostic tasks and it can be shared
with other on board I2C enabled devices. In addition this interface is used to communicate with
DDC enabled monitors.
Here is the pin description of DVI connector:
Table 4-10 DVI Connector Pin-out
Pin
Name
Direction
Description
1
TMDS Data2-
Out
Digital red -
2
TMDS Data2+
Out
Digital red +
3
TMDS Data2/4 Shield
-
shield
4
TMDS Data4-
Out
Not in use
5
TMDS Data4+
Out
Not in use
6
SCL
Out
DDC channel clock
7
SDA
Bidir
DDC channel data
8
Analog vertical sync
Out
Not in use
9
TMDS Data1-
Out
Digital green -
10
TMDS Data1+
Out
Digital green +
11
TMDS Data1/3 Shield
-
shield
12
TMDS Data3-
Out
Not in use
13
TMDS Data3+
Out
Not in use
14
+5V
Power
Power for monitor during stand-by
15
Ground
Power
Return for +5V (pin 14)
16
Hot plug detect
In
Hot plug detect
17
TMDS Data0-
Out
Digital blue -
18
TMDS Data0+
Out
Digital blue +
19
TMDS Data0/5 Shield
-
shield
20
TMDS Data5-
Out
Not in use
21
TMDS Data5+
Out
Not in use
22
TMDS Clock Shield
-
shield
23
TMDS Clock+
Out
Digital clock -
24
TMDS Clock-
Out
Digital clock +
C1
Analog red
Out
Not in use
C2
Analog green
Out
Not in use
C3
Analog blue
Out
Not in use
C4
Analog horizontal sync
Out
Not in use
C5
Analog ground
-
Not in use
*The signal direction is referred to HSMC card.
23
4.7 SD/SDIO/MMC reader
Memory Card Reader interface block diagram is shown on the next figure:
Figure 4-7 SD Card Reader Block Diagram
This interface should include bi-directional voltage translators in order to be compatible with
SD/SDIO cards standard voltage levels. The Storage Cards will be plugged into on-board connector,
which will support hot-plugging of the card.
The following table describes the SD Card pin-out:
Table 4-11 SD Card Reader Socket Pin-out
Pin
Name
Direction
Description
1
CD/DAT3
Bidir
Card Detect/Data line
2
CMD
Bidir
Command/Response
3
Vss1
Power
Ground
4
Vdd
Power
Supply Voltage
5
CLK
Input
Clock
6
Vss2
Power
Ground
7
DAT0
Bidir
Data line 0
8
DAT1
Bidir
Data line 1
9
DAT2
Bidir
Data line 2
In addition to card interface, the card socket contains two physical switches that used to detect card
insertion/de-insertion and status on the write protect switch on the card. The status of these switches
is routed to HSMC interface as well. SD Card bus time diagram is shown below:
24
Figure 4-8 SD Card Signal Timing
4.8 EEPROM
The Microchip Technology Inc. 24AA08/24LC08B (24XX08*) is an 8 Kbit Electrically Erasable
PROM. The device is organized as four blocks of 256 x 8-bit memory with a 2-wire serial interface.
Low-voltage design permits operation down to 1.7V, with standby and active currents of only 1 μA
and 1 mA, respectively. The 24XX08 also has a page write capability for up to 16 bytes of data. The
24XX08 is available in the standard 8-pin PDIP, surface mount SOIC, TSSOP, 2x3 DFN, 2x3
TDFN and MSOP packages, and is also available in the 5-lead SOT-23 package.
4.9 Power
There are two power rails that are supplied through HSMC connector +12V and +3.3V.
All the required on-board voltages are generated from these voltage rails. However due to possible
excessive power requirements to support two hard drives, there is an option to supply the power
from external power supply through power plug. On board DC/DC regulator will generate +12V
and supply it to all the downstream power rails. This option is selected by on-board jumper.
25
Figure 4-9 Power Tree
26
Chapter 5
Appendix
5.1
Version
V1.0
V1.1
5.2
Revision Histor y
Change Log
Initial Version (Preliminary)
Modify Table 4-9
Copyright Statement
Copyright © 2011 Terasic Technologies. All rights reserved.
27
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