ASRock IMB-1238 HDMI High-Definition Multimedia Interface Instruction Manual
- June 13, 2024
- ASRock
Table of Contents
IMB-1238 HDMI High-Definition Multimedia Interface
Jumpers and Headers Setting Guide
IMB-1238
IMB-X1238
The terms HDMI® and HDMI High-Definition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the
United States and other countries.
Revision History Date
August 24, 2023
Description First Release
1 2 34 5
6
7
8 9 10
11 12 13
44
43 42 41 40 39
COM2 COM1
LVDS1
1
1
PWR_COM1 PWR_COM2
1 ESPI1
1
1
M2_M2
1
SATA3_4
M2_B1
1 1
SATA3_5
1 SATA3_6
COM4
COM3 JGPIO1
BLT_PWR1
ATXPWR1
1 SATA3_7
DDR5_B1
1
1
1
SATA_PWR1 PWR_COM3
1 1
PNL_PWR1
1
1
1
BLT_VOL1
1 JGPIO_PWR1
1
DDR5_A1
HDMI1 DP1
JGPIO_SET1 BLT_PWM2 BKT_PWR1
HDMI2
USB 2.0
1
T: USB2_5
B: USB2_6
SIM1
1
USB3_4_9
1
BIOS ROM
Industrial
1
1 1
1
14 15
16 17 18 19
20
DACC1_PCIE_PWR1
USB2_10_11
38
USB 3.2 Gen2 Top:
37
T: USB3_2 B: USB3_1
LAN2
1
BAT1
USB 3.2 Gen2 Top:
36
T: USB3_8 B: USB3_7
LAN1
35 34
MIC IN
LINE OUT
SPDIF1 1
SPEAKER1 1
HD_AUDIO1
1 1
DC_4PIN1
M2_E1
1
M2_M1
1
CHA_FAN1
CPU_FAN1
1
1
PCIE1
CLRMOS1
CI1_2
21
1
22
1
23
1
24
1
BLT_PWM1 PWR_BAT1_SIO_AT1
PANEL1 PLED PWRBTN
1
HDLED RESET
1 SMBUS_TEST1
25 26
33
32 31
30 29
28 27
COM Port PWR Setting Jumpers
1 : PWR_COM1 (For COM Port1)
2 : PWR_COM2 (For COM Port2) 1 2 3
9 : PWR_COM3 (For COM Port3) 3
1-2 : +5V (Default)
2
2-3 : +12V
1
6 : SATA3 Connectors (SATA3_4~7)
Pin
Signal Name
1
GND
2
SATA-A+
3
SATA-A-
4
GND
5
SATA-B-
6
SATA-B+
7
GND
1
7
SATA3_4
1
7
7
1
SATA3_5
SATA3_6 SATA3_7
3 : M.2 Key-M Socket (M2_M2)
Pin Signal Name
1
GND
3
GND
5
PERn3
7
PERp3
9
GND
11
PETn3
13
PETp3
15
GND
17
PERn2
19
PERp2
21
GND
23
PETn2
25
PETp2
27
GND
29
PERn1
31
PERp1
33
GND
35
PETn1
37
PETp1
39
GND
41
PERn0
43
PERp0
45
GND
47
PETn0
49
PETp0
51
GND
53
PEFCLKn
55
PEFCLKp
57
GND
67
NA
69
PEDET
71
GND
73
GND
75
GND
Signal Name Pin
+3.3V
2
+3.3V
4
NA
6
NA
8
LED
10
+3.3V
12
+3.3V
14
+3.3V
16
+3.3V
18
NA
20
NA
22
NA
24
NA
26
NA
28
NA
30
NA
32
NA
34
NA
36
DEVSLP
38
SMB_CLK
40
SMB_DATA
42
NA
44
NA
46
NA
48
PERST#
50
CLKREQ#
52
NA
54
NA
56
NA
58
NA
68
+3.3V
70
+3.3V
72
+3.3V
74
5 : ESPI Header (ESPI1)
Pin
Signal Name
1
GND
2
C_ESPI_CLK
3
GND
4
C_ESPI_CS#
5
DEBUG_RESET
6
GND
7
+3V
8
GND
9
SMB_CLK_MAIN
10
SMB_DATA_MAIN
