LPC47M172_07 SMSC [SMSC Corporation], LPC47M172_07 Datasheet - Page 184

• Manufacturer Part Number: LPC47M172_07
• Description: Advanced I/O Controller with Motherboard GLUE Logic
• Manufacturer: SMSC [SMSC Corporation]

Advanced I/O Controller with Motherboard GLUE Logic
Datasheet
Notes:
Note 1:
Notes:
SMSC/Non-SMSC Register Sets (Rev. 01-11-07)
An Interrupt is activated by setting the Interrupt Request Level Select 0 register to a non-zero value AND :
-
-
-
-
-
-
IRQs are disabled if not used/selected by any Logical Device. Refer to Note A.
All IRQ’s are available in Serial IRQ mode.
A DMA channel is activated by setting the DMA Channel Select register to [0x01-0x03] AND :
- For the FDC logical device by setting DMAEN, bit D3 of the Digital Output Register.
For the FDC logical device by setting DMAEN, bit D3 of the Digital Output Register.
For the PP logical device by setting IRQE, bit D4 of the Control Port and in addition
For the PP logical device in ECP mode by clearing serviceIntr, bit D2 of the ecr.
For the Serial Port logical device by setting any combination of bits D0-D3 in the IER
and by setting the OUT2 bit in the UART's Modem Control (MCR) Register.
For the KYBD logical device (refer to the KYBD controller section of this spec).
The default value of the Primary Interrupt Select register for logical device 0 is 0x06.
Primary Interrupt
Select
Default=0x00 or
0x06 (Note 1)
on VCC POR,
VTR POR,
HARD RESET
and
SOFT RESET
DMA Channel
Select
Default=0x02 or
0x04 (Note 1)
on VCC POR,
VTR POR,
HARD RESET
and
SOFT RESET
NAME
NAME
Table 11.5 - Primary Interrupt Select Configuration Register Description
Table 11.6 - DMA Channel Select Configuration Register Description
REG INDEX
0x70 (R/W)
REG INDEX
0x74 (R/W)
DATASHEET
Bits[3:0] selects which interrupt is used for the primary
Interrupt.
Note:
Bits[2:0] select the DMA Channel.
0x00= no interrupt selected
0x01= IRQ1
0x02= IRQ2
0x03= IRQ3
0x04= IRQ4
0x05= IRQ5
0x06= IRQ6
0x07= IRQ7
0x08= IRQ8
0x09= IRQ9
0x0A= IRQ10
0x0B= IRQ11
0x0C= IRQ12
0x0D= IRQ13
0x0E= IRQ14
0x0F= IRQ15
Page 184
0x00= Reserved
0x01= DMA1
0x02= DMA2
0x03= DMA3
0x04-0x07= No DMA active
All interrupts are edge high (except ECP/EPP)
DEFINITION
DEFINITION
SMSC LPC47M172