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CS7410 Datasheet(PDF) 35 Page - Cirrus Logic

Part # CS7410
Description  CD/MP3/WMA Audio Controller
PDF  39 Pages
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Manufacturer  CIRRUS [Cirrus Logic]
Direct Link  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS7410 Datasheet(HTML) 35 Page - Cirrus Logic

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CS7410
DS553PP1
35
4.9
General Purpose Input/Output (GPIO)
The CS7410 provides a number of General Purpose Input/Output (GPIO) pins, each with individual output
three-state controls, and a number of General Purpose Output (GPO) pins. Table 16 shows the 17 dedicat-
ed GPIO pins. A naming scheme for these pins was chosen to encourage system designers to adhere to
standardized pin usage. Table 17 shows the GPIO and GPO pins that can be redefined from other functions.
For redefined pins, mode control register bits select the normal function or GPIO/GPO function for the pins.
Table 17 also indicates which mode bit controls each pin.
Pin
Signal Name
Type
Description
100, 99, 98, 97
GPIO[3:0]
B
4 General purpose I/O on dedicated pins
53, 52, 51, 50, 49
KP_IN[4:0]
B
5 General purpose I/O on dedicated pins
58, 57, 56, 55, 54
KP_OUT[4:0]
B
5 General purpose I/O on dedicated pins
59
IR_IN
B
General purpose I/O on dedicated pin
62
SER4_CLK
B
General purpose I/O on dedicated pin
63
SER4_DAT
B
General purpose I/O on dedicated pin
Table 16. Dedicated General Purpose I/O Pins
Pin
Signal Name
Type
Description
65
SER2_CLK
B
GPIO controlled by Mode bit 2
67
SER2_DO
B
GPIO controlled by Mode bit 2
68
SER2_CS
B
GPIO controlled by Mode bit 2
66
SER2_DI
B
GPIO controlled by Mode bit 3
69
SER3_CLK
B
GPIO controlled by Mode bit 4
70
SER3_DO
B
GPIO controlled by Mode bit 4
72
SER3_DI
B
GPIO controlled by Mode bit 4
74
SER3_SS0
B
GPIO controlled by Mode bit 4
76
SER3_SS1
B
GPIO controlled by Mode bit 5
80
CD_C2P0
B
GPIO controlled by Mode bit 6
77
SERVOCK
B
GPIO controlled by Mode bit 7
92
PCM_BCK
O
GPO controlled by Mode bit 8
93
PCM_LRCK
O
GPO controlled by Mode bit 9
94
PCM_DO_0
O
GPO controlled by Mode bit 10
95
PCM_DO_1
O
GPO controlled by Mode bit 11
79
PCM_MUTE
O
GPO controlled by Mode bit 12
84
DAC_LP
O
GPO controlled by Mode bit 13
Table 17. Redefined General Purpose Pins



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