Production Data
WM9715L
PIN DESCRIPTION
PIN
1
NAME
DBVDD
XTLIN
TYPE
DESCRIPTION
Supply
Digital I/O Buffer Supply
2
Digital Input
Digital Output
Supply
Clock Crystal Connection 1 / External Clock Input
Clock Crystal Connection 2
3
XTLOUT
DGND1
SDATAOUT
BITCLK
DGND2
SDATAIN
DCVDD
SYNC
4
Digital Ground (return path for both DCVDD and DBVDD)
Serial Data Output from Controller / Input to WM9715L
Serial Interface Clock Output to Controller
5
Digital Input
Digital Output
Supply
6
7
Digital Ground (return path for both DCVDD and DBVDD)
Serial Data Input to Controller / Output from WM9715L
Digital Core Supply
8
Digital Output
Supply
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Digital Input
Digital Input
Analogue Input
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
RESETB
WIPER / AUX4
TPVDD
X+/BR
Analogue Input
Analogue Input
Analogue Input
Analogue Input
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
Y+/TR
X-/TL
Y-/BL
TPGND
PCBEEP
PHONE
MIC1
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Analogue Input
Supply
Line Input to analogue audio mixers, typically used for beeps
Phone Input (RX)
Left Microphone or Microphone 1 Input
MIC2
Right Microphone or Microphone 2 Input
LINEINL
LINEINR
AVDD
Left Line Input
Right Line Input
Analogue Supply (feeds audio DACs, ADCs, PGAs, mic boost,
mixers)
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
AGND
VREF
Supply
Analogue Ground
Analogue Output
Analogue Output
Analogue Input
Analogue Input
Analogue Input
Analogue In / Out
Analogue Output
Supply
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
MICBIAS
COMP1 / AUX1
COMP2 / AUX2
BMON / AUX3
CAP2
MONOOUT
SPKGND
LOUT2
Analogue Output
Analogue Output
Analogue Output
Supply
ROUT2
OUT3
SPKVDD
HPOUTL
HPGND
Analogue Output
Supply
Headphone Ground (feeds output buffers on pins 37, 39, 41)
Headphone Right Output
HPOUTR
AGND2
Analogue Output
Supply
Analogue Ground, Chip Substrate
HPVDD
Supply
Headphone Supply (feeds output buffers on pins 37, 39, 41)
Leave this pin unconnected
DNC
Do not connect
Digital In / Out
Digital Output
Digital In / Out
GENIRQ
PENDOWN
ADCIRQ
General IRQ (Interrupt Request) Output
Indicates that screen is being touched
AUXADC “data ready” interrupt; also determines power up status.
(See “Power Management” and “Applications” sections)
48
SPDIF_OUT
Digital In / Out
SPDIF Digital Audio Output
Note: It is recommended that the QFN ground paddle should be connected to analogue ground on the application PCB.
PD Rev 4.0 December 2007
w
5
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
