VmodMIB Digilent Vmod Module Interface Board
VmodMIB Reference Manual
Revision: January 5, 2011
Overview
The Digilent Vmod Module Interface Board (VmodMIB) is a simple
solution for interfacing additional peripheral modules and HDMI
devices to VHDCI-equipped Digilent system boards.
Features
- Connectors
Functional Description
The VmodMIB is an expansion board that connects to the VHDCI
connector on Digilent system boards and provides additional Pmod
and HDMI connections.
Power Connections
The VmodMIB provides two power busses and a ground bus. The two
power busses are labeled VCC and VU. These two busses are made
available at each connector position on the board. There is also a
ground plane that connects the ground pins from all connectors.
The usual Digilent convention is to power the VCC bus at 3.3V
and the VCCFX2 bus at 5.0V. However, depending on the system board
connected and the power supply used, other voltages may be present.
Use caution when using any voltage other than 3.3V on the VCC bus.
Most Digilent system boards will be damaged if the voltage on the
VCC bus is greater than 3.3V.
Pmod Connectors
Digilent Pmods provide various peripheral functions. These can
be as simple as buttons or switches for inputs and LEDs for
outputs, or as complex as graphical LCD display panels,
accelerometers, and keypads.
All Digilent Pmods use either a 6-wire interface or a 12-wire
interface. The 6-wire interface provides four I/O signals, power,
and ground. The twelve-wire interface provides 8 I/O signals, two
powers, and two grounds. The signal definitions for the I/O signals
as well as the voltage requirements for the power supply depend on
the specific module.
The VmodMIB provides five 12-pin Pmod connectors.
HDMI Connectors
The VmodMIB also provides four HDMI type-D connectors to allow
audio/video connections to the system board. They use 19 pins and
the relationship between these pins and the signal names from the
VHDCI connector are described in table 3. Each HDMI connector has a
jumper which can be used to select a 5V source when shorted.
Also, data can be sent to the HDMI connectors via an I2C bus
from signals JE1/SDA and JE2/SCL when the jumpers at J2 are
shorted.
Keep in mind that all HDMI ports share signals with Pmod ports.
JA shares signals with JAA, JB with JBB, JC with JCC, JD with JDD.
All HDMI ports share pins with Pmod port JE, which contains the I2C
bus signals.
VHDCI Signals and Connector Pinout
| J1 | Signal | Connector Pinout |
|---|---|---|
| 1 | JC-CLK_P | 35 |
| 2 | GND | 36 |
| 3 | JC-D0_P | 37 |
| 4 | JC-D1_P | 38 |
| 5 | GND | 39 |
| 6 | JC-D2_P | 40 |
| 7 | JA-D0_P | 41 |
| 8 | GND | 42 |
| 9 | JA-D1_P | 43 |
| 10 | JA-D2_P | 44 |
| 11 | GND | 45 |
| 12 | JB-D0_P | 46 |
| 13 | JB-D1_P | 47 |
| 14 | GND | 48 |
| 15 | JA-CLK_P | 49 |
| 16 | VCCB |
Contact Information:
1300 NE Henley Court, Suite 3 Pullman, WA 99163
(509) 334 6306 Voice | (509) 334 6300 Fax
Doc: 502-190
This document is copyrighted by Digilent, Inc. All rights
reserved. Other product and company names mentioned may be
trademarks of their respective owners.
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Sources:
VmodMIBTM Reference Manual
Revision: January 5, 2011
Overview
The Digilent Vmod Module Interface Board (VmodMIB) is a simple solution for interfacing additional peripheral modules and HDMI devices to VHDCI-equipped Digilent system boards.
Features include:
· VHDCI peripheral board connector · Four HDMI and five 12-pin PmodTM
connectors
Functional Description
The VmodMIB is an expansion board that connects to the VHDCI connector on Digilent system boards and provides additional Pmod and HDMI connections.
