TC1796
Peripheral Units (Vol. 2 of 2)
Micro Link Interface (MLI)
User’s Manual 23-27 V2.0, 2007-07
MLI, V2.0
• Bit field TPxBAR.ADDR (28 most significant base address bits) is loaded into bit field
TCBAR.ADDR.
• Status bit field TRSTATR.PN is updated with the pipe number x (for example x = 2
when TP2BAR has been written).
• Status flag TRSTATR.BAV (base address valid) becomes set.
• The transmission of a Copy Base Address Frame with the two buffered parameters
TCBAR.ADDR and TPxSTATR.BS is started for pipe x (if the corresponding pipe is
idle and TREADY = 1).
• Status flag TRSTATR.BAV (in the transmitting controller) is cleared after the Copy
Base Address Frame has been finished and correctly acknowledged by the MLI
receiver of the receiving controller.
• MLI event status flag TISR.NFSIx (Normal Frame Sent event in pipe x) is set and a
service request output is activated if enabled by TIER.NFSIEx = 1.
Note: After the transfer of a Copy Base Address Frame the optimized mode will be
suppressed automatically by hardware for the next two data frames. This ensures
a correct offset prediction afterwards.
Receiving Controller
When a Copy Base Address Frame for pipe x has been received correctly and
acknowledged, the following actions are executed in the MLI receiver.
• The received 28 most significant address bits are written into the receiver pipe x base
address register bit field RPxBAR.ADDR. This bit field determines the base address
of the pipe x Remote Window.
• The received 4-bit coded buffer size is stored in the receiver pipe x status register bit
field RPxSTATR.BS. This bit field determines the number of variable address bits for
the offset (determining the size) of the pipe x Remote Window.
• The information about the received frame type (= 00
B
for Copy Base Address Frame)
is written into the receiver control register bit field RCR.TF.
• MLI event status flag RISR.NFRI (Normal Frame Received event) is set and a service
request output is activated if enabled by RIER.NFRIE = 01
B
or 10
B
.
Figure 23-21 Copy Base Address Frame
MCA05879
x
P
Base Address (28-bit)0
024
BS
32 3631 31 35
0
x = Pipe Number
TCBAR.ADDR TPxSTATR.BSHeader
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