WM9704Q Datasheet, PDF (8/35 Pages) Wolfson Microelectronics plc – 4-Channel Surround Sound Codec

WM9704Q
WARM RESET
SYNC
t_{SYNC_HIGH}
t_SYNC2CLK
Production Data
BIT_CLK
Figure 3 Warm Reset Timing
PARAMETER
SYNC active high pulse width
SYNC inactive to BIT_CLK
startup delay
SYMBOL
tSYNC_HIGH
tSYNC2_CLK
MIN
162.4
TYP
1.3
MAX
UNIT
µs
ns
CLOCK SPECIFICATIONS
BIT_CLK
SYNC
t_{CLK_HIGH}
t_{CLK_PERIOD}
t_{SYNC_HIGH}
t_{CLK_LOW}
t_{SYNC_LOW}
t_{SYNC_PERIOD}
Figure 4 Clock Specifications (50pF External Load)
PARAMETER
SYMBOL
BIT_CLK frequency
BIT_CLK period
BIT_CLK output jitter
tCLK_PERIOD
BIT_CLK high pulse width (Note 1)
tCLK_HIGH
BIT_CLK low pulse width (Note 1)
tCLK_LOW
SYNC frequency
SYNC period
SYNC high pulse width
tSYNC_PERIOD
tSYNC_HIGH
SYNC low pulse width
tSYNC_LOW
Note: Worst case duty cycle restricted to 40/60
MIN
32.56
32.56
TYP
12.288
81.4
40.7
40.7
48.0
20.8
1.3
19.5
MAX
750
48.84
48.84
UNIT
MHz
ns
ps
ns
ns
KHz
µs
µs
µs
WOLFSON MICROELECTRONICS LTD
PD Rev 2.3 January 2001
8