CD2481 Datasheet, PDF (190/222 Pages) Intel Corporation – Programmable Four-Channel Communications Controller

CD2481 — Programmable Four-Channel Communications Controller
9.6.5.3
B Transmit Buffer Address 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 12
Bit 11
Bit 10
Binary Address Value, 32-bit Address, bits 15 - 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Binary Address Value, 32-bit Address, bits 7 - 0
Intel Hex Address: x’54
Motorola Hex Address: x’56
Bit 9
Bit 8
Bit 1
Bit 0
9.6.5.4
B Transmit Buffer Address 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 12
Bit 11
Bit 10
Binary Address Value, 32-bit Address, bits 23 - 16
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Binary Address Value, 32-bit Address, bits 31 - 24
Intel Hex Address: x’56
Motorola Hex Address: x’54
Bit 9
Bit 8
Bit 1
Bit 0
These registers contain the start addresses of two external buffers that are used by the CD2481 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 CD2481 FIFO.
190
Datasheet