W6810_1 WINBOND [Winbond], W6810_1 Datasheet - Page 15

• Manufacturer Part Number: W6810_1
• Manufacturer: WINBOND [Winbond]

W6810 Conversion to W6811.
The W6811 is a general-purpose single channel PCM CODEC with pin-selectable µ-Law or A-
Law companding. The device is compliant with the ITU G.712 specification. It operates off a
separated analog (5V) and digital (3V) power supplies. Functions performed include digitization
and reconstruction of voice signals, and band limiting and smoothing filters required for PCM
systems. The filters are compliant with ITU G.712 specification. W6811 performance is specified
over the industrial temperature range of –40°C to+85°C.
The W6811 includes an on-chip precision voltage reference and an additional power amplifier,
Capable of driving 300 ohm loads differentially up to a level of 6.3V peak-to-peak. The analog
section is fully differential, reducing noise and improving the power supply rejection ratio.
For evaluation of the W6811, use W6810DK prototype area to connect the W6811 to
W6810 socket as shown below (only if it is desired to connect a separate 3V power
supply for digital I/O otherwise use the direct connection below)
WECA
2727 N First Street, San Jose CA 95134
+5V
100uF
8
5
C4
U1
IN
SHDN
LT1521-3
SENSE
GND
GND
GND
3.0V
1
2
3
6
7
+
C3
47UF Tant
VDDD
L1
INDUCTOR
47UF Tant
C2
+
VCCD
R1
33K
JP1
2
1
10
1
2
3
4
5
6
7
8
9
C1
.1UF
Vref
RO
PAI
PAO-
PAO+
VDD
FSR
PCMI
BCLKR
PUI
U1
2
4
6
8
1
A0
A1
A2
A3
OE
VDDD
BCLKT
PCMO
MCLK
MC74HC244ADW
VAG
VSS
FSX
U/A
AI+
AO
AI-
Y0
Y1
Y2
Y3
U3A
W6810
20
19
18
17
16
15
14
13
12
11
18
16
14
12
11
13
15
17
19
A0
A1
A2
A3
OE
VDDD
Y0
Y1
Y2
Y3
U3B
MC74HC244ADW
10
11
12
1
2
3
4
5
6
7
8
9
9
7
5
3
Vref
RO-
PAI
PAO-
PAO+
VDDA
NC
VDDD
FSR
PCMR
BCLKR
PUI
U2
W6810DK
W6811
BCLKT
VSSD
PCMT
MCLK
VAG
VSS
FST
U/A
AI+
AO
NC
AI-
24
23
22
21
20
19
18
17
16
15
14
13
15