SAM0357-070600
ESS Technology, Inc.
ES4428/ES4427 DATA SHEET
PRELIMINARY
ES4427 PINOUT
Figure 2 ES4427 Pinout
ES4427 PIN DESCRIPTION
1
MIC1
MIC2
AOL+
AOL-
AOR-
AOR+
VCCAA
VREFP
VCM
VSSAA
AUX15/IR
AUX14
AUX13
RBCK/SER_IN
AUX12/C2PO
AUX11/IRQ
AUX10
RSD/SEL_PLL0
VCC
VSS
DSC_D7
NC
DSC_D6
NC
DSC_D5
GND
GND
GND
GND
VCC
VSS
GND
DSC_D4
GND
DSC_D3
GND
DSC_D2
GND
DSC_D1
VSS
TSD
AUX9
TW
S/
SPL
L
_
O
UT
AUX8
MC
L
K
VCC
MU
T
E
AUX7
RES
E
T_B
DCL
K/
EXT
_
C
L
K
AUX2
DSC_
S
AUX1
DSC_
D0
AUX0
DSC_
C
VCC
NC
NC
VSS
NC
NC
NC
NC
NC
VSS
VSS
RS
T
O
U
T
_B
RW
S/
SEL
_
P
L
L
1
TBCK
YDAC
VS
SA
V
VS
SA
V
VDAC
ACAP
VCC
AUX6
AUX5
AUX4
AUX3
XO
UT
VS
S
VCC
XIN
VS
S
NC
VS
S
VCC
NC
2
XPCL
K
VS
SAA
NC
VREF
M
NC
NC
VS
SA
V
VS
SA
V
CDAC
VCCA
V
VCCA
V
31
30
51
50
80
81
100
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
ES4427
100-pin PQFP
Name
Number
I/O
Definition
VSS
1, 25, 26, 31, 72,
75, 77, 91, 100
--
Ground.
NC
2:4,27:30, 54, 55, 58, 61,
64, 76, 79, 82, 84
No connect. Do not connect to these pins.
VCC
5,16,32,66,73,78,90
I
Voltage supply, 5 V.
GND
52, 54, 55, 86:89, 92, 94,
96, 98
--
Analog ground.
DSC_C
6
I
Clock for programming to access internal registers.
AUX0[0]
7
I/O
Auxiliary bus 0.
DSC_D[7:0]
8, 81, 83, 85, 93,
95, 97, 99
I/O
Data for programming to access internal registers.
AUX0[1]
9
I/O
Auxiliary bus 0.
DSC_S
10
I
Strobe for programming to access internal registers.
AUX0[2]
11
I/O
Auxiliary bus 0.
DCLK
12
O
DCLK clock input for test mode.
RST#
13
I
Input from reset circuit.
AUX0[6]
14
I/O
Auxiliary bus 0.