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AD1812 データシート(PDF) 10 Page - Analog Devices |
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AD1812 データシート(HTML) 10 Page - Analog Devices |
10 / 20 page AD1812 REV. 0 –10– PIN DESCRIPTION Parallel Interface Pin Name P/TQFP I/O Description PC_D[15:0] 128–131, 136–139, I/O ISA Bus PC Data. PC_D15 to PC_D8 in conjunction with an active HI 142–145, 150–153 SBHE connects the AD1812 to the high byte data on the bus, while PC_D7 to PC_D0 connects to the low byte data on the bus. IRQ(x) 108–115 O Interrupt Request. IRQ (3, 4, 5, 7, 9, 10, 11, 12). Active HI signals indicating a pending interrupt. DRQ(x) 98–103 O DMA Request. DRQ (0, 1, 3, 5, 6, 7). Active HI signals indicating a request for DMA bus operation. DRQ0, DRQ1 and DRQ3 request 8-bit DMA operations while DRQ5, DRQ6 and DRQ7 request 16-bit operations. PC_A[15:0] 8–15, 18–25 I ISA Bus PC Address. Connects the AD1812 to the ISA bus address lines. AEN 32 I Address Enable. Active HI signal indicates DMA transfer. Active LO signal indicates PIO transfer. DACK (x) 84–85, 87–90 I DMA Acknowledge. DACK (0, 1, 3, 5, 6, 7). Active LO signal indicating that a DMA operation can begin. IOR 26 I I/O Read indicates a read operation. IOW 33 I I/O Write indicates a write operation. SBHE 7 I System Byte High Enable. Active LO signal that indicates a byte is being trans- ferred on the upper byte of the 16-bit bus. IOCH16 97 O IO Channel 16. Active LO signal indicating that one of the logical devices inside the AD1812 is decoded as a 16-bit device. RESET 35 I Reset. Active HI. RESET 119 I Inverted Reset. Active LO. Analog Signals Pin Name P/TQFP I/O Description L_LINE 56 I Left Line-Level Input. R_LINE 55 I Right Line-Level Input. L_MIC 58 I Left Microphone Input. R_MIC 57 I Right Microphone Input. L_AUX1 64 I Left Auxiliary #1 Line-Level Input. Also used for CD input. R_AUX1 63 I Right Auxiliary #1 Line-Level Input. Also used for CD input. L_AUX2 66 I Left Auxiliary #2 Line-Level Input. Also used for a wavetable input. R_AUX2 65 I Right Auxiliary #2 Line-Level Input. Also used for a wavetable input. L_OUT 69 O Left Line-Level Output. Left channel post-mixed output. R_OUT 68 O Right Line-Level Output. Right channel post-mixed output. MONO_IN 71 I Mono Input. M_OUT 73 O Mono Output. Sum of L_OUT and R_OUT. L_DACOUT 78 O Left DAC Out. Left channel games audio output. R_DACOUT 75 O Right DAC Out. Right channel games audio output. L_DACIN 77 I Left DAC In. When coupled to L_DACOUT, allows mixing of left channel games audio with left channel audio converted by the codec. The post-mixed output is avail- able on L_OUT. R_DACIN 76 I Right DAC In. When coupled to R_DACOUT, allows mixing of right channel games audio with right channel audio converted by the codec. The post-mixed output is available on R_OUT. L_MONOIN 70 I Left Mono In. When coupled to L_OUT, M_OUT reflects the left post-mixed output. R_MONOIN 67 I Right Mono In. When coupled to R_OUT, M_OUT reflects the right post-mixed output. |
同様の部品番号 - AD1812 |
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同様の説明 - AD1812 |
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