WM9715L
Production Data
SIGNAL RISE AND FALL TIMES
triseCLK
tfallCLK
BITCLK
t
riseSYNC
tfallSYNC
SYNC
triseDIN
tfallDIN
SDATAIN
t
riseDOUT
tfallDOUT
SDATAOUT
Figure 19 Signal Rise and Fall Times (50pF External Load)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
Incoming signals (from the AC’97 controller to the WM9715L)
SDATAOUT rise time
SDATAOUT fall time
SYNC rise time
triseDOUT
tfallDOUT
triseSYNC
tfallSYNC
6
6
6
6
ns
ns
ns
ns
SYNC fall time
Outgoing signals (from the WM9715L to the AC’97 controller)
BITCLK rise time
BITCLK fall time
SDATAIN rise time
SDATAIN fall time
triseCLK
tfallCLK
triseDIN
tfallDIN
6
6
6
6
ns
ns
ns
ns
AC-LINK POWERDOWN
SLOT 1 SLOT 2
SYNC
BITCLK
WRITE
DATA PR4
DON'T
CARE
TO 0X20
SDATAOUT
tS2_PDOWN
SDATAIN
Figure 20 AC-Link Powerdown Timing
AC-Link powerdown occurs when PR4 (register 26h, bit 12) is set (see “Power Management”
section).
PARAMETER
SYMBOL
MIN
TYP
MAX
UNIT
End of Slot 2 to BITCLK and SDATAIN
low
tS2_PDOWN
1.0
µs
PD Rev 4.0 December 2007
60
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
