![C-Media CM6533 Скачать руководство пользователя страница 15](http://html.mh-extra.com/html/c-media/cm6533/cm6533_manual_478392015.webp)
CM6533,CM6533N,CM6533X1,CM6533DH
USB Audio Chip
Page
15
/
60
www.cmedia.com.tw
Rev.1.7
Copyright© C-Media Electronics Inc.
39
GPIO_3
DIO
General purpose input/output (default Rec Mute button).
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
38
GPIO_4
DIO
Programmable 2 in 1 I/O interface. GPIO / PWM select by firmware.
General purpose input/output (default PWM LED Blue).
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
37
GPIO_5
DIO
Programmable 2 in 1 I/O interface. GPIO / PWM select by firmware.
General purpose input/output (default PWM LED Green).
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
41
GPIO_6
DIO
Programmable 2 in 1 I/O interface. GPIO / PWM select by firmware.
General purpose input/output (default PWM LED Red).
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input. (JTAG-TRST)
40
GPIO_7
DIO
General purpose input/output
(JTAG-TDO).
3.3V I/O, 5V tolerance,
bidirectional buffer with 8mA
driving current, Default EQ disable
and weak pull-up for input.
There are 4 kinds of preset EQ, GPIO7
and 8 are used to determine in which
mode. The combinations are shown
below.
GPIO[8:7]=0,0: Normal mode
GPIO[8:7]=0,1: Gaming mode
GPIO[8:7]=1,0: Communication mode
GPIO[8:7]=1,1: Movie mode
EQ function can enable via configuration
tool or firmware.
35
GPIO_8
DIO
General purpose input/output
3.3V I/O, 5V tolerance,
bidirectional buffer with 8mA
driving current, Default EQ disable
and weak pull-up for input.
34
GPIO_9
DIO
General purpose input/output (default Rec Clip Indicator).
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
33
GPIO_10
DIO
Programmable 3 in 1 I/O interface. GPIO / Digital MIC Clock (DMIC_CLK) /
UART_RX select by firmware.
GPIO (Default MIC Jack Detect):
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
32
GPIO_11
DIO
Programmable 3 in 1 I/O interface. GPIO / Digital MIC Data (DMIC_DAT) /
UART_TX select by firmware.
GPIO (Default Headphone Jack Detect):
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
4-Wire SPI Serial Bus
43
SPI_MISO
DIO
SPI data master in/slave out,
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-down for input.
44
SPI_MOSI
DIO
SPI data master out/slave in,
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-down for input.
45
SPI_CS0
DIO
SPI chip select,
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.
46
SPI_SCK
DIO
SPI clock,
3.3V I/O, 5V tolerance, bidirectional buffer with 8mA driving current,
Default weak pull-down for input.
2-Wire Serial Bus (I2C)
5
I2C_SDAT
DIO
2-wire serial data,
3.3V I/O, 5V tolerant, bidirectional buffer with 8mA driving current,
Default weak pull-up for input.