Maxtang MITX-BYT70 User manual

BYT70 User Manual
1
MITX-BYT70 Motherboard
User Manual V2.1
Edition Statement:
Version
Version Description
Release date
V2.0
Initial version
2017/03/27
V2.1
Delete description of Wake On Lan.
2018/03/01

BYT70 User Manual
2
Chapter 1 Product Introduction
1.1 Parameters
Platform: Onboard Intel Bay Trail-D Celeron J1800(2.41GHz, dual-core, TDP10W)
Onboard Intel Bay Trail-D Celeron J1900(2.0GHz, quad-core , TDP10W)
System memory: Single channel DDR3L-1333MHz slot up to 8GB
GPU: Integrated Intel HD Graphics.
Storage: 1 x SATA2.0, 1 x mSATA.
USB: 8 x high-speed USB interfaces(one port supports USB3.0).
Display: 1 x VGA, 1 x eDP, supports dual display.
Ethernet: 1 x RTL8111F LAN.
Expansion: 1 x Mini-PCIe(supports WIFI, supports 3G/4G network with SIM card slot)
Audio: ALC662, supports Speaker-out, MIC-in, SPDIF and dual channel audio power amplifier.
I/O: IT Super I/O chip, 6 x COM, 1 x LPT.
Other I/O interfaces: 8 x GPIO, PS/2(KB /MS).
Dimension: 170mm x 170mm.
Power: ATX power.
Temperature: -40℃～60℃.

BYT70 User Manual
3
Chapter 2 Hardware
2.1 Graphic description
Please read this manual carefully before you connect an external connector, so as to avoid damage
to the board.
eDP
Mini-PCIE
SIM CARD
Speaker
F-AUDIO
JPOWER
JCOM36
mSATA
USB2.0
DIMM
CLR_MOS
SATA
ATX Power
JGPIO
JAT
USB2.0
JCOM2

BYT70 User Manual
4
2.1.1 Jumper Function Setting
Set jumpers according to your needs before installing hardware.
Tips about how to identify the first header of jumpers and interfaces: 1. Observe the mark beside plugs,
the first header is usually marked by “1” or bold line or triangular symbol; 2. The first header is the
square pad of pads on the back; 3. There is a white arrow beside the first header of all jumpers.
2.1.2 System Memory
There is a DDR3L-1333MHZ SO-DIMM slot on the board up to memory of 8GB and voltage is 1.35V.
2.1.3 Internal Display Interfaces (eDP, JVGA)
1 x 14-pin HDMI, 1 x 12-pin VGA(optional).
JHDMI:
Signal
Pin
Signal
EDP_TX0_DP
1
2
EDP_TX1_DP
EDP_TX0_DN
3
4
EDP_TX1_DN
GND
5
6
GND
EDP_AUXP
7
8
EDP_DETECT
EDP_AUXN
9
10
EDP_BKLON_R
GND
11
12
EDP_BKLADJ_
EDP-PANEL2
13
14
EDP_PANEL1
GND
15
16
GND
+12V
17
18
+12V
JVGA:
Pin
Signal
1
CRT_DDC_ DATA
2
CRT_DDC_ CLK
3
GND
4
VGA_B_R
5
GND
6
VGA_G_R

BYT70 User Manual
5
7
GND
8
VGA_R_R
9
GND
10
CRT_HSYNC1
11
CRT_VSYNC1
12
VGA_DVI_5V
2.1.4 Internal USB (USB1, USB2)
Internal USB pin is USB2.0 Port
USB1, USB2:
Signal
Pin
Signal
5V
1
2
5V
USB DATA-
3
4
USB DATA-
USB DATA+
5
6
USB DATA+
GND
7
8
GND
9
10
NUL
2.1.5 LAN
With gigabit Ethernet chip RTL8111F, the board can support 1 x RJ45. it supports Wake On LAN.
RJ45 LAN LED Description:
LILED(green)
Function
ACTLED (yellow)
Function
On
Connected
Flicker
Data transmission
2.1.6 Audio (FP_AUDIO, JAUD, JSPIF)
ALC662 audio control chip. The green one is Speaker-out and the pink one is Mic-in, FP_AUDIO is for
Speaker-out and MIC-in at front panel, JAUD is for amplifier output, JSPIF is for SPDIF-out.
FP_AUDIO:

