wm9709 Wolfson Microelectronics plc, wm9709 Datasheet - Page 6

• Manufacturer Part Number: wm9709
• Description: Ac-link Interface Audio Dac
• Manufacturer: Wolfson Microelectronics plc

WM9709
CLOCK SPECIFICATIONS
DATA OUTPUT AND INPUT TIMES
ATE IN CIRCUIT TEST MODE
w
Figure 2 Clock Specifications (50pF External Load)
Note: Worst case duty cycle restricted to 40/60.
Figure 3 Data Output and Input Timing
When the WM9709 is placed in the ATE test mode, its digital AC-link outputs (BITCLK and
SDATAIN) are driven to a high impedance state. This allows ATE in circuit testing of the WM9709.
SDATAOUT,
PARAMETER
BITCLK frequency
BITCLK period
BITCLK output jitter
BITCLK high pulse width
BITCLK low pulse width
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
PARAMETER
Setup to falling edge of BITCLK
Hold from falling edge of
BITCLK
Output Valid Delay from rising
edge of BITCLK
SDATAIN
BITCLK
BITCLK
SYNC,
SYNC
t
SYNC_HIGH
t
CLK_PERIOD
t
CLK_HIGH
t
CO
t
t
SYNC_PERIOD
SYMBOL
t
SYMBOL
CLK_PERIOD
t
t
SYNC_HIGH
t
SYNC_LOW
CLK_HIGH
CLK_LOW
t
t
SETUP
HOLD
t
CO
t
SETUP
t
SYNC_PERIOD
32.56
32.56
10.0
10.0
MIN
MIN
t
CLK_LOW
t
SYNC_LOW
t
HOLD
12.288
81.4
40.7
40.7
48.0
20.8
19.5
TYP
TYP
1.3
PD Rev 1.3 February 2003
48.84
48.84
MAX
MAX
15.0
750
Production Data
UNIT
UNIT
MHz
kHz
ns
ps
ns
ns
ns
ns
ns
s
s
s
6