DMA Controller
8-6
Am186™CC/CH/CU Microcontrollers User’s Manual
SmartDMA Channel Pair 0 and 1 Registers
140h
SD0CON
SmartDMA0 Control
Sets up SmartDMA Channel 0.
142h
SD0TRCAL
SmartDMA0 Transmit Ring Count /
Address Low
Indicates the number of available buffer
descriptors per transmit ring in SmartDMA
Channel 0.
Also contains the low address bits [15–4] of the
transmit buffer descriptor ring address for
SmartDMA Channel 0.
144h
SD0TRAH
SmartDMA0 Transmit Ring Address
High
Points to the transmit buffer descriptor ring high
address bits [19–16] for SmartDMA Channel 0.
146h
SD0RRCAL
SmartDMA0 Receive Ring Count /
Address Low
Indicates the number of available buffer
descriptors per receive ring in SmartDMA
Channel 0.
Also contains the low address bits [15–4] of the
receive buffer descriptor ring address for
SmartDMA Channel 0.
148h
SD0RRAH
SmartDMA0 Receive Ring Address
High
Points to the receive buffer descriptor ring high
address bits [19–16] for SmartDMA Channel 0.
14Ah
SD0STAT
SmartDMA0 Status
Indicates the status of SmartDMA Channel 0.
14Ch
SD0CBD
SmartDMA0 Current Buffer Descriptor
Indicates the buffer descriptor currently
accessed by SmartDMA Channel 0.
14Eh
SD0CTAD
SmartDMA0 Current Transmit Address
Indicates the current address of the data being
transmitted by SmartDMA Channel 0.
150h
SD0CRAD
SmartDMA0 Current Receive Address
Indicates the current address of the data being
received by a SmartDMA channel.
158h
SD1CON
SmartDMA1 Control
Behaves the same as SmartDMA Channel 0
registers, but for SmartDMA Channel 1.
15Ah
SD1TRCAL
SmartDMA1 Transmit Ring Count /
Address Low
15Ch
SD1TRAH
SmartDMA1 Transmit Ring Address
High
15Eh
SD1RRCAL
SmartDMA1 Receive Ring Count /
Address Low
160h
SD1RRAH
SmartDMA1 Receive Ring Address
High
162h
SD1STAT
SmartDMA1 Status
164h
SD1CBD
SmartDMA1 Current Buffer Descriptor
166h
SD1CTAD
SmartDMA1 Current Transmit Address
168h
SD1CRAD
SmartDMA1 Current Receive Address
Table 8-2
DMA Controller Register Summary (Continued)
Offset
Register
Mnemonic
Register Name
Description
CC
CH
Summary of Contents for Am186 CC
Page 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Page 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Page 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Page 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Page 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Page 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Page 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Page 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Page 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...