TOIM3232 Ver la hoja de datos (PDF) - Temic Semiconductors
Número de pieza
componentes Descripción
Fabricante
TOIM3232 Datasheet PDF : 9 Pages
| |||
TOIM3000/3232
Software for the TOIM3232
The control word is composed of two characters, written in hexadecimal, in format:YZ.
UART Programming
For proper operation, the RS232 must be programmed to
send a START bit plus an 8 bit data word, YZ and no
STOP bit for every word sent. The transfer rate for pro-
gramming must be identical with the formerly
programmed data rate, or after resetting the TOIM3232,
the default rate of 9600 bit/s is used.
Software Algorithm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ STEP RESET BR/D RD_UART TD_UART RD_IR TD_IR
COMMENTS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 1 HIGH X
X
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2 LOW X
X
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 3 LOW HIGH
X
X
X
X Resets all internal registers. Resets
IrDA default baud rate of 9600 bit/s.
X
X
X Wait at least 7 ms.
X
X
X Wait at least 7 ms.
The TOIM3232 now enters the con-
trol word (programming) mode.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 4 LOW HIGH
YZ
X
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ with Y = 1
X
X Sending the control word YZ.
Send ‘1Z’ if 1.627 ms pulses are
for
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 1.627 ms
used. Otherwise send ‘0Z’ if 3/16 bit
pulses are used. ‘Y6’ keeps the 9.6
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Y = 0
kbit/s data rate, whereas the ’0Z’
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ for 3/16 bit
selects the 3/16 bit time pulses.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ length
Z = 0 sets to 115.2 kbit/s. Then wait
at least 1 ms for hold-time.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 5 LOW LOW DATA
DATA DATA DATA Data communication between the
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ TOIM3232 and the RS232 port has
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ been established by BR/D LOW. The
TOIM3232 now enters the data
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ transmission mode. Both RESET
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ and BR/D must be kept LOW (‘0’)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ during data mode. Software can re-
program a new data rate by re-start-
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ing from step 3. The UART also
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ must be set to the correct data rate
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ***).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ***) For programming the UART, refer to the National Semiconductor’s data sheet of PC 16550 UART.
TELEFUNKEN Semiconductors
7 (9)
Rev. A4, 26-Mar-96
Preliminary Information
Share Link: 