LSI Logic Confidential
15-54
Serial I/O Port
Copyright © 2001, 2002 by LSI Logic Corporation. All rights reserved.
The default value is 5.
Filt_L
IR RX Start Pulse Filter Lower Limit
19:16
This 4-bit value is matched against the upper 4 bits of the
8-bit tick count value to determine when a start pulse is
too small, and therefore is not considered valid. This
value has no effect if the Filter Start Pulse bit in the IR
Receive Tick Count register is set to zero.
The default value is 3.
IR1 Receive Pulse High Tick Count Register (IR1_RPH)
Offset = 0xBF001C
Read/Write
Default = 0x0000 0000
RHTC
Receive Pulse High Tick Count
23:16
This register contains the high pulse width for the previ-
ously received input pulse. This register is loaded after
each deassertion of the SIO_IRRX input. Note that the
default value of each tick is 7032 cycles. The tick period
can be modified by programming the Receive Tick Period
register.
IR1 DMA Transmit Control Register (IR_TX_CONTROL_REG_ADDR)
IR2 DMA Transmit Control Register (IR2_TX_CONTROL_REG_ADDR)
Offset = 0xBF0040 / 0xBF00C0
Read/Write
Default = 0x0000 0000
31
24
23
16
RSVD
RHTC
15
0
RSVD
31
16
RSVD
15
4
3
2
1
0
RSVD
GO
MODE
FLUS
CHEN
Содержание DMN-8600
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