11
C_ESPI_IO0
12
C_ESPI_IO1
13
C_ESPI_IO2
14
C_ESPI_IO3
15
GND
16
+3VSB
17
N/A
18
N/A
19
C_ESPI_ALERT#
20
GND
4 : M.2 Key-B Socket (M2_B1)
Pin Signal Name
Signal Name Pin
1
NA
+3.3V
2
3
GND
+3.3V
4
5
GND
FuLL_CardPower off
6
7
USB_D+
W_DISABLE
8
9
USB_D-
WWAN_LED# 10
11
GND
21
GND
23
NA
25
NA
27
GND
29
USB3_RX-
31 USB3_RX+
33
GND
35
USB3_TX-
37
USB3_TX+
39
GND
41
PERn0
43
PERP0
45
GND
47
PETn0
49
PETP0
51
GND
53
PEFCLKn
55
PEFCLKp
57
GND
59
NA
61
NA
63
NA
65
NA
67
NA
69
NA
71
GND
73
GND
75
NA
NA
20
NA
22
NA
24
NA
26
NA
28
UIM_RESET 30
UIM_CLK
32
UIM_DATA
34
UIM_PWR
36
NA
38
NA
40
NA
42
NA
44
NA
46
NA
48
PERST#
50
CLKREQ#
52
NA
54
NA
56
NA
58
NA
60
NA
62
NA
64
NA
66
NA
68
+3.3V
70
+3.3V
72
+3.3V
74
7 : 24-pin ATX Power Input Connector (ATXPWR1)
8 : SATA Power Output Connector (SATA_PWR1)
Pin
Signal Name
1
+5V
4
2
GND
3
GND
1
4
+12V
10 : COM Port Headers (COM 3, 4) (RS232)
COM3 : Pin Signal Name
Signal Name Pin
1
DCD
RXD
29
10
3
TXD
DTR
4
5
GND
7
RTS
DSR
6
CTS
81
2
9
PWR
10
COM4 : Pin Signal Name
1
DCD
3
TXD
5
GND
7
RTS
9
N/A
Signal Name Pin
RXD
2
DTR
4
DSR
6
CTS
8
10
11 : Digital Input/Output Pin Header (JGPIO1)
Pin Signal Name
1
SIO_GP71
3
SIO_GP72
5
SIO_GP73
7
SIO_GP74
9 JGPIOPWR_R
Signal Name Pin
GPP_H23
2
GPP_I10
4
GPP_E5
6
GPP_E6
8
GND
10
10
9
2
1
Pin Signal Name
1
+3V
2
+3V
3
GND
4
+5V
5
GND
6
+5V
7
GND
8
PWROK_PS
9
ATX+5VSB
10
+12V
11
+12V
12
+3V
1 13
Signal Name Pin
+3V
13
-12V
14
GND
15
PSON#
16
GND
17
GND
18
GND
19
NA
20
+5V
21
+5V
22
+5V
23
GND
24
12 24
12 : Backlight Volume Control (BLT_VOL1)
Pin
Signal Name
1
GPIO_VOL_UP
7
2
GPIO_VOL_DW
3
PWRDN
4
BLT_UP
5
BLT_DW
6
GND
1
7
GND
13 : Inverter Power Control Wafer (BLT_PWR1)
Pin
Signal Name
1
GND
6
2
GND
3
CON_LBKLT_CTL
4
CON_LBKLT_EN
5
LCD_BLT_VCC
1
6
LCD_BLT_VCC
1
20
14 : Digital Input / Output Power Select
(JGPIO_PWR1)
1-2 : +12V 2-3 : +5V (Default)
12 3
15 : LVDS Panel Connector (LVDS1)
Pin Signal Name
Signal Name Pin 39
40
1
LCD_VCC
LCD_VCC
2
3
+3.3V
NA
4
5
NA
LVDS_A_DATA0# 6
7 LVDS_A_DATA0
GND
8
9 LVDS_A_DATA1# LVDS_A_DATA1 10
11
GND
LVDS_A_DATA2# 12
13 LVDS_A_DATA2
GND
14
15 LVDS_A_DATA3# LVDS_A_DATA3 16
17
GND
LVDS_A_CLK# 18
19 LVDS_A_CLK
GND
20
1
2
21 LVDS_B_DATA0# LVDS_B_DATA0 22
23
GND
LVDS_B_DATA1# 24
25 LVDS_B_DATA1
GND
