FDC37M60X SMSC Corporation, FDC37M60X Datasheet - Page 140
FDC37M60X
Manufacturer Part Number
FDC37M60X
Description
ENHANCED SUPER I/O CONTROLLER WITH INFRARED SUPPORT
Manufacturer
SMSC Corporation
Datasheet
1.FDC37M60X.pdf
(182 pages)
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Note 1: To properly share and IRQ,
Note:
of the UART IRQ pins will assert when either UART generates an interrupt.
Serial Port 1
Mode Register
Default = 0x00
on Vcc POR or
Reset_Drv
Serial Port 2
Mode Register
Default = 0x00
on Vcc POR or
Reset_Drv
1. Configure UART1 (or UART2) to use the desired IRQ pin.
2. Configure UART2 (or UART1) to use No IRQ selected.
3. Set the share IRQ bit.
NAME
NAME
If both UARTs are configured to use different IRQ pins and the share IRQ bit is set, then both
Table 62 - Serial Port 2, Logical Device 5 [Logical Device Number = 0x05]
Table 61 - Serial Port 1, Logical Device 4 [Logical Device Number = 0x04]
REG INDEX
REG INDEX
0xF0 R/W
0xF0 R/W
UART Interrupt Operation Table
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.
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[7:2] Reserved, set to zero
140
DEFINITION
DEFINITION
STATE
STATE
C
C
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