WM9705SEFT/RV Wolfson Microelectronics, WM9705SEFT/RV Datasheet - Page 2

• Manufacturer Part Number: WM9705SEFT/RV
• Description: Audio CODECs Stereo AC'97 Codec T/P Interface
• Manufacturer: Wolfson Microelectronics

Specifications of WM9705SEFT/RV

• Number Of Adc Inputs: 1
• Number Of Dac Outputs: 1
• Conversion Rate: 48 KSPs
• Interface Type: AC97
• Resolution: 12 bit
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 2 ADC, 2 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM9705
DESCRIPTION ............................................................................................................1
FEATURES..................................................................................................................1
APPLICATIONS ..........................................................................................................1
BLOCK DIAGRAM ......................................................................................................1
TABLE OF CONTENTS ..............................................................................................2
ORDERING INFORMATION .......................................................................................4
ABSOLUTE MAXIMUM RATINGS..............................................................................4
RECOMMENDED OPERATING CONDITIONS ..........................................................5
PIN CONFIGURATION................................................................................................6
PIN DESCRIPTION .....................................................................................................7
POWER CONSUMPTION .........................................................................................12
DETAILED TIMING DIAGRAMS ...............................................................................13
DEVICE DESCRIPTION............................................................................................16
SERIAL INTERFACE REGISTER MAP ....................................................................39
w
AC-LINK LOW POWER MODE .........................................................................................13
COLD RESET....................................................................................................................13
WARM RESET ..................................................................................................................14
CLOCK SPECIFICATIONS ...............................................................................................14
DATA SETUP AND HOLD (50PF EXTERNAL LOAD).......................................................15
SIGNAL RISE AND FALL TIMES ......................................................................................15
INTRODUCTION ...............................................................................................................16
AC’97 FEATURES.............................................................................................................16
NON - AC’97 FEATURES..................................................................................................17
PEN DIGITIZER AND AUXILIARY ADC ............................................................................19
3-D STEREO ENHANCEMENT.........................................................................................19
VARIABLE SAMPLE RATE SUPPORT .............................................................................20
SPDIF OR I
PRIMARY/SECONDARY ID SUPPORT ............................................................................21
HEADPHONE DRIVE AND HEADSET AUTODETECT .....................................................21
DATA SLOT MAPPING .....................................................................................................23
AC-LINK DIGITAL SERIAL INTERFACE PROTOCOL ......................................................23
AC-LINK AUDIO OUTPUT FRAME (SDATAOUT) ............................................................25
AC-LINK AUDIO INPUT FRAME (SDATAIN) ....................................................................27
AC-LINK LOW POWER MODE .........................................................................................29
WAKING UP THE AC-LINK...............................................................................................29
SERIAL INTERFACE REGISTER MAP DESCRIPTION....................................................30
REGISTER 28H – EXTENDED AUDIO ID.........................................................................34
REGISTER 2AH – EXTENDED AUDIO STATUS AND CONTROL REGISTER ................35
REGISTER 2CH AND 32H – AUDIO SAMPLE RATE CONTROL REGISTERS................35
REGISTERS 3AH – SPDIF CONTROL REGISTER ..........................................................36
VENDOR SPECIFIC REGISTERS (INDEX 5AH - 7AH) ....................................................36
2
S DIGITAL AUDIO DATA OUTPUT...............................................................20
TABLE OF CONTENTS
PD Rev 4.5 July 2008
Production Data
2