FDC37B727-NS Standard Microsystems (SMSC), FDC37B727-NS Datasheet - Page 177
FDC37B727-NS
Manufacturer Part Number
FDC37B727-NS
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.FDC37B727-NS.pdf
(238 pages)
Specifications of FDC37B727-NS
Pin Count
128
Lead Free Status / RoHS Status
Compliant
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Serial Port 1, Logical Device 4
Note 1: To properly share and IRQ,
UART IRQ pins will assert when either UART generates an interrupt.
Note: If both UARTs are configured to use different IRQ pins and the share IRQ bit is set, then both of the
Serial Port 1
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
Table 70 - Serial Port 1, Logical Device 4 [Logical Device Number = 0x04]
REG INDEX
0xF0 R/W
Bit[0] MIDI Mode
= 0
= 1
Bit[1] High Speed
= 0
= 1
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.
178
MIDI support disabled (default)
MIDI support enabled
High Speed Disabled(default)
High Speed Enabled
DEFINITION
STATE
C
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