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belong to the same channel. If the
one of the
s, the address is also updated with the modifier values in the
TCB
register. Internal-to-internal memory and external-to-external
TCBx DY
memory transfers are not supported, although external memory to and
from external device transfers are supported.
External Port DMA Transfer Types
The
field in the
TY
perform. Each DMA channel has a transmitter and a receiver
where transmitters drive data and receivers get it.
External to Internal Memory
There are two ways to move data from external to internal memory:
• Program one of the four DMA channels to move a block from one
memory to the other. In this case, the transmitter and receiver
should be programmed.
The configurations for transmitter and receiver
described in Table 7-4 on page 7-52 and Table 7-5 on page 7-53
respectively.
• Use one of the two AutoDMA register channels. In this case, the
external device first programs the channel's
writes data to the target AutoDMA data register. Writing to this
address invokes the corresponding DMA channel.
The configuration for the receiver
Table 7-6 on page 7-54.
ADSP-TS101 TigerSHARC Processor
Hardware Reference
2DDMA
register specifies the type of DMA transfer to
TCBx DP
Direct Memory Access
bit in
register is set for
TCBx DP
s in this case are
TCB
registers and then
TCB
in this case is described in
TCB
register,
TCB
s
TCB
7-51
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