FDC37M60X SMSC Corporation, FDC37M60X Datasheet - Page 135
FDC37M60X
Manufacturer Part Number
FDC37M60X
Description
ENHANCED SUPER I/O CONTROLLER WITH INFRARED SUPPORT
Manufacturer
SMSC Corporation
Datasheet
1.FDC37M60X.pdf
(182 pages)
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Note:
Note:
DMA Channel
Select
Default = 0x04
on Vcc POR or
Reset_Drv
NAME
A DMA channel is activated by setting the DMA Channel Select register to [0x01-0x03] AND :
for the FDC logical device by setting DMAEN, bit D3 of the Digital Output Register.
for the PP logical device in ECP mode by setting dmaEn, bit D3 of the ecr.
DMAREQ pins must tri-state if not used/selected by any Logical Device. Refer to Note A.
Table 58 - DMA Channel Select Configuration Register Description
REG INDEX
0x74 (R/W)
Bits[2:0] select the DMA Channel.
0x00= Reserved
0x01= DMA1
0x02= DMA2
0x03= DMA3
0x04-0x07= No DMA active
135
DEFINITION
STATE
C
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