26
27 LVDS_B_DATA2# LVDS_B_DATA2 28
29 DPLVDD_EN LVDS_B_DATA3# 30
31 LVDS_B_DATA3
GND
32
33 LVDS_B_CLK#
LVDS_B_CLK 34
35
GND
CON_LBKLT_EN 36
37 CON_LBKLT_CTL LCD_BLT_VCC 38
39 LCD_BLT_VCC LCD_BLT_VCC 40
- eDP by pass mode pin definition (switch by BIOS)
Pin Signal Name
1
LCD_VCC
3
N/A
5
N/A
7
N/A
9
EDP_TX1#
11
GND
13
EDP_TX0
15
N/A
17
GND
19 EDP_AUXP
21
N/A
23
GND
25
N/A
27
N/A
29 DPLVDD_EN
31
N/A
33
N/A
35
GND
37 CON_LBKLT_CTL
39 LCD_BLT_VCC
Signal Name Pin
LCD_VCC
2
N/A
4
N/A
6
GND
8
EDP_TX1
10
EDP_TX0#
12
GND
14
N/A
16
EDP_AUXN 18
GND
20
N/A
22
N/A
24
GND
26
N/A
28
N/A
30
GND
32
N/A
34
CON_LBKLT_EN 36
LCD_BLT_VCC 38
LCD_BLT_VCC 40
16 : Panel Power Select
(LCD_VCC) (PNL_PWR1)
1-2: LCD_VCC : +3V (Default)
2-3: LCD_VCC : +5V
4-5: LCD_VCC : +12V 5
1
17 : Backlight Power Select (LCD_BLT_VCC) (BKT_PWR1) 1-2: LCD_BLT_VCC : +5V
(Default) 2-3: LCD_BLT_VCC : +12V 3
2
1
1 2 34 5
6
7
8 9 10
11 12 13
Installation of ROM Socket
44
43 42 41 40 39
COM2 COM1
LVDS1
1
1
PWR_COM1 PWR_COM2
1 ESPI1
1
1
M2_M2
1
SATA3_4
M2_B1
1 1
SATA3_5
1 SATA3_6
COM4
COM3 JGPIO1
BLT_PWR1
ATXPWR1
1 SATA3_7
DDR5_B1
1
1
1
SATA_PWR1 PWR_COM3
1 1
PNL_PWR1
1
1
1
BLT_VOL1
1 JGPIO_PWR1
1
DDR5_A1
HDMI1 DP1
JGPIO_SET1 BLT_PWM2 BKT_PWR1
HDMI2
USB 2.0
1
T: USB2_5
B: USB2_6
SIM1
1
USB3_4_9
1
BIOS ROM
Industrial
1
1 1
1
14 15
16 17 18 19
20
DACC1_PCIE_PWR1
USB2_10_11
38
USB 3.2 Gen2 Top:
37
T: USB3_2 B: USB3_1
LAN2
1
BAT1
USB 3.2 Gen2 Top:
36
T: USB3_8 B: USB3_7
LAN1
35 34
MIC IN
LINE OUT
SPDIF1 1
SPEAKER1 1
HD_AUDIO1
1 1
DC_4PIN1
M2_E1
1
M2_M1
1
CHA_FAN1
CPU_FAN1
1
1
PCIE1
CLRMOS1
CI1_2
21
1
22
1
23
1
24
1
BLT_PWM1 PWR_BAT1_SIO_AT1
PANEL1 PLED PWRBTN
1
HDLED RESET
1 SMBUS_TEST1
25 26
33
32 31
30 29
28 27
· Do not apply force to the actuator cover after ic inserted. · Do not apply
force to actuator cover when it is opening over 120 degree, Otherwise, the
actuator cover may be broken.
· The yellow dot (Pin1) on the ROM must be installed at pin1 position of the
socket (white arrow area). · Make sure the white dot on the ROM is installed
outwards of the socket. · For further details of how to install ROM, please
refer to ASRI website. Warning: If the installation does not follow as the
picture, then it may cause severe damage to chipset & MB.
