ES1921 ESS Technology, Inc., ES1921 Datasheet - Page 3

• Manufacturer Part Number: ES1921
• Manufacturer: ESS Technology, Inc.

ES1921 PRODUCT BRIEF
ES1921 PIN DESCRIPTIONS
Table 1lists the ES1921pin descriptions.
Table 1 ES1921 Pin Descriptions
ESS Technology, Inc.
Names
DV
XTL_IN
XTL_OUT
DV
SDATA_OUT
BIT_CLK
DV
SDATA_IN
DV
SYNC
RESET #
PC_BEEP
PHONE
AUX_L
AUX_R
VIDEO_L
VIDEO_R
CD_L
CD_GND
CD_R
MIC1
MIC2
LINE_IN_L
LINE_IN_R
AV
AV
V
V
AFILT1
AFILT2
CAP1
CAP2
REF
REF
DD
SS
DD
SS
SS
DD
OUT
1
1
2
1
1
2
Pin Numbers
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
I/O
G
O
G
O
G
O
O
O
O
O
P
P
P
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Digital VDD.
Oscillator input (24.576 MHz).
Oscillator output.
Digital ground.
AC
Serial data clock (12.288 MHz).
Digital ground.
AC
Digital VDD.
Fixed-rate sample sync (48 kHz).
Hardware reset.
PC speaker out.
Telephone speaker input.
Aux left channel input.
Aux right channel input.
Video left channel input.
Video right channel input.
CD left channel input.
CD ground.
CD right channel input.
First microphone input.
Second microphone input.
Line-in left channel input.
Line-in right channel input.
Analog VDD.
Analog ground.
DAC reference voltage filter capacitor.
Mic reference voltage output (2.5V, 1.25 mA).
Anti-Aliasing filter cap (ADC channel).
Anti-Aliasing filter cap (ADC channel).
Analog output holdoff delay.
ADC reference capacitor.
‘
‘
97 Serial data in.
97 Serial data ou.t
Descriptions
SAM0353-022001
3