LPC47M192-NW Standard Microsystems (SMSC), LPC47M192-NW Datasheet - Page 180

• Manufacturer Part Number: LPC47M192-NW
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M192-NW

• Lead Free Status / RoHS Status: Compliant

Note 1 : To properly share and IRQ,
Note : If both UARTs are configured to use different IRQs and the share IRQ bit is set, then both of the UART IRQs
will assert when either UART generates an interrupt.
SMSC DS – LPC47M192
Serial Port 1
Mode Register
Default = 0x00
on VCC POR,
VTR POR and
PCI RESET
1. Configure UART1 (or UART2) to use the desired IRQ.
2. Configure UART2 (or UART1) to use No IRQ selected.
3. Set the share IRQ bit.
Table 72 - Serial Port 1, Logical Device 4 [Logical Device Number = 0x04]
NAME
REG INDEX
0xF0 R/W
DATASHEET
Bit[0] MIDI Mode
= 0 MIDI support disabled (default)
= 1 MIDI support enabled
Bit[1] High Speed
= 0 High Speed Disabled(default)
= 1 High Speed Enabled
Bit[6:2] Reserved, set to zero
Bit[7]: Share IRQ
=0 UARTS use different IRQs
=1 UARTS share a common IRQ
See Note 1 below.
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DEFINITION
Rev. 03/30/05