PC87393VJG National Semiconductor, PC87393VJG Datasheet - Page 104

• Manufacturer Part Number: PC87393VJG
• Description: IC, SUPER I/O DEVICE, TQFP-100
• Manufacturer: National Semiconductor

Specifications of PC87393VJG

• Data Rate: 2Mbps
• Supply Voltage Range: 3V to 3.6V
• Logic Case Style: TQFP
• No. Of Pins: 100
• Operating Temperature Range: 0°C to +70°C
• Termination Type: SMD
• Transceiver Type: Interface
• Rohs Compliant: No

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6.0 Musical Instrument Digital Interface (MIDI) Port
6.3.6
This register controls enhanced MIDI functions.
Location:
Type:
Bit
Name
Reset
Required
Bit
7
6
5
4
3
2
1
0
MIDI Control Register (MCNTL)
Loopback Mode Enable. When enabled, the MIDI receive signal is internally connected to the MIDI transmit
signal.
0: Disabled (default)
1: Enabled
MIDI Thru Enable. When enabled, the MDRX pin is internally connected to the MDTX pin, which then reflects
the MIDI receive signal. When disabled, the MDTX pin is driven with data coming from the MIDI Port transmit
engine.
0: Disabled (default)
1: Enabled
Reserved. Must be 0.
Pass-Thru Transmit Enable. When enabled, data is transmitted in Pass-Thru (non-UART) mode.
0: Disabled (default)
1: Enabled
Rx Data Ready Interrupt Enable. When enabled, an interrupt request is asserted in response to a Receive
Data Ready event.
0: Disabled
1: Enabled (default)
MDTX Pin Masking Enable. When enabled, the MDTX pin is constantly driven high by the MIDI Port. When
disabled, MDTX serves as the MIDI Port transmit line.
0: Disabled (default)
1: Enabled
Tx Buffer Empty Interrupt Enable. When enabled, an interrupt request is asserted in response to a Transmit
Buffer Empty event.
0: Disabled (default)
1: Enabled
Rx FIFO Enable for Pass-Thru Mode. When this bit is set to 1, the Receive FIFO is enabled in Pass-Thru
mode. This bit is ignored in UART mode.
0: Disabled
1: Enabled (default)
Offset 02h
R/W
Loopback
Enable
Mode
7
0
MIDI Thru
Enable
6
0
Reserved
5
0
0
Pass-Thru
Transmit
Enable
104
Description
4
0
Interrupt
Rx Data
Enable
Ready
(Continued)
3
1
MDTX Pin
Masking
Enable
2
0
Tx Buffer
Interrupt
Enable
Empty
1
0
Enable for
Pass-Thru
Rx FIFO
Mode
0
1