18 : CON_LBKLT_CTL Voltage Level
(BLT_PWM2)
3
1-2 : 3V Level (Default)
2
2-3 : 5V Level
1
19 : Digital Input / Output Default Value
Setting (JGPIO_SET1)
3
1-2 : Pull-High (Default)
2
2-3 : Pull-Low
1
20 : DACC1_PCIE_PWR1
4
PIN1-2 Open : No ACC (Default)
PIN1-2 Short : ACC
PIN3 : PSON#
1
PIN4 : GND
· Auto clear CMOS when system boot improperly.
21 : Clear CMOS Header (CLRMOS1) 3
1-2 : Normal (Default)
2 1
2-3 : Clear CMOS
4
22 : Chassis Intrusion Header (CI1_2)
PIN 1-2 Open : Normal
PIN 1-2 Short : Active Case Open
1
PIN 3-4 Open : Active Case Open (Default)
PIN 3-4 Short : Normal
23 : PWR_BAT1_SIO_AT1
4
PIN 1-2 Open : Normal
PIN 1-2 Short : Charge Battery
PIN 3-4 Open : ATX Mode
1
PIN 3-4 Short : AT Mode
· Only supported by chargeable battery.
24 : Brightness Control Mode (BLT_PWM1)
1-2 : From eDP PWM to CON_LBKLT_CTL
2-3 : From LVDS PWM to CON_LBKLT_CTL
(Default)
3
· Please set to 1-2 when adjusting brightness
2
by Brightness Control bar under OS.
1
· Please set to 2-3 when adjusting brightness by BLT_VOL1.
25 : System Panel Header (PANEL1)
Pin Signal Name
Signal Name Pin
2
10
1
HDLED+
PLED+
2
3
HDLED-
PLED-
4
5
GND
PWRBTN#
6
1
9
7
RESET#
GND
8
9
GND
10
26 : SMBUS_TEST1
Pin
Signal Name
1
GPP_E7
2
SMB_CLK_MAIIN
3
SMB_DATA_MAIN
4
GND
4
1
27 : CPU FAN Connector (+12V) (CPU_FAN1)
Pin
Signal Name
1
GND
2
+12V
3
CPU_FAN_SPEED
4
FAN_SPEED_CONTROL
4
1
35 : 3W Audio AMP Output Wafer (SPEAKER1)
Pin
Signal Name
1
OUTLN
2
OUTLP
3
OUTRP
4
OUTRN
1
4
28 : Chassis FAN Connector (+12V) (CHA_FAN1)
Pin
Signal Name
1
GND
2
+12V
3
CHA_FAN_SPEED
4
FAN_SPEED_CONTROL
4
1
29 : M.2 Key-M Socket 30 : M.2 Key-E Socket
(M2_M1)
(M2_E1)
36 : Top : RJ45 2.5G LAN Port (LAN1) Middle : USB 3.2 Gen2 Port (USB3_8)
Bottom : USB 3.2 Gen2 Port (USB3_7)
37 : Top: RJ45 1G LAN Port (LAN2) Middle : USB 3.2 Gen2 Port (USB3_2) Bottom :
USB 3.2 Gen2 Port (USB3_1)
38 : USB 2.0 Header (USB2_10_11)
Pin Signal Name
1
GND
3
GND
5
PERn3
7
PERp3
9
GND
11
PETn3
13
PETp3
15
GND
17
PERn2
19
PERp2
21
GND
23
PETn2
25
PETp2
27
GND
29
PERn1
31
PERp1
33
GND
35
PETn1
37
PETp1
39
GND
41
PERn0
43
PERp0
45
GND
47
PETn0
49
PETp0
51
GND
53
PEFCLKn
55
PEFCLKp
57
GND
67
NA
69
PEDET
71
GND
73
GND
75
GND
Signal Name Pin
+3.3V
2
+3.3V
4
NA
6
NA
8
SATA _ LED
10
+3.3V
12
+3.3V
14
+3.3V
16
+3.3V
18
NA
20
NA
22
NA
24
NA
26
NA
28
NA
30
NA
32
NA
34
NA
36
NA
38
SMB_CLK
40
