W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 177

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

13.3.10 ECR (Extended Control Register) Mode = all
This register controls the extended ECP parallel port functions. The bit definitions are follows:
DEFAULT
BIT
2-0
NAME
BIT
7-5
7
6
5
4
3
BIT
COMPRESS. This bit is read-only. It is logical 0 during a read, which means that this chip
does not support hardware RLE compression.
INTRVALUE. Returns the value on the ISA IRQ line to determine possible conflicts.
IRQX2.
IRQX1.
IRQX0.
RESERVED. These bits are logical 1 during a read and can be written.
MODE. Read/Write. These bits select the mode.
Bits
7 6 5
0 0 0: Standard Parallel Port (SPP) mode. The FIFO is reset in this mode.
0 0 1: PS/2 Parallel Port mode. In addition to the functions of the SPP mode, this mode
0 1 0: Parallel Port FIFO mode. This is the same as the SPP mode except that bytes are
0 1 1: ECP Parallel Port Mode. When the direction is 0 (forward direction), bytes placed
1 0 0: EPP Mode. The EPP mode is activated if the EPP mode is selected.
1 0 1: Reserved.
7
0
has an extra trait: Direction is able to tri-state the data lines. Furthermore, reading
the data register returns the value on the data lines, not the value in the data
register.
written or DMAed to the FIFO. FIFO data are automatically transmitted using the
standard parallel port protocol. This mode functions only when the direction is 0.
into the ecpDFifo and bytes written to the ecpAFifo are placed in a single FIFO and
automatically transmitted to the peripheral using the ECP Protocol. When the
direction is 1 (reverse direction), bytes are moved from the ECP parallel port and
packed into bytes in the ecpDFifo.
Reflects the IRQ resource assigned for the ECP port.
MODE
cnfgB[5:3]
000
001
010
011
100
101
110
111
6
0
5
0
W83627DHG-P/W83627DHG-PT
nERRINTREN
IRQ Resource
Reflects other IRQ resources selected by
PnP register (Default)
IRQ7
IRQ9
IRQ10
IRQ11
IRQ14
IRQ15
IRQ5
DESCRIPTION
DESCRIPTION
-167-
4
1
DMAEN
3
0
Publication Release Date: July 09, 2009
SERVICE
INTR
2
1
FULL
1
0
Version 1.94
EMPTY
0
1