参数资料
型号: ADAU1445YSVZ-3A-RL
厂商: Analog Devices Inc
文件页数: 64/92页
文件大小: 0K
描述: IC SIGMADSP 175MHZ 100TQFP
标准包装: 1,000
系列: SigmaDSP®
类型: 音频处理器
应用: 车载音频
安装类型: 表面贴装
封装/外壳: 100-TQFP 裸露焊盘
供应商设备封装: 100-TQFP-EP(14x14)
包装: 带卷 (TR)
ADAU1445/ADAU1446
Rev. A | Page 67 of 92
MULTIPURPOSE PINS
The ADAU1445/ADAU1446 each include 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 μs and 40 μs.
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 64.
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.
MULTIPURPOSE PINS MODES AND SETTINGS
Multipurpose Pin Control Registers (Address 0xE204 to
Address 0xE20F)
Table 64. 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 65. 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
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