Power Connections
The VmodMIB provides two power busses and a ground bus. The two power busses are labeled VCC and VU. These two busses are made available at each connector position on the board. There is also a ground plane that connects the ground pins from all connectors.
The usual Digilent convention is to power the VCC bus at 3.3V and the VCCFX2 bus at 5.0V. However, depending on the system board connected and the power supply used, other voltages may be present. Use caution when using any voltage other than 3.3V on the VCC bus. Most Digilent system boards will be damaged if the voltage on the VCC bus is greater than 3.3V.
1300 NE Henley Court, Suite 3 Pullman, WA 99163
(509) 334 6306 Voice | (509) 334 6300 Fax
68 Pin, VHDCI Connector VHDCI connector J1 is provided on one side of the board for connection to Digilent system boards, like the GenesysTM and AtlysTM, which contain a VHDCI-style connector. The Digilent VHDCI connector signal convention provides for 40 general-purpose I/O signals. The 40 general-purpose I/O signals from the VHDCI connector are brought out to the Pmod and HDMI connectors. See Table 1 for a description of the relationship between the VHDCI connector pins and the signal names, Table 2 for the relationship between signal names and Pmod pins and Table 3 for the relationship between signal names and HDMI pins.
Doc: 502-190
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VmodMIB Reference Manual
Pmod Connectors
Digilent Pmods provide various peripheral functions. These can be as simple as buttons or switches for inputs and LEDs for outputs, or as complex as graphical LCD display panels, accelerometers, and keypads.
All Digilent Pmods use either a 6-wire interface or a 12-wire interface. The 6-wire interface provides four I/O signals, power, and ground. The twelve-wire interface provides 8 I/O signals, two powers, and two grounds. The signal definitions for the I/O signals as well as the voltage requirements for the power supply depend on the specific module.
The VmodMIB provides five 12-pin Pmod connectors.
HDMI Connectors
The VmodMIB also provides four HDMI type-D connectors to allow audio/video connections to the system board. They use 19 pins and the relationship between these pins and the signal names from the VHDCI connector are described in table 3. Each HDMI connector has a jumper which can be used to select a 5V source when shorted.
Also, data can be sent to the HDMI connectors via an I2C bus from signals JE1/SDA and JE2/SCL when the jumpers at J2 are shorted.
Keep in mind that all HDMI ports share signals with Pmod ports. JA is shares signals with JAA, JB with JBB, JC with JCC, JD with JDD. All HDMI ports share pins with Pmod port JE, which contains the I2C bus signals.
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VmodMIB Reference Manual
Table 1: VHDCI Signals and Connector Pinout
J1
1 JC-CLK_P
35
2 GND
36
3 JC-D0_P
37
4 JC-D1_P
38
5 GND
39
6 JC-D2_P
40
7 JA-D0_P
41
8 GND
42
9 JA-D1_P
43
10 JA-D2_P
44
11 GND
45
12 JB-D0_P
46
13 JB-D1_P
47
14 GND
48
15 JA-CLK_P
49
16 VCCB
50
17 VCC5V0
51
18 VCC5V0
52
19 VCCB
53
20 JB-CLK_P
54
21 GND
55
22 JB-D2_P
56
23 JE8
57
24 GND
58
25 JE2/SCL
59
26 JE10
60
27 GND
61
28 JE4
62
29 JD-CLK_P
63
30 GND
64
31 JD-D0_P
65
32 JD-D1_P
66
33 GND
67
34 JD-D2_P
68
S1 SHIELD
S2
JC-CLK_N GND JC-D0_N JC-D1_N GND JC-D2_N JA-D0_N GND JA-D1_N JA-D2_N GND JB-D0_N JB-D1_N GND JA-CLK_N VCCB VCC5V0 VCC5V0 VCCB JB-CLK_N GND JB-D2_N JE7 GND JE1/SDA JE9 GND JE3 JD-CLK_N GND JD-D0_N JD-D1_N GND JD-D2_N SHIELD
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VmodMIB Reference Manual
Table 2: Pmod Connector Pin Layouts
JA Top Set of Pins
Pin
Pinout
1
JA-D0_N
2
JA-D0_P
3
JA-D2_N
4
JA-D2_P
5
GND
6
VCCB
JB Top Set of Pins
Pin
Pinout
1
JB-D0_N
2
JB-D0_P
3
JB-D2_N
4
JB-D2_P
5
GND
6
VCCB
JC Top Set of Pins
Pin
Pinout
1
JC-D0_N
2
JC-D0_P
3
JC-D2_N
4
JC-D2_P
5
GND
6
VCCB
JD Top Set of Pins
Pin
Pinout
1
JD-D0_N
2
JD-D0_P
3
JD-D2_N
4
JD-D2_P
5
GND
6
VCCB
JE Top Set of Pins
Pin
Pinout
1
JE1/SDA
2
JE2/SCL
3
JE3
4
JE4
5
GND
6
VCCB
NOTE: All signals are connected via a 50 ohm resistor with the exception of the VCCB and GND signals.
