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AD1812 データシート(PDF) 10 Page - Analog Devices

部品番号 AD1812
部品情報  SoundPort Controller
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD1812 データシート(HTML) 10 Page - Analog Devices

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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.


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