HT-XT100
36
• IC Pin Function Description
MAIN BOARD U11 MTK8301OXE (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
AVDD12_2
-
Power supply terminal (+1.2V)
2
AVDD33_1
-
Power supply terminal (+3.3V)
3
XTALI
I
System clock input terminal (27 MHz)
4
XTALO
O
System clock output terminal (27 MHz)
5
V14
I
Reference voltage (+1.4V) input terminal
6
GPO5
I/O
Fixed at “L” in this unit
7
AVDD33_2
-
Power supply terminal (+3.3V)
8, 9
NC
-
Not used
10
GPIO2
I
Fault signal input terminal (for USB)
11
USB_DP
I/O
Two-way USB data (+) bus terminal
12
USB_DM
I/O
Two-way USB data (–) bus terminal
13
VDD33_USB
-
Power supply terminal (+3.3V)
14
PAD_VRT
I
USB generating reference current input terminal
15
VDD12_USB
-
Power supply terminal (+1.2V)
16
DV_Y2
I
SPDIF signal input terminal (for HDMI)
17
DV_Y3
I
SPDIF signal input terminal (for optical)
18
DV_Y4
I
Volume (–) key input terminal
19
SF_CS
O
Chip select signal output terminal (for serial
fl
ash)
20
SF_DO
O
Data output terminal (for serial
fl
ash)
21
SF_DI
I
Data input terminal (for serial
fl
ash)
22
DVDD33
-
Power supply terminal (+3.3V)
23
SF_CK
O
Clock signal output terminal (for serial
fl
ash)
24
UP1_6/SCL
O
I2C clock signal output terminal (for HDMI)
25
UP1_7/SDA
I/O
Two-way I2C data bus terminal (for HDMI)
26
GPIO11
I
Serial data input terminal (for DSP)
27
GPIO6
O
Serial data output terminal (for DSP)
28
PRST_
I
Reset signal input terminal “L”: reset
29
IR_
I
IR control signal input terminal
30
GPIO3/INT_
I/O
Two-way CEC serial data bus terminal (for HDMI)
31
GPIO4
I
Input key input terminal
32
DV_C0
O
Power on/off control signal output terminal (for AMP)
33
DV_C1
I
Bluetooth pairing key input terminal
34
DV_C2
I
Status signal input terminal (for Bluetooth)
35
DV_C3
O
Power control signal output terminal (for Bluetooth)
36
SD_MS_D2
I
Audio enable signal input terminal (for Bluetooth)
37
SD_MS_D3
O
Reset signal output terminal (for Bluetooth)
38
GPIO13
I
Status signal input terminal (for Bluetooth)
39
GPIO9
O
FN1 signal output terminal (for Bluetooth)
40
GPIO8
O
Audio selection signal output terminal
41
GPIO7/CKE_
O
FN2 signal output terminal (for Bluetooth)
42
DVDD33
-
Power supply terminal (+3.3V)
43 to 50
RD0 to RD7
I/O
Two-way data bus terminal (for SDRAM)
51
DQM0
O
Data mask signal output terminal (for SDRAM)
52, 53
RD15, RD14
I/O
Two-way data bus terminal (for SDRAM)
54
DVDD12
-
Power supply terminal (+1.2V)
55 to 60
RD13 to RD8
I/O
Two-way data bus terminal (for SDRAM)
61
DQM1
O
Data mask signal output terminal (for SDRAM)
62
RCLK
O
Clock signal output terminal (for SDRAM)
63 to 66
RA11, RA9 to RA7
O
Address signal output terminal (for SDRAM)
67
DVDD33
-
Power supply terminal (+3.3V)
68 to 70
RA6 to RA4
O
Address signal output terminal (for SDRAM)
71
RWE_
O
Write enable signal output terminal (for SDRAM)
72
CAS_
O
Column address strobe signal output terminal (for SDRAM)
73
RAS_
O
Row address strobe signal output terminal (for SDRAM)
74
DVDD33
-
Power supply terminal (+3.3V)
75, 76
BA0, BA1
O
Bank address signal output terminal (for SDRAM)
