FDC37C665IR SMSC Corporation, FDC37C665IR Datasheet - Page 84

• Manufacturer Part Number: FDC37C665IR
• Description: 3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
• Manufacturer: SMSC Corporation

XMITTER are controlled separately, either one
or both can be in the polled mode of operation.
In this mode, the user's program will check
RCVR and XMITTER status via the LSR. LSR
definitions for the FIFO Polled Mode are as
follows:
-Bit 0=1 as long as there is one byte in the
-Bits 1 to 4 specify which error(s) have occurred.
*Note: The percentage error for all baud rates, except where indicated otherwise, is 0.2%.
BAUD RATE
RCVR FIFO.
DESIRED
way as when in the interrupt
Character error status is handled the same
115200
230400
460800
19200
38400
57600
134.5
1200
1800
2000
2400
3600
4800
7200
9600
110
150
300
600
50
75
GENERATE 16X CLOCK
Table 35 - Baud Rates Using 1.8462 MHz Clock (24 MHz/13)
DIVISOR USED TO
32770
32769
2304
1536
1047
857
768
384
192
96
64
58
48
32
24
16
12
6
3
2
1
BETWEEN DESIRED AND ACTUAL*
84
PERCENT ERROR DIFFERENCE
mode, the IIR is not affected since EIR bit 2=0.
-Bit 5 indicates when the XMIT FIFO is empty.
-Bit 6 indicates that both the XMIT FIFO and
-Bit 7 indicates whether there are any errors in
There is no trigger level reached or timeout
condition indicated in the FIFO Polled Mode,
however, the RCVR and XMIT FIFOs are still
fully capable of holding characters.
shift register are empty.
the RCVR FIFO.
0.001
0.004
0.005
0.030
0.16
0.16
0.16
0.16
-
-
-
-
-
-
-
-
-
-
-
-
-
BIT 7 OR 6
CRC:
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
1