MC68360EM25VL Freescale Semiconductor, MC68360EM25VL Datasheet - Page 672

• Manufacturer Part Number: MC68360EM25VL
• Description: IC MPU QUICC 25MHZ 240-FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68360EM25VL

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Parallel Interface Port (PIP)
7.13.8.9.3 INIT TX PARAMETERS Command. Initializes all the transmit parameters in this
Centronics channel’s parameter RAM to their reset state. This command should only be
issued when the transmitter is disabled.
7.13.8.10 TRANSMISSION ERRORS.
7.13.8.10.1 Buffer Descriptor Not Ready. This error occurs if the centronics transmitter is
active (STR bit in the PIP mode register was asserted by the host) and the current BD that
should be processed by the Centronics controller is not ready (R bit in the BD = 0). When
this condition occurs, the TXE (transmit error) interrupt will be set. The channel will resume
transmission after the s/w prepares the BD and asserts the STR bit.
7.13.8.10.2 Printer Off-Line Error . This error occurs if the printer is off-line (Select line is
negated) and if the printer status check option is enabled. The S bit will be set in the BD and
TX Error (TXE) interrupt will be set. The channel will resume transmission after Restart
Transmit command.
7.13.8.10.3 Printer Fault. This error occurs if the printer has a Fault condition (Fault* line
asserted) and if the printer status check option is enabled. The F bit will be set in the BD and
TX Error (TXE) interrupt will be set. The channel will resume transmission after Restart
Transmit command.
7.13.8.10.4 Paper Error. This error occurs if the printer has an error in its paper path (PEr-
ror line asserted) and if the printer status check option is enabled. The PE bit will be set in
the BD and TX Error (TXE) interrupt will be set. The channel will resume transmission after
Restart Transmit command
7.13.8.10.5 Centronics Transmitter Buffer Descriptor. The CP confirms transmission (or
indicates error conditions) via the buffer descriptors to inform the processor that the buffers
have been serviced.
R—Ready
7-348
OFFSET + 0
OFFSET + 2
OFFSET + 4
OFFSET + 6
0 = The data buffer associated with this BD is not currently ready for transmission. The
1 = The data buffer, which has been prepared for transmission by the user, has not
user is free to manipulate this BD or its associated data buffer. The CP clears this
bit after the buffer has been transmitted or after an error condition is encountered.
been transmitted or is currently being transmitted. No fields of this BD may be writ-
ten by the user once this bit is set.
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R
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Freescale Semiconductor, Inc.
For More Information On This Product,
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MC68360 USER’S MANUAL
Go to: www.freescale.com
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CM
TX DATA BUFFER POINTER
9
DATA LENGTH
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8
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7
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6
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5
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4
F
3
PE
2
S
1
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0