W681310SG Nuvoton Technology Corporation of America, W681310SG Datasheet - Page 11

• Manufacturer Part Number: W681310SG
• Description: IC VOICEBAND CODEC 3V 1CH 20SOP
• Manufacturer: Nuvoton Technology Corporation of America
• Type: PCMr

Specifications of W681310SG

• Data Interface: PCM Audio Interface
• Resolution (bits): 8 b
• Number Of Adcs / Dacs: 1 / 1
• Sigma Delta: No
• Voltage - Supply, Analog: 2.7 V ~ 5.25 V
• Voltage - Supply, Digital: 2.7 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOP
• For Use With: W681360DK - KIT DEVELOPMENT FOR W681360
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The power supply for the analog and digital parts of the W681310 must be 2.7V to 5.25V. This supply
voltage is connected to the V
ceramic capacitor.
The system has an internal precision voltage reference which generates the V
ground voltage. This voltage needs to be decoupled to V
capacitor.
The analog ground reference voltage is available for external reference at the V
needs to be decoupled to V
voltage is generated from the voltage on the V
The PCM interface is controlled by pins BCLKR, FSR, BCLKT & FST. The input data is received through
the PCMR pin and the output data is transmitted through the PCMT pin. The modes of operation of the
interface are shown in Table 7.3.
The Long Frame Sync or Short Frame Sync interface mode can be selected by connecting the BCLKR
or BCLKT pin to a 64 kHz to 4.800 MHz clock and connecting the FSR or FST pin to the 8 kHz frame
sync. The device synchronizes the data word for the PCM interface and the CODEC sample rate on the
7.4. PCM I
7.3. P
7.3.1. Analog and Digital Supply
7.3.2. Analog Ground Reference Bypass
7.3.3. Analog Ground Reference Voltage Outpt
7.4.1. Long Frame Sync
OWER
NTERFACE
M
4.800 MHz
64 kHz to
BCLKR
ANAGEMENT
V
V
V
V
SS
SS
DD
DD
SS
DD
Table 7.3 PCM Interface mode selections
through a 0.01 F ceramic capacitor. The analog ground reference
pin. The V
8 kHz
FSR
V
V
V
V
DD
DD
SS
SS
DD
REF
pin needs to be decoupled to ground through a 0.1 F
pin and is also used for the internal signal processing.
Long or Short Frame Sync
ISDN GCI with active channel B1
ISDN GCI with active channel B2
ISDN IDL with active channel B1
ISDN IDL with active channel B2
- 11 -
SS
Interface Mode
at the V
Publication Release Date: January 2011
REF
pin through a 0.1 F ceramic
DD
/2 mid-supply analog
AG
pin. This voltage
W681310
Revision B17