ad1843jst Analog Devices, Inc., ad1843jst Datasheet - Page 9

• Manufacturer Part Number: ad1843jst
• Description: Serial-port 16-bit Soundcomm Codec
• Manufacturer: Analog Devices, Inc.

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Analog Signals
Pin Name
LINLP
LINLN
LINRP
LINRN
MICL
MICR
AUX1L
AUX1R
AUX2L
AUX2R
AUX3L
AUX3R
MIN
MOUT
LOUT1L
LOUT1R
HPOUTL
HPOUTC
HPOUTR
LOUT2LP
LOUT2LN
LOUT2RP
LOUT2RN
SUML
SUMR
Clocks
Pin Name
CLKOUT
SYNC[3:1]
CONV[3:1] 75, 71, 67
BIT[3:1]
PQFP
76
57, 56, 55
74, 70, 66
PQFP
28
29
26
27
18
17
16
15
14
13
12
11
19
35
36
34
47
46
45
32
33
30
31
43
42
TQFP
95
71, 70, 69
94, 89, 84
92, 87, 82
TQFP
35
36
33
34
21
22
20
19
18
17
16
15
23
44
45
43
58
57
56
40
41
38
39
54
53
I/O
O
I
O
O
I/O
I
I
I
I
I
I
I
I
I
I
I
I
I
O
O
O
O
O
O
O
O
O
I
I
Description
Clock Output. This signal is a buffered version of XTALO (with a duty cycle
restored to at least 60%/40%), the crystal clock output. This pin is enabled by
default but can be three-stated by programming a bit in Control Register
Address 28. The CLKOUT frequency is 24.576 MHz.
Conversion Clock Outputs. These output clocks have an average period equal to (or 128
programming bits in Control Register Address 28.
Sync Inputs. These SYNC signals are used as the clock source inputs to three
receptive PLLs in the AD1843. These pins accept a clock at, or at a multiple of,
the desired sample rate for A-to-D and D-to-A conversions. These inputs are
ignored if a sample rate is programmed directly, but should never be left floating.
times) the internal sample rates of the AD1843. These clock outputs are three-stated
by default but can be enabled by programming bits in Control Register Address 28.
Bit Clock Outputs. These output clocks can be individually programmed to
multiples of the sample rates. Support for V.34 or V.32 bit rates is available.
These clock outputs are three-stated by default but can be enabled by
Line Output #1 Left Channel.
Headphone Output Left Channel.
Line Output #2 Right Channel Positive Differential Signal.
Line Output #2 Right Channel Negative Differential Signal.
Description
Line Input Left Channel Positive Differential Signal.
Line Input Left Channel Negative Differential Signal.
Line Input Right Channel Positive Differential Signal.
Line Input Right Channel Negative Differential Signal.
Microphone Input Left Channel. Microphone input for the left channel. This
signal can be either line level or –20 dB from line level.
Microphone Input Right Channel. Microphone input for the right channel.
This signal can be either line level or –20 dB from line level.
Auxiliary #1 Left Channel Line Input.
Auxiliary #1 Right Channel Line Input.
Auxiliary #2 Left Channel Line Input.
Auxiliary #2 Right Channel Line Input.
Auxiliary #3 Left Channel Line Input.
Auxiliary #3 Right Channel Line Input.
Monaural (Mono) Line Input.
Monaural (Mono) Line Output.
Line Output #1 Right Channel.
Headphone Common Return.
Headphone Output Right Channel.
Line Output #2 Left Channel Positive Differential Signal.
Line Output #2 Left Channel Negative Differential Signal.
Mixer Line Input Left Channel.
Mixer Line Input Right Channel.
–9–
AD1843