WM8191 Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8191 Datasheet PDF : 27 Pages
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Advanced Information
WM8191
PIN
NAME
TYPE
DESCRIPTION
21
OP[0]
Digital output Pins OP[13:0] form a Hi-Z digital bi-directional bus. There are several modes:
22
OP[1]
Digital output Hi-Z: when OEB = 1.
23
OP[2]
Digital output 14-bit output: 14-bit data is output on OP[13:0].
8-bit multiplexed output: data is output on OP[13:6] at 2 ∗ ADC conversion rate.
7-bit multiplexed output: data is output on OP[13:6] at 2 ∗ ADC conversion rate.
4-bit multiplexed output: data is output on OP[13:10] at 4 ∗ ADC conversion rate.
See Output Formats section in Device Description for further details.
Input 8-bit: control data is input on OP[13:6] in parallel mode when SCK/RNW = 0,
and SEN/STB = 0.
Output 8-bit: register read back data is output in parallel on OP[13:6] when
SCK/RNW = 1, and SEN/STB = 0, or in serial on pin SDO when SEN/STB = 1.
24
DVDD2
Supply
Digital I/O supply (3.3V/5V).
25
DGND2
Supply
Digital ground (0V).
26
OP[3]
Digital output See pins 21 to 23 for details.
27
OP[4]
Digital output
28
OP[5]
Digital output
29
OP[6]
Digital I/O
30
DGND3
Supply
Digital ground (0V).
31
OP[7]
Digital I/O
See pins 21 to 23 for details.
32
OP[8]
Digital I/O
33
OP[9]
Digital I/O
34
OP[10]
Digital I/O
35
DVDD3
Supply
Digital I/O supply (3.3V/5V).
36
DGND4
Supply
Digital ground (0V).
37
OP[11]
38
OP[12]
39 OP[13]/SDO
Digital I/O
Digital I/O
Digital I/O
See pins 21 to 23 for details.
If the device has been configured to use the serial interface, pin OP[13]/SDO may
be used to output register read-back data when OEB = 0 and SEN has been
pulsed high.
See Serial Interface sections in Device Description for further details.
40
DGND5
Supply
Digital ground (0V).
41
NC
No connection.
42
NRESET
Digital input Reset input, active low. This signal forces a reset of all internal registers and selects
whether the serial or parallel control interface is used. See pin SEN/STB.
43
AVDD1
Supply
Analogue supply (5V).
44
AVDD2
Supply
Analogue supply (5V).
45
AGND5
Supply
Analogue ground (0V).
46
AGND6
Supply
Analogue ground (0V).
47
VRB
Analogue output Lower reference voltage. This pin must be capacitively decoupled to AGND.
48
VRT
Analogue output Lower reference voltage. This pin must be capacitively decoupled to AGND.
WOLFSON MICROELECTRONICS LTD
AI Rev 3.1 April 2001
3
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