wm9713 Wolfson Microelectronics plc, wm9713 Datasheet - Page 12

• Manufacturer Part Number: wm9713
• Description: Ac?97 Audio + Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

WM9713L
SIGNAL TIMING REQUIREMENTS
AC97 INTERFACE TIMING
w
CLOCK SPECIFICATIONS
Figure 1 Clock Specifications (50pF External Load)
1.
Note:
Test Conditions
DBVDD = 3.3V, DCVDD = 3.3V, DGND1 = DGND2 = 0V, TA = -25°C to +85°C, unless otherwise
stated.
BITCLK frequency
BITCLK period
BITCLK output jitter
BITCLK high pulse width (Note 1)
BITCLK low pulse width (Note 1)
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
Worst case duty cycle restricted to 45/55
BITCLK
SYNC
PARAMETER
t
SYNC_HIGH
t
CLK_PERIOD
t
CLK_HIGH
t
t
SYNC_PERIOD
t
t
SYMBOL
CLK_PERIOD
t
SYNC_HIGH
t
SYNC_LOW
CLK_HIGH
CLK_LOW
t
SYNC_PERIOD
t
CLK_LOW
t
SYNC_LOW
MIN
36
36
12.288
PP Rev 3.2 September 2008
81.4
40.7
40.7
20.8
19.5
TYP
1.3
48
MAX
750
45
45
Pre-Production
UNIT
MHz
kHz
ns
ps
ns
ns
µs
µs
µs
12