WM8352GEB/V Wolfson Microelectronics, WM8352GEB/V Datasheet - Page 181

• Manufacturer Part Number: WM8352GEB/V
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8352GEB/V

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 48 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, 4-Wire)
• Resolution: 12 bit
• Operating Supply Voltage: 3.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: BGA
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 2 ADC/2 DAC
• Supply Current: 260 uA
• Thd Plus Noise: - 83 dB
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 8
• No. Of Output Channels: 6
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 95dB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
w
Note: If a GPIO pin is configured as an open drain output, (ie. GPn_DIR=0, GPn_CFG=1), then the
external pull-up voltage must not be greater than the supply domain for the corresponding GPIO. For
example, if the GPIO supply domain is DBVDD then the external pull-up voltage must be less than or
equal to DBVDD.
Note: Do not enable pull-up and pull-down resistors for the same GPIO pin.
Note: The internal pull-up and pull-down on GPIO10, GPIO11 and GPIO12 may be too weak for
many applications. If pull-up or pull-down is required on these pins, it is recommended to ensure that
the pull resistance is <100kΩ. This can be achieved using an external resistor on its own or in
combination with the internal resistance.
20.1.2
GPIO inputs have an optional de-bounce function to remove glitches from the input signal. This may
be useful when the GPIO is connected to a mechanical switch. The de-bounce function can be
enabled for each pin individually using GPn_DB, with a globally selectable de-bounce time set by
GP_DBTIME.
GPIO alternative functions PWR_ON, PWR_OFF and /WAKEUP are special cases with regard to
debouncing. PWR_ON and /WAKEUP have a debounce time of GP_DBTIME[1:0] + 40ms and
PWR_OFF has a debounce time of GP_DBTIME[1:0] + 5ms.
R128 (80h)
GPIO de-
bounce
R133 (85h)
GPIO Control
Note: n is a number between 0 and 12 that identifies the individual GPIO.
Table 121 Configuring GPIO De-bounce
20.1.3
The GPIO logic can raise a first-level interrupt, GPIO_INT (see Section 24). This interrupt is the
logical OR of the second-level GPIO interrupts described in Table 122.
R30 (1Eh)
GPIO Interrupt
Status
R38 (26h)
GPIO Interrupt
Mask
Note: n is a number between 0 and 12 that identifies the individual GPIO.
Table 122 GPIO Interrupts
ADDRESS
ADDRESS
INPUT DE-BOUNCE
GPIO INTERRUPTS
12:0
12:0
12:0
BIT
BIT
7:6
GPn_EINT [12:0]
“IM_” + name of respective bit
in R30
GPn_DB [12:0]
GP_DBTIME
[1:0]
LABEL
LABEL
DEFAULT
00
1
GPIOn interrupt.
(Trigger controlled by GPn registers.)
Note: This bit is cleared once read.
Mask bits for GPIO interrupts
Each of these bits masks the respective
bit in R30 when it is set to 1 (e.g.
GPn_EINT in R30 does not trigger a
GPIO_INT interrupt when IM_GPn_EINT
in R38 is set).
GPIOn debounce
0 = GPIO is not debounced.
1 = GPIO is debounced (time from
GP_DBTIME[1:0])
De-bounce time for all GPIO inputs
00 = 64μs
01 = 0.5ms
10 = 1ms
11 = 4ms
Note: PWR_ON, PWR_OFF and
/WAKEUP have additional debounce
times.
DESCRIPTION
DESCRIPTION
PD, March 2010, Rev 4.2
WM8352
181