GP2/DO
GP3/WSO
GP4/BCKO
SHTCB
NC
D–
D+
V
DD
I
VssI
VssE
V
DD
E
NC
VssX
XTAL1
XTAL2
V
DD
X
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
GP1/DI
SDA
SCL
GP5/WSI
NC
GP0/BCKI
RTCB
TC
VOUTL
V
DD
O
VssO
VOUTR
V
DD
A
VssA
Vref
NC
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
GP2/DO
GP3/WSO
GP4/BCKO
SHTCB
NC
D–
D+
V
DD
I
VssI
VssE
V
DD
E
NC
VssX
XTAL1
XTAL2
V
DD
X
I/O
I/O
I/O
I
O
O
O
∗
1
∗
1
∗
1
∗
2
Unconnected
Negative
Positive
Power supply
Ground
Ground
Power supply
Unconnected
Ground
Input
Output
Power supply
Data line of the differential
data bus common to the
USB-standard.
(for digital core)
(for digital I/O)
(for Crystal oscillator)
(for OPE-AMP.)
(for analog)
∗
1
Serial data (I
2
C-Bus)
Serial clock (I
2
C-Bus)
∗
1
Unconnected
∗
1
∗
2
∗
2
Lch Output voltage
Power supply
Ground
Rch output voltrage
Power supply
Ground
Reference Voltage
Unconnected
GP1/DI
SDA
SCL
GP5/WSI
NC
GP0/BCKI
RTCB
TC
VOUTL
V
DD
O
VssO
VOUTR
V
DD
A
VssA
Vref
NC
No.
No.
Name
I/O
I/O
Function
Function
Name
NOTE)
∗
1 : Normally unconnected.
∗
2 : Normally connected to ground.
18
Vref
3rd-ORDER
NOISE SHAPER
REFERENCE VOLTAGE
VARIABLE HOLD REGISTER
LEFT DAC
OSC
TIMING
RIGHT DAC
FOR DIGITAL I/O
FOR DIGITAL CORE
FIFO REGISTERS
UP-SAMPLE FILTER
USB-PROCESSOR
ANALOG FRONT-END
AUDIO FEATURE
PROCESSING DSP
SAMPLE
FREQUENCY
GENERATOR
MICRO-
CONTROLLER
DIGITAL I/O
fs
fs
64fs
128fs
7
6
D+
D–
+
–
+
–
29
27
32
1
2
3
16
15
14
13
24
V
DD
X
XTAL2
XTAL1
VssX
VOUTL
TEST
CONTROL
BLOCK
4
20
25
GP5/WSI
GP0/BCKI
GP1/DI
GP2/DO
GP3/WSO
GP4/BCKO
SHTCB
RTCB
TC
30
11
10
31
SCL
SDA
FOR ANALOG
20
19
V
DD
A
VssA
9
8
V
DD
E
VssE
VssI
V
DD
I
FOR OPE-AMP
23
21
22
V
DD
O
VOUTR
VssO
■
IC DATA
IC201: UDA1321PS
Universal Serial Bus (USB)
Digital-to-Analog Converter (DAC)
A0
A1
A2
Vss
1
2
3
4
Vcc
WP
SCL
SDA
8
7
6
5
TOP VIEW
1
2
3
4
8
7
6
5
A0
A1
A2
Vss
O
I/O
∗
1
∗
1
∗
1
Ground
Power supply
∗
2
Serial clock (I
2
C-Bus)
Serial data (I
2
C-Bus)
Vcc
WP
SCL
SDA
No.
No.
Name
I/O
I/O Function
Function
Name
NOTE)
∗
1 : Normally connected to ground.
∗
2 : Normally connected to power supply.
4
8
7
5
6
I/O
CONTROL
LOGIC
MEMORY
CONTROL
LOGIC
XDEC
EEPROM
ARRAY
PAGE LATCHES
HV GENERATOR
YDEC
SENSE AMP
R/W CONTROL
Vss
Vcc
SDA SCL
WP
IC202: M24C02-BN6
2k 2.5V CMOS Serial
Electrically Erasable PROM
(EEPROM)
23
YST-MS50/YST-MS55D
YST-MS55D