Serial Port 2, Logical Device 5
TABLE 80 - SERIAL PORT 2, LOGICAL DEVICE 5 [LOGICAL DEVICE NUMBER = 0X05]
NAME
REG INDEX
DEFINITION
STATE
Serial Port 2
0xF0 R/W Bit[0] MIDI Mode
C
Mode Register
= 0MIDI support disabled (default)
= 1MIDI support enabled
Bit[1] High Speed
Default = 0x00
= 0High Speed disabled(default)
= 1High Speed enabled
Bit[7:2] Reserved, set to zero
on Vcc POR or
Reset_Drv
IR Option Register
0xF1 R/W Bit[0] Receive Polarity
C
= 0 Active High (Default)
= 1 Active Low
Bit[1] Transmit Polarity
= 0 Active High
(EN 1)
Default = 0x02
on Vcc POR or
Reset_Drv
= 1 Active Low (Default)
Bit[2] Duplex Select
= 0 Full Duplex (Default)
= 1 Half Duplex
Bits[5:3] IR Mode
= 000 Standard (Default)
= 001 IrDA
= 010 ASK-IR
= 011 Reserved
= 1xx Reserved
Bit[6] IR Location Mux
= 0 Use Serial port TXD2 and RXD2 (Default)
= 1Use alternate IRRX2 (pin 81) and IRTX2 (pin 82)
Bit[7] Reserved, write 0
IR Half Duplex
Timeout
0xF2
Bits [7:0]
These bits set the half duplex time-out for the IR port.
This value is 0 to 10msec in 100usec increments.
0= blank during transmit/receive
1= blank during transmit/receive + 100usec
. . .
Default = 0x03
on Vcc POR or
Reset_Drv
191
SMSC [ SMSC CORPORATION ]
