MC68360RC25K Freescale Semiconductor, MC68360RC25K Datasheet - Page 621
MC68360RC25K
Manufacturer Part Number
MC68360RC25K
Description
IC MPU QUICC 25MHZ 241-PGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360RC25K
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
241-PGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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Serial Management Controllers (SMCs)
safely disable and reenable the SMC (simply clearing TEN and setting TEN may not be suf-
ficient).
7.11.10.8 SMC TRANSPARENT COMMAND SET. The following transmit and receive
commands are issued to the CR.
7.11.10.8.1 Transmit Commands. The following paragraphs describe the transparent
transmit commands.
STOP TRANSMIT Command . After a hardware or software reset and the enabling of the
channel in the SMC mode register, the channel is in the transmit enable mode and starts
polling the first BD in the table.
The STOP TRANSMIT command disables the transmission of frames on the transmit chan-
nel. If this command is received by the transparent controller during frame transmission,
transmission of that buffer is aborted after the contents of the FIFO are transmitted (up to 2
characters). The TBPTR is not advanced to the next BD, no new BD is accessed, and no
new buffers are transmitted for this channel. The transmitter will send idles until the
RESTART TRANSMIT command is given.
RESTART TRANSMIT Command. The RESTART TRANSMIT command is used to begin
or resume transmission from the current TBPTR in the channel’s Tx BD table. When this
command is received by the channel, it will start polling the R-bit in this BD. This command
is expected by the SMC after a STOP TRANSMIT command and the disabling of the chan-
nel in its mode register, or after a transmitter error (underrun) occurs.
INIT TX PARAMETERS Command. This command initializes all the transmit parameters in
this serial channel’s parameter RAM to their reset state. This command should only be
issued when the transmitter is disabled. Note that the INIT TX AND RX PARAMETERS com-
mand may also be used to reset both transmit and receive parameters.
7.11.10.8.2 Receive Commands. The following paragraphs describe the transparent
receive commands.
ENTER HUNT MODE Command. This command forces the SMC to close the current
receive BD if it is currently being used, and to use the next BD in the list for any subsequent
data that is received. If the SMC is not in the process of receiving data, the buffer is not
closed. Additionally, this command causes the receiver to wait for a re-synchronization,
before further reception continues.
CLOSE Rx BD Command . The CLOSE Rx BD command is used to force the SMC to close
the current receive BD if it is currently being used, and to use the next BD in the list for any
subsequent data that is received. If the SMC is not in the process of receiving data, no action
is taken by this command.
INIT RX PARAMETERS Command . Initializes all the receive parameters in this serial chan-
nel’s parameter RAM to their reset state. This command should only be issued when the
receiver is disabled. Note that the INIT TX AND RX PARAMETERS command may also be
used to reset both receive and transmit parameters.
MC68360 USER’S MANUAL
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