AD1885 Analog Devices, AD1885 Datasheet - Page 5

• Manufacturer Part Number: AD1885
• Description: AC97 SoundMAX Codec
• Manufacturer: Analog Devices

TIMING PARAMETERS
Parameter
RESET Active Low Pulsewidth
RESET Inactive to BIT_CLK Startup Delay
SYNC Active High Pulsewidth
SYNC Low Pulsewidth
SYNC Inactive to BIT_CLK Startup Delay
BIT_CLK Frequency
BIT_CLK Period
BIT_CLK Output Jitter
BIT_CLK High Pulsewidth
BIT_CLK Low Pulsewidth
SYNC Frequency
SYNC Period
Setup to Falling Edge of BIT_CLK
Hold from Falling Edge of BIT_CLK
BIT_CLK Rise Time
BIT_CLK Fall Time
SYNC Rise Time
SYNC Fall Time
SDATA_IN Rise Time
SDATA_IN Fall Time
SDATA_OUT Rise Time
SDATA_OUT Fall Time
End of Slot 2 to BIT_CLK, SDATA_IN Low
Setup to Trailing Edge of RESET (Applies to SYNC, SDATA_OUT)
Rising Edge of RESET to HI-Z Delay (ATE Test Mode)
Propagation Delay
RESET Rise Time
NOTES
1
2
Specifications subject to change without notice.
Guaranteed, not tested.
Output jitter is directly dependent on crystal input jitter.
2
1
(GUARANTEED OVER OPERATING TEMPERATURE RANGE)
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RST_LOW
RST2CLK
SYNC_HIGH
SYNC_LOW
SYNC2CLK
CLK_PERIOD
CLK_HIGH
CLK_LOW
SYNC_PERIOD
SETUP
HOLD
RISECLK
FALLCLK
RISESYNC
FALLSYNC
RISEDIN
FALLDIN
RISEDOUT
FALLDOUT
S2_PDOWN
SETUP2RST
OFF
Min
50
80
162.8
36.62
36.62
5
5
2
2
2
2
2
2
2
2
0
15
Typ
833
19.5
12.288
81.4
40.69
40.69
48.0
20.8
2.5
4
4
4
4
4
4
4
4
AD1881A
Max
750
44.76
44.76
10
10
10
10
10
10
10
10
10
25
15
50
Unit
ns
µs
ns
µs
ns
MHz
ns
ps
ns
ns
kHz
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns