HCD-DJ2i
65
USB BOARD IC901 TMP92CD28AFG-7AC9 (USB CONTROL)
Pin No.
Pin Name
I/O
Description
1
/RESET
I
Reset signal input from the system control IC (L: reset)
2
DI
I
Ready to send signal input from the system control IC
3, 4
NO USE
O
Not used. (Open)
5
G-3
I
Function select signal input (Fixed at H in this set)
6
DVCC
—
Power supply pin (+3.2 V)
7 to 9
NO USE
O
Not used. (Open)
10
DVSS
—
Ground
11
DVCC
—
Connect to RVOUT1 in this set
12
RVOUT1
O
External capacitor connection terminal
13, 14
RVIN
I
Reference voltage (+3.2 V) input
15
RVOUT2
O
External capacitor connection terminal
16
DVCC
—
Connect to RVOUT2 in this set
17
DVSS
—
Ground
18 to 25
D0 to D7
I/O
Two-way data bus input/output with the S-RAM IC
26
DVSS
—
Ground
27
DVCC
—
Power supply pin (+3.2 V)
28 to 35
D8 to D15
I/O
Two-way data bus input/output with the S-RAM IC
36
A0
O
Address signal output (Not used in this set)
37 to 43
A1 to A7
O
Address signal output for the S-RAM IC
44
DVSS
—
Ground
45
DVCC
—
Power supply pin (+3.2 V)
46 to 54
A8 to A16
O
Address signal output for the S-RAM IC
55 to 58
BUS0 to BUS3
O
Serial data output for the CD-MP3 processor IC
59
/BUCK
O
Serial data transfer clock signal output for the CD-MP3 processor IC
60
/CCE
O
Chip enable signal output for the CD-MP3 processor IC
61
NO USE
O
Not used. (Open)
62
DVSS
—
Ground
63
DVCC
—
Power supply pin (+3.2 V)
64
RD
O
Read enable signal output for the S-RAM
65
WR
O
Write enable signal output for the S-RAM
66
SRLLB
O
Lower-byte control signal output for the S-RAM
67
SRLUB
O
Upper-byte control signal output for the S-RAM
68
NO USE
O
Not used. (Open)
69
BOOT
I
Boot mode select signal input (L: boot mode)
70
CS2
O
Chip select signal output for the S-RAM
71
LRCK
O
L/R sampling clock signal output for the CD-MP3 processor IC
72
AM1
I
Function mode select signal input (Fixed at H in this set)
73
X2
O
System clock signal output (9 MHz)
74
DVSS
—
Ground
75
X1
I
System clock signal input (9 MHz)
76
DVCC
—
Power supply pin (+3.2 V)
77
USBOC
I
USB over current detect signal input
78
USBPON
O
USB VBUS power ON/OFF control signal output (H: power ON)
79
D+
I/O
Two-way data (positive) bus input/output with the USB connector
80
D-
I/O
Two-way data (negative) bus input/output with the USB connector
81
AM0
I
Function mode select signal input (Fixed at H in this set)
82
NO USE
O
Not used. (Open)
83
DVSS
—
Ground
84
DO
O
Clear to send signal output for the system control IC
85
DATA
I
Audio data input from the CD-MP3 processor IC
86
CLOCK
I
Audio data transfer clock signal input from the CD-MP3 processor IC
87
TXD1
O
Serial data output for the system control IC
88
RXD1
I
Serial data input from the system control IC
89
NO USE
O
Not used. (Open)
90
SDA
I/O
Two-way EEPROM I2C data bus input/output (Not used in this set)