JA Bottom Set of Pins
Pin
Pinout
7
JA-CLK_N
8
JA-CLK_P
9
JA-D1_N
10
JA-D1_P
11
GND
12
VCCB
JB Bottom Set of Pins
Pin
Pinout
7
JB-CLK_N
8
JB-CLK_P
9
JB-D1_N
10
JB-D1_P
11
GND
12
VCCB
JC Bottom Set of Pins
Pin
Pinout
7
JC-CLK_N
8
JC-CLK_P
9
JC-D1_N
10
JC-D1_P
11
GND
12
VCCB
JD Bottom Set of Pins
Pin
Pinout
7
JD-CLK_N
8
JD-CLK_P
9
JD-D1_N
10
JD-D1_P
11
GND
12
VCCB
JE Bottom Set of Pins
Pin
Pinout
1
JE7
2
JE8
3
JE9
4
JE10
5
GND
6
VCCB
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VmodMIB Reference Manual
Table 3: HDMI Connector Pin Layouts
JAA
Pin
Pinout
1
VCC5V0
2
VCCB
3
JA-D2_P
4
GND
5
JA-D2_N
6
JA-D1_P
7
GND
8
JA-D1_N
9
JA-D0_P
10
GND
11
JA-D0_N
12
JA-CLK_P
13
GND
14
JA-CLK_N
15
VCCB
16
GND
17
JE2/SCL
18
JE1/SDA
19
VCC5V0
JBB
Pin
Pinout
1
VCC5V0
2
VCCB
3
JB-D2_P
4
GND
5
JB-D2_N
6
JB-D1_P
7
GND
8
JB-D1_N
9
JB-D0_P
10
GND
11
JB-D0_N
12
JB-CLK_P
13
GND
14
JB-CLK_N
15
VCCB
16
GND
17
JE2/SCL
18
JE1/SDA
19
VCC5V0
NOTE: All signals are connected via a 50 ohm resistor
JCC
Pin
Pinout
1
VCC5V0
2
VCCB
3
JC-D2_P
4
GND
5
JC-D2_N
6
JC-D1_P
7
GND
8
JC-D1_N
9
JC-D0_P
10
GND
11
JC-D0_N
12
JC-CLK_P
13
GND
14
JC-CLK_N
15
VCCB
16
GND
17
JE2/SCL
18
JE1/SDA
19
VCC5V0
JDD
Pin
Pinout
1
VCC5V0
2
VCCB
3
JD-D2_P
4
GND
5
JD-D2_N
6
JD-D1_P
7
GND
8
JD-D1_N
9
JD-D0_P
10
GND
11
JD-D0_N
12
JD-CLK_P
13
GND
14
JD-CLK_N
15
VCCB
16
GND
17
JE2/SCL
18
JE1/SDA
19
VCC5V0
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