FDC37M817-MS Standard Microsystems (SMSC), FDC37M817-MS Datasheet - Page 68

• Manufacturer Part Number: FDC37M817-MS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37M817-MS

• Pin Count: 100
• Lead Free Status / RoHS Status: Compliant

The FDC37M81x incorporates two full function
UARTs. They are compatible with the NS16450,
the 16450 ACE registers and the NS16C550A.
The UARTS perform serial-to-parallel conversion
on received characters and parallel-to-serial
conversion on transmit characters. The data rates
are independently programmable from 460.8K
baud down to 50 baud. The character options are
programmable for 1 start; 1, 1.5 or 2 stop bits;
even, odd, sticky or no parity; and prioritized
interrupts.
programmable baud rate generator that is capable
of dividing the input clock or crystal by a number
from 1 to 65535. The UARTs are also capable of
supporting the MIDI data rate. Refer to the
Configuration
disabling, power down and changing the base
address of the UARTs.
UART is enabled by programming OUT2 of that
The
*Note: DLAB is Bit 7 of the Line Control Register
DLAB*
Registers
X
X
X
X
X
X
X
0
0
0
1
1
UARTs
A2
0
0
0
0
0
0
1
1
1
1
0
0
The interrupt from a
for
each
Table 29 - Addressing the Serial Port
information
A1
0
0
0
1
1
1
0
0
1
1
0
0
contain
SERIAL PORT (UART)
A0
0
0
1
0
0
1
0
1
0
1
0
1
on
a
68
Receive Buffer (read)
Transmit Buffer (write)
Interrupt Enable (read/write)
Interrupt Identification (read)
FIFO Control (write)
Line Control (read/write)
Modem Control (read/write)
Line Status (read/write)
Modem Status (read/write)
Scratchpad (read/write)
Divisor LSB (read/write)
Divisor MSB (read/write
UART to a logic "1".
disables that UART's interrupt. The second UART
also supports IrDA 1.0, HP-SIR and ASK-IR
modes of operation.
Note: The UARTs may be configured to share an
interrupt. Refer to the Configuration section for
more information.
REGISTER DESCRIPTION
Addressing of the accessible registers of the Serial
Port is shown below. The base addresses of the
serial ports are defined by the configuration
registers (see Configuration section). The Serial
Port
increasing
addresses. The FDC37M81x contains two serial
ports, each of which contain a register set as
described below.
REGISTER NAME
registers
addresses
are
located
OUT2 being a logic "0"
above
at
these
sequentially
base