BYT70 User Manual
6
Signal
Pin
Signal
MIC2-L
1
2
AGND
MIC2-R
3
4
AVCC
FRO-R
5
6
MIC2-JD
F-IO-SEN(AGNG)
7
8
NC
FRO-L
9
10
LIN2-JD
JAUD:
Pin
Signal
1
L+
2
L-
3
R-
4
R+
JSPIF:
Pin
Signal
1
+5V
2
SPDIF Out
3
GND
2.1.7 COM (COM1 , JCOM2, JCOM36, JCOM1_P, JCOM2_P)
6 x RS232. COM1 is a standard interface at rear panel(DB-9). JCOM1_P and JCOM_2 provide voltage
(5V/12V optional) for COM1 and JCOM2.
JCOM2:
Signal
Pin
Signal
DCD#
1
2
RXD
TXD
3
4
DTR#
GND
5
6
DSR#

BYT70 User Manual
7
RTS#
7
8
CTS#
RI#
9
10
（blank）
JCOM36:
Signal
Pin
Signal
DCD#
1
2
RXD
TXD
3
4
DTR#
GND
5
6
DSR#
RTS#
7
8
CTS#
RI#
9
10
（NC）
DCD#
11
12
RXD
TXD
13
14
DTR#
GND
15
16
DSR#
RTS#
17
18
CTS#
RI#
19
20
（NC）
DCD#
21
22
RXD
TXD
23
24
DTR#
GND
25
26
DSR#
RTS#
27
28
CTS#
RI#
29
30
（NC）
DCD#
31
32
RXD
TXD
33
34
DTR#
GND
35
36
DSR#
RTS#
37
38
CTS#
RI#
39
40
（NC）
JCOM1_P/JCOM2_P:

BYT70 User Manual
8
Interface
Setting
Function
1-2
Close
5V
3-4
Close
RI
5-6
Close
12V
Do not connect three sets of COM at the same time or the board will be damaged.
2.1.8 LPT
1 x LPT. Customers can connect it to equipment like printer.
2.1.9 JGPIO
One 2×5-Pin JGPI0, 8 programmable I/O interfaces
Signal
Pin
Signal
GPI_S5_0
1
2
1.8V
GPI_S5_1
3
4
GPO_S5_6
GPI_S5_2
5
6
GPO_S5_7
GPI_S5_3
7
8
GPO_S5_8
GND
9
10
GPO_S5_9
2.1.10 SATA and mSATA (SATA1, mSATA)
1 x SATA2.0 and 1 x mSATA.
2.1.11 Mini-PCIE (MINI-PCIE, SIM1)
1 x Mini-PCIe, supports Wifi. If 3G/4G card is loaded, it will support 3G/4G network.
2.1.12 PS/2 _H
Onboard standard PS/2 interface, PS/2_H is allowed to connect PS/2 equipment, but customers can not
connect equipment with standard interface and PS/2_H at the same time.
PS/2_H：

BYT70 User Manual
9
Pin
Signal
1
+5V
2
KB_DATA
3
KB_CLK
4
MS_ DATA
5
MS_CLK
6
GND
2.1.13 Front Panel Control Interface (JPOWER1)
Front panel control interface is to connect function buttons and indication lights on the front panel.
JPOWER1:
Signal
Pin
Signal
HDD_LED+
1
2
PWR_LED+
HDD_LED-
3
4
PWR_LED-
RSTBTN+
5
6
PWR_ON+
RSTBTN-
7
8
PWR_ON-
NUL
9
10
2.1.14 Auto Power On (JAT)
Short-circuit the 1st and 2nd pin of the jumper, then it will work.
JAT:
Pin
Setting
Function
1-2
Close
AUTO START
2-3
Close
NC
Attention: The function of the jumper is similar to that of Restore AC Power Loss in BIOS. When the

BYT70 User Manual
10
latter is set to be “power on”, the function will automatically work.
2.1.15 JCMOS
CMOS is powered by the button battery on the board. Clearing CMOS will permanently clear previous
system setting and restore it to factory setting.
Steps: 1. Power the computer off;
2. Connect CLR_MOS first and second pin via the jumper cap for 3-5 secs, and disconnect;
3. Turn the computer on, and press <Del> to enter BIOS setting, overload the best default value;
4. Save and exit.
JMOS:
Pin
Setting
Function
1-2
Close
CLR CMOS
2-3
Close
NC
Do not clear CMOS when the computer is connected to power.