SMB_DATA
42
NA
44
NA
46
NA
48
PERST#
50
CLKREQ#
52
NA
54
NA
56
NA
58
NA
68
+3.3V
70
+3.3V
72
+3.3V
74
Pin Signal Name
Signal Name Pin
1
GND
+3.3V
2
3
USB_D+
+3.3V
4
5
USB_D-
NA
6
7
GND
NA
8
9 CNV_WGR_D1- CNV_RF_RESET 10
11 CNV_WGR_D1+
NA
12
13
GND
MODEM_CLKREQ 14
15 CNV_WGR_D0-
NA
16
17 CNV_WGR_D0+
GND
18
19
GND
NA
20
21 CNV_WGR_CLK- CNV_BRI_RSP 22
23 CNV_WGR_CLK+
33
GND
35
PETp
37
PETn
39
GND
41
PERp
43
PERn
45
GND
47
PEFCLKp
49
PEFCLKn
51
GND
53
CLKREQ#
55
NA
57
GND
59 CNV_WT_D1-
61 CNV_WT_D1+
63
GND
65 CNV_WT_D0-
67 CNV_WT_D0+
69
GND
71 CNV_WT_CLK-
73 CNV_WT_CLK+
75
GND
CNV_BGI_DT 32
CNV_RGI_RSP 34
CNV_BRI_DT 36
NA
38
NA
40
NA
42
NA
44
NA
46
NA
48
SUSCLK
50
PERST0#
52
W_DISABLE1# 54
W_DISABLE2# 56
SMB_DATA
58
SMB_CLK
60
NA
62
NA
64
NA
66
NA
68
NA
70
+3.3V
72
+3.3V
74
31 : Front Panel Audio Header (HD_AUDIO1)
Pin Signal Name
Signal Name Pin
10
9
1
MIC2_L
GND
2
3
MIC2_R
4
5
OUT2_R
MIC_RET
6
7
J_SENSE
8
2
1
9
OUT2_L
OUT_RET
10
32 : 4-pin ATX PWR Connector (DC_4PIN1)
Pin
Signal Name
1
GND
2
GND
3
DC Input
4
DC Input
1
2
3
4
33 : SPDIF Header (SPDIF1)
Pin
Signal Name
1
+5V
2
3
SPDIF OUT
4
GND
1
4
34 : Audio Output Green – Line Out
Pink – Mic In
Pin Signal Name
Signal Name
Pin
1
2
1
USB_PWR
USB_PWR
2
3
P-
P-
4
5
P+
P+
6
7
GND
GND
8
9
DUMMY
10 9
10
39 : Top : USB 2.0 Port (USB3_5) Bottom : USB 2.0 Port (USB3_6)
40 : HDMI Port (HDMI2) (supports HDMI1.4) 41 : USB 3.2 Gen1 Header (USB3_4_9)
Pin Signal Name
Signal Name Pin
1
DUMMY
IntA_PA_D+
2
1
2
3
IntA_PB_D+
IntA_PA_D-
4
5
IntA_PB_D-
GND
6
7
GND
IntA_PA_SSTX+ 8
9
DUMMY
IntA_PA_SSTX- 10
11
DUMMY
GND
12
13
GND
IntA_PA_SSRX+ 14
15
DUMMY
IntA_PA_SSRX- 16
19
20
17
DUMMY
Vbus
18
19
Vbus
20
42 : Top: DisplayPort (DP1) Bottom: HDMI Port (HDMI1)
43 : Battery Connector (BAT1)
Pin
Signal Name
1
+BAT
2
GND
1
2
44 : COM Port Headers (COM1, 2) (RS232/422/485)*
- This motherboard supports RS232/422/485 on COM1, 2 ports. Please refer to the table below for the pin definition. In addition, COM1, 2 ports (RS232/422/485) can be adjusted in BIOS setup utility > Advanced Screen > Super IO Configuration. You may refer to our user manual for details.
COM1, 2 Port Pin Definition
Pin RS232
1
DCD
2
RXD
3
TXD
4
DTR
5
GND
6
DSR
7
RTS
8
CTS
9
PWR
RS422 TXTX+ RX+ RXGND N/A N/A N/A PWR
RS485 RTXRTX+ N/A N/A GND N/A N/A N/A PWR
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