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LPC47M14X датащи(PDF) 166 Page - SMSC Corporation

номер детали LPC47M14X
подробное описание детали  128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
PDF  205 Pages
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производитель  SMSC [SMSC Corporation]
домашняя страница  http://www.smsc.com
Logo SMSC - SMSC Corporation

LPC47M14X датащи(HTML) 166 Page - SMSC Corporation

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SMSC DS – LPC47M14X
Page 166
Rev. 03/19/2001
Table 70 – Serial Port 1, Logical Device 4 [Logical Device Number = 0x04]
NAME
REG INDEX
DEFINITION
STATE
Serial Port 1
Mode Register
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
0xF0 R/W
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.
C
Note 1: To properly share and IRQ,
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.
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.
UART Interrupt Operation Table
Table 71 – Serial Port 2, Logical Device 5 [Logical Device Number = 0x05]
NAME
REG INDEX
DEFINITION
STATE
Serial Port 2
Mode Register
Default = 0x00
on VCC POR,
VTR POR and
HARD RESET
0xF0 R/W
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[4:2] Reserved, set to zero
Bit[5] TXD2_MODE (Note 1)
=0
The inactive state of the TXD2 pin is low.
=1
The inactive state of the TXD2 pin is tristate.
Bits[7:6] Reserved. Set to zero.
C



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