LPC47M172_07 SMSC [SMSC Corporation], LPC47M172_07 Datasheet - Page 103
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LPC47M172_07
Manufacturer Part Number
LPC47M172_07
Description
Advanced I/O Controller with Motherboard GLUE Logic
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LPC47M172_07.pdf
(226 pages)
- Current page: 103 of 226
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7.12.7 cnfgA (Configuration Register A)
7.12.8 cnfgB (Configuration Register B)
BIT 7 compress
BIT 6 intrValue
BIT [5:3] Parallel Port IRQ (read-only)
BITS [2:0] Parallel Port DMA (read-only)
7.12.9 ecr (Extended Control Register)
BITS 7,6,5
SMSC LPC47M172
The readIntrThreshold can be determined by setting the direction bit to 1 and filling the empty tFIFO a byte
at a time until serviceIntr is set. This may generate a spurious interrupt, but will indicate that the threshold
has been reached.
Data bytes are always read from the head of tFIFO regardless of the value of the direction bit. For example
if 44h, 33h, 22h is written to the FIFO, then reading the tFIFO will return 44h, 33h, 22h in the same order
as was written.
ADDRESS OFFSET = 400H
Mode = 111
This register is a read only register. When read, 10H is returned. This indicates to the system that this is an
8-bit implementation. (PWord = 1 byte)
ADDRESS OFFSET = 401H
Mode = 111
This bit is read only. During a read it is a low level. This means that this chip does not support hardware
RLE compression. It does support hardware de-compression.
Returns the value of the interrupt to determine possible conflicts.
to Table 7.7 - Programming for Configuration Register B (Bits 5:3)
to Table 7.8 - Programming for Configuration Register B (Bits 2:0)
ADDRESS OFFSET = 402H
Mode = all
This register controls the extended ECP parallel port functions.
These bits are Read/Write and select the Mode.
DATASHEET
Page 103
Advanced I/O Controller with Motherboard GLUE Logic
SMSC/Non-SMSC Register Sets (Rev. 01-11-07)
Datasheet
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