CD2231

Manufacturer Part NumberCD2231
DescriptionCD2231 Intelligent Two-channel Lan And Wan Communications Controller
ManufacturerIntel Corporation
CD2231 datasheet
 
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CD2231 — Intelligent Two-Channel LAN and WAN Communications Controller
8.6.5.2
A Transmit Buffer Address Register — Upper (ATBADRU)
Register Name: ATBADRU
Register Description: Transmit Buffer ‘A’ 32-bit Address, upper word
Default Value: x’0000
Access: Word Read/Write
Bit 15
Bit 14
Bit 13
Bit 7
Bit 6
Bit 5
8.6.5.3
B Transmit Buffer Address Register — Lower (BTBADRL)
Register Name: BTBADRL
Register Description: Transmit Buffer ‘B’ 32-bit Address, lower word
Default Value: x’0000
Access: Word Read/Write
Bit 15
Bit 14
Bit 13
Bit 7
Bit 6
Bit 5
8.6.5.4
B Transmit Buffer Address Register — Upper (BTBADRU)
Register Name: BTBADRU
Register Description: Transmit Buffer ‘B’ 32-bit Address, upper word
Default Value: x’0000
Access: Word Read/Write
Bit 15
Bit 14
Bit 13
Bit 7
Bit 6
Bit 5
These registers contain the start addresses of two external buffers that are used by the CD2231 to
transmit the next data blocks. They are written to by the host and copied internally to control the
data transfer from the memory to the CD2231 FIFO.
146
Bit 12
Bit 11
Binary address value, 32-bit address, bits 23:16
Bit 4
Bit 3
Binary address value, 32-bit address, bits 31:24
Bit 12
Bit 11
Binary address value, 32-bit address, bits 15:8
Bit 4
Bit 3
Binary address value, 32-bit address, bits 7:0
Bit 12
Bit 11
Binary address value, 32-bit address, bits 23:16
Bit 4
Bit 3
Binary address value, 32-bit address, bits 31:24
Intel Hex Address: x’52
Motorola Hex Address: x’50
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Intel Hex Address: x’54
Motorola Hex Address: x’56
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Intel Hex Address: x’56
Motorola Hex Address: x’54
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Datasheet