LPC47M192-NW Standard Microsystems (SMSC), LPC47M192-NW Datasheet - Page 80
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LPC47M192-NW
Manufacturer Part Number
LPC47M192-NW
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.LPC47M192-NW.pdf
(228 pages)
Specifications of LPC47M192-NW
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The MPU-401 Interrupt output is active ‘1’ when the MIDI Receive Buffer Empty bit is ‘0’. The MPU-401 Interrupt
output is inactive ‘0’ when the MIDI Receive Buffer Empty bit is ‘1’. See Section “Interrupt” for more information.
7.7.4.2
Bit 6 MIDI Transmit Busy indicates the send (write) state of the MIDI Data port and Command port (Table 37)
There are no interrupts associated with MIDI transmit (write) data.
Bits[5:0]
RESERVED (Reserved bits cannot be written and return ‘0’ when read).
Command Port
The Command port is used to transfer MPU-401 commands to the Command Controller. The Command port is write-
only (Table 38). See Section “MPU-401 Command controller” below.
SMSC DS – LPC47M192
NAME
TYPE
Bit 6 – MIDI Transmit Busy
D7
W
STATUS PORT
STATUS PORT
D6
W
Table 36 – MIDI RECEIVE BUFFER EMPTY STATUS BIT
D7
D6
0
1
0
1
Table 37 - MIDI TRANSMIT BUSY STATUS BIT
D5
W
MPU-401 I/O BASE ADDRESS+1
Table 38 - MPU-401 COMMAND PORT
MIDI Read/Command Acknowledge data is
available to the host.
MIDI Read/Command Acknowledge data is
NOT available to the host.
The MPU-401 interface is ready to accept a
data/command byte from the host.
The MPU-401 interface is NOT ready to
accept a data/command byte from the host.
DATASHEET
COMMAND REGISTER
D4
W
Page 80
DESCRIPTION
DESCRIPTION
D3
W
D2
W
D1
W
D0
W
DEFAULT
Rev. 03/30/05
n/a
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