AD1986JSTZ-REEL Analog Devices Inc, AD1986JSTZ-REEL Datasheet - Page 41

• Manufacturer Part Number: AD1986JSTZ-REEL
• Description: IC CODEC HD AUDIO AC'97 48LQFP
• Manufacturer: Analog Devices Inc
• Series: SoundMAX®r
• Type: Audio Codec '97, HDr

Specifications of AD1986JSTZ-REEL

• Data Interface: Serial
• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 6
• Sigma Delta: No
• Dynamic Range, Adcs / Dacs (db) Typ: 85 / 91
• Voltage - Supply, Analog: 4.5 V ~ 5.5 V
• Voltage - Supply, Digital: 2.97 V ~ 3.63 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Preliminary Technical Data
Register
JS4–7H
Interrupt
Mode Select
x
MISC CONTROL BITS 3 (REGISTER 0x7A)
Reg
0x7A
Table 65.
Register
MMIX
GPO
LOHPEN
LVREF [2:0]
(Line In
VREF_OUT)
LOSEL
(LINE_OUT
Amplifiers
Input Select)
JSINVA
Jack Sense
Invert
Name
Misc Control Bits 3 JSINVB
Function
Used in conjunction with the OMS [2:0] (0x74 D10:08), MS (0x20 D08), and 2CMIC (0x76 D06) bits to mix the microphone
selector left/right channels. If the MMIX bit is set, the 2CMIC and MS bits are ignored.
MMIX
0
1
GPO
0
1
Enables the headphone drive on the LINE_OUT pins. Disabling the headphone drive is the same as powering it down (see
the PR6 bit (0x26 D14)).
LOHPEN
0
1
Sets the voltage/state of the LINE_IN VREF_OUT signal. VREF_OUT is used to power microphone style devices plugged into
the connected jack circuitry. The VREF_OUT pin must be connected to both the left and right channels through external
resistors to function properly. Selections other than those defined are invalid and should not be programmed.
LVREF [2:0]
000
001
010
100
This bit allows the LINE_OUT output amplifiers to be driven by the mixer or the surround DACs. The main purpose for this is
to allow swapping of the frontand surround channels to make better use of the SURR/HP_OUT output amplifiers. This bit
should normally be used in tandem with the HPSEL bit (see below).
LOSEL
0
1
SENSE_A: Select the style of switches used on the audio jacks connected to Sense A.
JSINVA
0
1
Function
This bit selects the audio interrupt implementation path (for JS4 to 7). This bit does not generate an interrupt, rather it
steers the path of the generated interrupt.
JS4 to 7H
0
1
Reserved
D15
D14
HPSEL1
Interrupt Mode—JS4 to 7
Bit 0 SLOT 12 (modem interrupt)
Slot 6 valid bit (MIC ADC interrupt)
D13
HPSEL0
D12
LOSEL
D11
JSINVA
D10
LVREF 2
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Function
Microphone channels are not mixed
The left/right channels from the microphone selector are mixed
Sets the state of the GPO pin
GPO pin is at logic low (DV
GPO pin is at logic high (DV
LINE_OUT headphone drive is disabled
LINE_OUT headphone drive is enabled
Hi-Z
2.25 V
0V
3.70 V
LINE_OUT Select
LINE_OUT amplifiers are driven by the
analog mixer outputs
LINE_OUT amplifiers are driven by the
surround DAC
Jack Sense Invert—SENSE_A
SENSE_A configured for normally-
open (NO) switches
SENSE_A configured for normally-closed
(NC) switches
Function
Function
5.0 AV
D9
LVREF1
DD
D8
LVREF 0
D7
x
LINE_IN VREF_OUT Setting
SS
DD
D6
x
)
)
3.3 V AV
Hi-Z
2.25 V
0 V
2.25 V
D5
x
D4
LOHPEN
DD
Default
Default
Default
Default
Default
Default
D3
GPO
Default
D2
MMIX
D1
x
Default
Default: 0
D0
x
AD1986
0x0000
Default