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CS5530A датащи(PDF) 34 Page - National Semiconductor (TI) |
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CS5530A датащи(HTML) 34 Page - National Semiconductor (TI) |
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34 / 259 page ![]() www.national.com 34 Revision 1.1 Signal Definitions (Continued) GPIO1/ SDATA_IN2 AE24 I/O General Purpose I/O 1 or Serial Data Input 2 This pin can function either as a general purpose I/O or as a second serial data input pin if two codecs are used in the system. In order for this pin to function as SDATA_IN2, it must first be configured as an input (F0 Index 90h[1] = 0). Then setting F3BAR+Memory Offset 08h[21] = 1 selects the pin to function as SDATA_IN2. Refer to GPIO[3:2] signal description for GPIO function description. GPIO0 AC22 I/O General Purpose I/O 0 Refer to GPIO[3:2] signal description for GPIO function description. 2.2.10 Audio Interface Signal Name Pin No. Pin Type Description BIT_CLK V2 I Audio Bit Clock The serial bit clock from the codec. SDATA_OUT V1 O Serial Data I/O This output transmits audio serial data to the codec. SDATA_IN U4 I Serial Data Input This input receives serial data from the codec. SYNC U3 O Serial Bus Synchronization This bit is asserted to synchronize the transfer of data between the CS5530A and the AC97 codec. PC_BEEP V3 O PC Beep Legacy PC/AT speaker output. 2.2.9 Game Port and General Purpose I/O Interface (Continued) Signal Name Pin No. Pin Type Description |
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