CY82C693UB Cypress Semiconductor Corporation., CY82C693UB Datasheet - Page 82

• Manufacturer Part Number: CY82C693UB
• Description: Hypercache Tm / Stand-alone Pci Peripheral Controller With Usb
• Manufacturer: Cypress Semiconductor Corporation.

DMA Register 26: DMAC2 DMA Command/Mask Register (Write Only) - I/O Address=0D4H
DMA Request Mask Register Write Single Bit Format (This Register is used to mask DMA requests through software.
Single-bit Software request masks can be generated with separate writes to this register or all channels can be masked using
DMA Register 15.)
DMA Register 27: DMAC2 DMA Mode Register (Write Only) - I/O Address=0D6H
I/O Read I/O Write Flip-Flop State Function
Bit
7:3
2
1:0
I/O Read I/O Write Flip-Flop State Function
0
1
0
1
1
0
1
0
Function
Reserved
DMA Request Mask Generation Control:
0:
1:
DMA Request Mask Channel Selector:
00:
01:
10:
11:
X
X
Clear the mask on the channel specified by bits[1:0]
Force a DMA Request on the channel specified by bits[1:0].
Channel 4
Channel 5
Channel 6
Channel 7
X
X
Undefined
Write single-bit in DMA Request Mask Register (leaving the rest unchanged)
Undefined
Write Mode Register
PRELIMINARY
82
CY82C693UB
Default
00000
0
00