ad1887xst Analog Devices, Inc., ad1887xst Datasheet - Page 4

• Manufacturer Part Number: ad1887xst
• Description: Ac?97 Soundmax Codec
• Manufacturer: Analog Devices, Inc.

AD1887–SPECIFICATIONS
CLOCK SPECIFICATIONS
Parameter
Input Clock Frequency
Recommended Clock Duty Cycle
POWER-DOWN STATES
Parameter
ADC
DAC
ADC + DAC
ADC + DAC + Mixer (Analog CD On)
Mixer
ADC + Mixer
DAC + Mixer
ADC + DAC + Mixer
Analog CD Only (AC-Link On)
Analog CD Only (AC-Link Off)
Standby
Headphone Standby
Specifications subject to change without notice.
TIMING PARAMETERS (GUARANTEED OVER OPERATING TEMPERATURE RANGE)
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
Propagation Delay
RESET Rise Time
Output Valid Delay from Rising Edge of BIT_CLK to SDI Valid
Specifications subject to change without notice.
Guaranteed but not tested.
Output jitter is directly dependent on crystal input jitter.
Set Bits
PR0
PR1
PR1, PR0
LPMIX, PR1, PR0
PR2
PR2, PR0
PR2, PR1
PR2, PR1, PR0
LPMIX, PR5, PR1, PR0
LPMIX, PR1, PR0, PR4, PR5
PR5, PR4, PR3, PR2, PR1, PR0
PR6
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
40
Min
DV
15.82
15.08
3.79
3.85
17.65
15.70
15.07
3.80
3.85
0.06
0.06
17.66
DD
Typ
Min
162.8
162.8
32.56
32.56
5
5
2
2
2
2
2
2
2
2
0
15
Typ
24.576
50
Typ
1.0
1.3
19.5
12.288
81.4
42
38
48.0
20.8
2.5
4
4
4
4
4
4
4
4
AV
30.0
26.3
19.9
18.1
17.4
11.1
8.3
2.1
18.1
18.1
0
26.1
Max
60
DD
Typ
Max
750
48.84
48.84
6
6
6
6
6
6
6
6
1.0
25
15
50
15
Unit
MHz
%
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Unit
µs
ns
µs
µs
ns
MHz
ns
ps
ns
ns
kHz
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
ns