cl-pd6833 Cirrus Logic, Inc., cl-pd6833 Datasheet - Page 173

• Manufacturer Part Number: cl-pd6833
• Description: Pci-to-cardbus Host Adapter
• Manufacturer: Cirrus Logic, Inc.

CL-PD6833
PCI-to-CardBus Host Adapter
13.3
This register is used to form part of the address for DMA transfers.
Bits 7:0 — Mid High Address
13.4
This register is used to form part of the address for DMA transfers. This register is only employed to
indicate the memory address of the DMA transfer when bit 3 of the DMA Slave Configuration is set to a
‘1’.
Bits 7:0 — High Address
June 1998
Register Name: Mid High Address
I/O Index: 2h
Register Name: High Address
I/O Index: 3h
Bit 7
Bit 7
This register corresponds to the Base and Current Address register of the Intel 8237 for write operations.
For read operations this register contains the Current Address.
Configuration register indicate that an 8-bit transfer is to occur, this register contains the starting
address bits 23:16. If bits 2:1 of the DMA Slave Configuration register indicate that a 16-bit
transfer is to occur, then this register contains low address bits 23:17, and bit 0 of this register is
not used.
This register corresponds to the Base and Current Address register of the Intel 8237 for write
operations. For read operations this register contains the current address. This register contains
the starting address bits 31:24. This register is enabled by bit 3 of the DMA Slave Configuration
register. If bit 3 of the DMA Slave Configuration is reset, then address bits 31:24 are ‘00’ during
DMA transfers from the CL-PD6833 to memory.
Mid High Address
High Address
ADVANCE DATA BOOK v0.3
Bit 6
Bit 6
Bit 5
Bit 5
Bit 4
Bit 4
Mid High Address
R/W:00000000
R/W:00000000
High Address
16 bit 23:17
16 bit 31:24
8 bit 23:16
8 bit 31:24
Bit 3
Bit 3
When bits 2:1 of the DMA Slave
Bit 2
Bit 2
DMA OPERATION REGISTERS
Register Compatibility Type: DMA
Register Compatibility Type: DMA
Bit 1
Bit 1
Register Per: socket
Register Per: socket
Bit 0
Bit 0
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