參數(shù)資料
型號(hào)： ADAU1442YSVZ-3A
廠商： Analog Devices Inc
文件頁數(shù)： 68/93頁
文件大?。?/td> 0K
描述： IC SIGMADSP 28B 175MHZ 100TQFP
標(biāo)準(zhǔn)包裝： 1
系列： SigmaDSP®
類型： 音頻處理器
應(yīng)用： 車載音頻
安裝類型： 表面貼裝
封裝/外殼： 100-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝： 100-TQFP-EP（14x14）
包裝： 托盤
Data Sheet
ADAU1442/ADAU1445/ADAU1446
Rev. D | Page 69 of 92
MULTIPURPOSE PINS
12 multipurpose pins that can be used either as digital general-
purpose inputs/outputs (GPIOs) or as inputs to the 4-channel
auxiliary ADC.
Each of the 12 multipurpose pins is controlled by a 4-bit mode.
Pins can be configured as digital inputs, digital outputs, or, when
applicable, as an analog input to the auxiliary ADC. A debounce
circuit is included for use with digital inputs, and it has a range
of selectable time constants between 0.3 s and 40 s.
When the inputs or outputs are driven by the control port, the
value can be directly read or controlled by reading or writing
the addresses listed in Table 66.
Each of these registers is four bytes long and is in 5.23 format.
To write a Logic 1, the bytes written should be 0x00, 0x80, 0x00,
and 0x00. To write a Logic 0, the bytes written should be 0x00,
0x00, 0x00, and 0x00.
When the outputs are driven by the core, they are represented
as MP outputs in the SigmaStudio programming tool and are
driven directly from the DSP program in 5.23 format.
In addition, there are 12 multipurpose pin value registers that
allow the input/output data to be written to or read directly
from the control port. The corresponding addresses are listed in
Table 68. Each value register contains four bytes and can only
store one of two values: logic high or logic low. Logic high is
stored as 0x00, 0x80, 0x00, 0x00. Logic low is stored as 0x00,
0x00, 0x00, 0x00. The value of the auxiliary ADC is not stored
in these registers. The value of these registers can only be one of
two values: 0x00 0x00 0x00 0x00 (digital zero) or 0x00 0x80 0x00
0x00 (digital one). More information about the multipurpose
pins can be found in the AN-951 Application Note, Using
MULTIPURPOSE PINS MODES AND SETTINGS
Multipurpose Pin Control Registers (Address 0xE204 to
Address 0xE20F)
Table 66. Addresses of Multipurpose Pin Control Registers
Address
Register
Decimal
Hex
57860
E204
Multipurpose pin control, MP0
57861
E205
Multipurpose pin control, MP1
57862
E206
Multipurpose pin control, MP2
57863
E207
Multipurpose pin control, MP3
57864
E208
Multipurpose pin control, MP4
57865
E209
Multipurpose pin control, MP5
57866
E20A
Multipurpose pin control, MP6
57867
E20B
Multipurpose pin control, MP7
57868
E20C
Multipurpose pin control, MP8
57869
E20D
Multipurpose pin control, MP9
57870
E20E
Multipurpose pin control, MP10
57871
E20F
Multipurpose pin control, MP11
Table 67. Bit Settings of Multipurpose Pin Control Registers
Bit
Position
Description
Default
[15:4]
Reserved
[3:0]
MP pin mode
0000
0000 = input without a debounce
0001 = input with a debounce of 0.3 ms
0010 = input with a debounce of 0.6 ms
0011 = input with a debounce of 0.9 ms
0100 = input with a debounce of 5 ms
0101 = input with a debounce of 10 ms
0110 = input with a debounce of 20 ms
0111 = input with a debounce of 40 ms
1000 = input driven by control port
1001 = output driven by control port
with pull-up
1010 = output driven by control port
without pull-up
1011 = output driven by core with pull-up
1100 = output driven by core without
pull-up
1101 = input auxiliary ADC (MP0 to
MP3 only)
1110 = output CRC error sticky
1111 = output watchdog error sticky
Multipurpose Pin Value Registers (Address 0x129A to
Address 0x12A5)
Table 68. Addresses of Multipurpose Pin Value Registers
Address
Register
Dec
Hex
4672
0x1240
Multipurpose pin value, MP0
4673
0x1241
Multipurpose pin value, MP1
4674
0x1242
Multipurpose pin value, MP2
4675
0x1243
Multipurpose pin value, MP3
4676
0x1244
Multipurpose pin value, MP4
4677
0x1245
Multipurpose pin value, MP5
4678
0x1246
Multipurpose pin value, MP6
4679
0x1247
Multipurpose pin value, MP7
4680
0x1248
Multipurpose pin value, MP8
4681
0x1249
Multipurpose pin value, MP9
4682
0x124A
Multipurpose pin value, MP10
4683
0x124B
Multipurpose pin value, MP11
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