WM9705SEFT/RV Wolfson Microelectronics, WM9705SEFT/RV Datasheet - Page 13

• 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
DETAILED TIMING DIAGRAMS
AC-LINK LOW POWER MODE
COLD RESET
w
Test Characteristics:
AVDD = 3.3V, DVDD = 3.3V, AGND = 0V …………..T
All measurements are taken at 10% to 90% DVDD, unless otherwise stated. All the following timing information is guaranteed,
not tested.
Figure 4 AC-Link Powerdown Timing
Figure 5 Cold Reset Timing
Note:
For correct operation SDATAOUT and SYNC must be held LOW for entire RESETB active low
period otherwise the device may enter test mode. See AC’97 specification or Wolfson
applications note WAN104 for more details.
PARAMETER
End of slot 2 to BITCLK SDATAIN
low
PARAMETER
RESETB active low pulse width
RESETB inactive to BITCLK
startup delay
SDATAOUT
SDATAIN
RESETB
BITCLK
BITCLK
SYNC
SLOT 1
TO 0X20
WRITE
A
= 0
t
S2_PDOWN
SLOT 2
o
DATA PR4
C to +70
t
RST_LOW
o
C, unless otherwise stated.
SYMBOL
SYMBOL
t
t
S2_PDOWN
t
RST_LOW
RST2CLK
DON'T
CARE
t
RST2CLK
162.8
MIN
MIN
1.0
TYP
TYP
PD Rev 4.5 July 2008
MAX
MAX
1.0
Production Data
UNIT
UNIT
µ s
µ s
ns
13