wm9712l Wolfson Microelectronics plc, wm9712l Datasheet - Page 5

• Manufacturer Part Number: wm9712l
• Description: Ac?97 Audio And Touchpanel Codec
• Manufacturer: Wolfson Microelectronics plc

Production Data
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Note: It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
PIN DESCRIPTION
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
1
2
3
4
5
6
7
8
9
GPIO4 / ADA / MASK
GPIO5 / SPDIF_OUT
GPIO3 / PENDOWN
COMP1 / AUX1
COMP2 / AUX2
WIPER / AUX4
BMON / AUX3
GPIO2 / IRQ
SDATAOUT
MONOOUT
SDATAIN
SPKGND
MICBIAS
SPKVDD
HPOUTR
RESETB
PCBEEP
HPOUTL
XTLOUT
LINEINR
LINEINL
DCVDD
PHONE
HPGND
DBVDD
DGND1
BITCLK
DGND2
TPGND
AGND2
HPVDD
TPVDD
ROUT2
LOUT2
GPIO1
XTLIN
SYNC
X+/BR
Y+/TR
AVDD
AGND
NAME
VREF
CAP2
OUT3
Y-/BL
X-/TL
MIC1
MIC2
Analogue In / Out
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Output
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Digital In / Out
Digital In / Out
Digital In / Out
Digital In / Out
Digital In / Out
Digital Output
Digital Output
Digital Output
Digital Input
Digital Input
Digital Input
Digital Input
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
Supply
TYPE
Digital I/O Buffer Supply
Clock Crystal Connection 1 / External Clock Input
Clock Crystal Connection 2
Digital Ground (return path for both DCVDD and DBVDD)
Serial Data Output from Controller / Input to WM9712L
Serial Interface Clock Output to Controller
Digital Ground (return path for both DCVDD and DBVDD)
Serial Data Input to Controller / Output from WM9712L
Digital Core Supply
Serial Interface Synchronisation Pulse from Controller
Reset (asynchronous, active Low, resets all registers to their default)
Top Sheet Connection for 5-wire Touchpanels / Auxiliary ADC Input
Touchpanel Driver Supply
Touchpanel Connection: X+ (Right) for 4-wire / bottom right for 5-wire
Touchpanel Connection: Y+ (Top) for 4-wire / top right for 5-wire
Touchpanel Connection: X- (Left) for 4-wire / top left for 5-wire
Touchpanel Connection: Y- (Bottom) for 4-wire / bottom left for 5-wire
Touchpanel Driver Ground
Line Input to analogue audio mixers, typically used for beeps
Phone Input (RX)
Left Microphone or Microphone 1 Input
Right Microphone or Microphone 2 Input
Left Line Input
Right Line Input
Analogue Supply (feeds audio DACs, ADCs, PGAs, mic boost,
mixers)
Analogue Ground
Internal Reference Voltage (buffered CAP2)
Bias Voltage for Microphones (buffered CAP2 × 1.8)
Comparator 1 (dead battery alarm) / Auxiliary ADC Input 1
Comparator 2 (low battery alarm) / Auxiliary ADC Input 2
Battery Monitor Input / Auxiliary ADC Input 3
Internal Reference Voltage (normally AVDD/2, if not overdriven)
Mono Output, intended for Phone TX signal
Speaker Ground (feeds output buffers on pins 35 and 36)
Left Output 2 (Speaker, Line or Headphone)
Right Output 2 (Speaker, Line or Headphone)
Analogue Output 3 (from AUXDAC or headphone pseudo-ground)
Speaker Supply (feeds output buffers on pins 35 and 36)
Headphone Left Output
Headphone Ground (feeds output buffers on pins 37, 39, 41)
Headphone Right Output
Analogue Ground, Chip Substrate
Headphone Supply (feeds output buffers on pins 37, 39, 41)
GPIO Pin 1
GPIO Pin 2 or IRQ (Interrupt Request) Output
GPIO Pin 3 or Pen Down Output
GPIO Pin 4 or ADA (ADC Data Available) Output or Mask input (On
reset, pin level configures device power up status. See Applications
section for external components configuration)
GPIO Pin 5 or SPDIF Digital Audio Output
DESCRIPTION
PD Rev 4.5 August 2006
WM9712L
5