AD1888JST Analog Devices Inc, AD1888JST Datasheet - Page 25

• Manufacturer Part Number: AD1888JST
• Description: IC CODEC AUDIO-PC AC'97 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97r

Specifications of AD1888JST

• Data Interface: Serial
• Resolution (bits): 16, 20 b
• Number Of Adcs / Dacs: 2 / 6
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 80 / 90
• Voltage - Supply, Analog: 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.15 V ~ 3.45 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Single Supply Voltage (typ): 3.3/5V
• Single Supply Voltage (min): 3.15/4.75V
• Single Supply Voltage (max): 3.45/5.25V
• Package Type: LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 40. Jack Sense/Audio Interrupt Status Register (Index 72h)
Reg
No.
72h
All register bits are read/write except for JS0ST and JS1ST, which are read only.
JS0INT
JS1INT
JS0ST
JS1ST
JS0MD
JS1MD
JS0TMR
JS1TMR
JSMT[2,0]
JS0DMX
JS1DMX
JS1SPRD
Name
Jack
Sense
Indicates Pin JS0 has generated an interrupt. Remains set until the software services JS0 interrupt, i.e., JS0 ISR should clear this
bit by writing a 0 to it. Note that the interrupt to the system is actually an OR combination of this bit and JS1INT. Also, note that
the actual interrupt implementation is selected by the INTS bit (Register 76h).
It is also possible to generate a software system interrupt by writing a 1 to this bit.
Indicates Pin JS1 has generated an interrupt. Remains set until the software services JS1 interrupt, i.e., JS1 ISR should clear this
bit by writing a 0 to it. See the JS0INT description for additional details.
JS0 STATE. This bit always reports the logic state of the JS0 pin.
JS1 STATE. This bit always reports the logic state of the JS1 pin.
JS0 Mode. This bit selects the operation mode for the JS0 pin.
0 = Jack Sense Mode (reset default)
1 = Interrupt Mode
JS1 Mode. This bit selects the operation mode for the JS1 pin.
0 = Jack Sense Mode (reset default)
1 = Interrupt Mode
JS0 Timer Enable. If this bit is set to a 1, JS0 must be high for greater than 278 ms to be recognized.
JS1 Timer Enable. If this bit is set to a 1, JS1 must be high for greater than 278 ms to be recognized.
JS Mute Enable Selector. These three bits select and enable the Jack Sense muting action (see Table 41).
JS0 Down Mix Control Enable. This bit enables JS0 to control the down-mix function. This function allows a digital mix of six
channels of audio into 2-channel audio. The mix can then be routed to the stereo Line_OUT or HP_OUT jacks. When this bit is
set to 1, JS0 = 1 will activate the down-mix conversion. See the DMIX description in Register 76h. The DMIX bits select the
down-mix implementation type and can also force the function to be activated.
JS1 Down Mix Control Enable. This bit enables 2-channel to 6-channel audio spread function when both Jack Senses are active
(logic state 1).
Note that the SPRD bit can also force the spread function without being gated by the Jack Senses. See this bit’s description in
Register 76h for a better understanding of the spread function.
JS Spread Control Enable. This bit enables 2-channel to 6-channel audio spread function when both Jack Senses are active
(logic state 1).
Note that the SPRD bit can also force the spread function without being gated by the Jack Senses. See this bit’s description in
Register 76h for a better understanding of the spread function.
D15
JS1
SPRD
D14
JS1
DMX
D13
JS0
DMX
D12
JS
MT2
D11
JS
MT1
D10
JS
MT0
Rev. A | Page 25 of 32
D9
X
D8
X
D7
JS1
TMR
D6
JS0
TMR
D5
JS1
MD
D4
JS0
MD
D3
JS1
ST
D2
JS0
ST
D1
JS1
INT
D0
JS0
INT
AD1888
Default
0000h