MC68360ZP25L Freescale Semiconductor, MC68360ZP25L Datasheet - Page 575
MC68360ZP25L
Manufacturer Part Number
MC68360ZP25L
Description
IC MPU QUICC 25MHZ 357-PBGA
Manufacturer
Freescale Semiconductor
Datasheets
1.MC68EN360VR25L.pdf
(14 pages)
2.MC68EN360VR25L.pdf
(2 pages)
3.MC68360AI25L.pdf
(962 pages)
Specifications of MC68360ZP25L
Processor Type
M683xx 32-Bit
Speed
25MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
357-PBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Features
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RESTART TRANSMIT Command . The RESTART TRANSMIT command enables the trans-
mission of characters on the transmit channel. This command is expected by the Ethernet
controller after a GRACEFUL STOP TRANSMIT command or after a transmitter error
(underrun, retransmission limit reached, or late collision). The Ethernet controller will
resume transmission from the current TBPTR in the channel’s Tx BD table.
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.
7.10.23.10.2 Receive Commands. The following paragraphs describe the Ethernet receive
commands.
ENTER HUNT MODE Command . After a hardware or software reset and the enabling of the
channel in the SCC mode register, the channel is in the receive enable mode and will use
the first BD in the table.
The ENTER HUNT MODE command is generally used to force the Ethernet receiver to
abort reception of the current frame and enter the hunt mode. In the hunt mode, the Ethernet
controller continually scans the input data stream for a transition of carrier sense from inac-
tive to active and then a preamble sequence followed by the start frame delimiter. After
receiving the command, the current receive buffer is closed, and the CRC calculation is
reset. Further frame reception will use the next Rx BD.
CLOSE Rx BD Command . This command should not be used with the Ethernet controller.
INIT RX PARAMETERS Command . This command initializes all the receive parameters in
this serial channel’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 com-
mand may also be used to reset both receive and transmit parameters.
7.10.23.10.3 SET GROUP ADDRESS Command. The SET GROUP ADDRESS com-
mand is used to set a bit in one of the 64 bits of the four individual/group address hash filter
registers (GADDR1–4 or IADDR1–4). The individual or group address (48 bits) to be added
to the hash table should be written to TADDR_L, TADDR_M, and TADDR_H in the param-
eter RAM prior to executing this command. The RISC controller checks the I/G bit in the
address stored in TADDR to determine whether to use the individual hash table or the group
hash table. A zero in the I/G bit implies an individual address, and a one in the I/G bit implies
a group address.
If the GRACEFUL STOP TRANSMIT command is issued and
the current transmit frame ends in a collision, the TBPTR will
point to the beginning of the collided frame, with the R-bit still set
in the Tx BD (i.e., the frame will look as if it were never transmit-
ted).
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
NOTE
Serial Communication Controllers (SCCs)
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