TC1796
Peripheral Units (Vol. 2 of 2)
Micro Link Interface (MLI)
User’s Manual 23-14 V2.0, 2007-07
MLI, V2.0
23.1.2.4 Optimized Write Frame
An Optimized Write Frame is used by the transmitting controller to send 8-bit, 16-bit, or
32-bit wide data to the receiving controller. This frame is initiated by a write operation to
one of the Transfer Windows in the transmitting controller. In contrast to a Write Offset
and Data Frame, no write offset is transmitted because the offset address for the write
data can be predicted and calculated by the receiving controller. An Optimized Write
Frame allows a higher data bandwidth than Write Offset and Data Frames, because they
are shorter. An optimized frame is only possible if the predicted address matches with
the actually written one.
The Optimized Write Frame contains the following parts:
• Header:
The header starts with frame code FC = 11
B
followed by the pipe number PN of the
Transfer Window that has been the target of the write operation.
• Write data field:
The write data field can be 8-bit, 16-bit, or 32-bit wide, depending on the data width
of the write access to the Transfer Window.
• Parity bit P
Figure 23-11 Optimized Write Frame
More details on the Optimized Write Frame handling of the MLI module are described on
Page 23-28.
MCA05884_mod
PN P8- Bit Data11
PN
P
16-Bit Data11
PN
P
32-Bit Data11
Header
Header
Header
024 123111
024 203119
024 363135
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