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HCD-GTR33/GTR55/GTR77
46
HUB BOARD IC1501 USB2512A-AEZG (USB CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
USBDN1_DM,
USBDN1_DP
I
Audio serial data input from the USB A connector
3, 4
USBDN2_DM,
USBDN2_DP
I/O
Two-way audio serial data with the USB B connector
5
VDDA33
-
Power supply terminal (+3.3V)
6 to 9
NC
-
Not used
10
VDDA33
-
Power supply terminal (+3.3V)
11
TEST
-
Not used
12
PRTPWR1
O
Not used
13
OCS1_N
I
Over current sense signal input from the USB interface
14
VDD18
-
Power supply terminal (+1.8V)
15
VDD33CR
-
Power supply terminal (+3.3V)
16
PRTPWR2
O
Not used
17
OCS2_N
I
Over current sense signal input terminal
18 to 21
NC
-
Not used
22
SDA/SMBDATA/
NON/REM1
-
Not used
23
VDD33
-
Power supply terminal (+3.3V)
24
SCL/SMBCLK/
CFG_SEL0
-
Not used
25
HS_IND/CFG_SEL1
-
Not used
26
RESET_N
I
Reset signal input from the system controller “L”: reset
27
VBUS_DET
I
VBUS voltage detect signal input from the system controller
28
SUSP_IND/LOCAL_
PWR/NON_PEM0
-
Not used
29
VDDA33
-
Power supply terminal (+3.3V)
30, 31
USBUP_DM,
USBUP_DP
I/O
Two-way audio serial data with the audio processor
32
XTAL2
O
System clock (24 MHz) output terminal
33
XTAL1/CLKIN
I
System clock (24 MHz) input terminal
34
VDD18PLL
-
Power supply terminal (+1.8V)
35
RBIAS
-
Not used
36
VDD33PLL
-
Power supply terminal (+3.3V)