SMC Networks 1232 Series user manual J8 for AC97 Audio port Section

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Note. USB devices shouldn’t be directly connected to the J4 connector. Parvus USB/Audio CODEC Adapter can be used. In fact it provides for two USB standard connectors (but only USB1 is useful for this CPU) and furthermore it provides for a better ESD (Electric Static Discharge) and Over Current protection. Before using a different adapter please refer to the Parvus Customer Support Service

J8 for AC97 Audio port Section

J8 is a double row 9 x 2 pin with 2.00-mm step connector.

AC97 Audio

Figure 14. J8 Connector layout

The SpacePC 1232 module provides one AC97 (Specification Revision 1.3, 2.0, and 2.1) audio interface adding audio capabilities to the PC/104 system. The Parvus Audio CODEC Adapter (but also any AC97 CODEC which supports an independent input and output sample rate conversion interface can be used) provides an AC97 and a CODEC for the SpacePC 1232 and should be connected between the audio device and the J8 connector via a flat ribbon cable.

		Table 12. J8 pinout connectors
Pin	Signal	Function
1	5V	Power supply
2	5V	Power supply
3	SDATA_OUT	Serial DATA Out
		This output transmit audio serial data to the codec
4	GPIO0	General Purpose I/O
5	GND	Ground Signal
6	GPIO1	General Purpose I/O
7	PC_BEEP	Legacy PC/AT speaker output
8	GND	Ground Signal
9	RESETDRV	Audio Bit Clock
10	BIT_CLK
		The serial bit clock from the codec
11	GND	Ground Signal
12	GND	Ground Signal
13	GND	Ground Signal
	SYNC	Serial Bus Synchronization
14		This bit is asserted to synchronize the transfer of data between the
		module and the AC97 codec

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