SAF82532N10V32A Infineon Technologies, SAF82532N10V32A Datasheet - Page 72

• Manufacturer Part Number: SAF82532N10V32A
• Description: IC CONTROLLER 2-CH SER 68-PLCC
• Manufacturer: Infineon Technologies

Specifications of SAF82532N10V32A

• Controller Type: Serial Communications Controller (SCC)
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 8mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: SAF82532N10V32A; SAF82532N10V32AIN

Semiconductor Group
Transmitter Status Bit
The status bit ‘Flow Control Status’ (STAR:FCS) indicates the current state of the
transmitter, as follows:
0: if the transmitter is in XON state,
1: if the transmitter is in XOFF state.
Note: The transmitter cannot be turned off by software without disrupting data possibly
Flow Control for Received Data
After writing a character value to register TIC (Transmit Immediate Character) its
contents are inserted in the outgoing character stream
• immediately upon writing this register by the microprocessor if the transmitter is in
• after the end of a character currently being transmitted if the transmitter is not in IDLE
Transmission via this register is possible even when the transmitter is in XOFF state
(however, CTS must be ‘low’).
The TIC register is an eight-bit register. The number of significant bits is determined by
the programmed character length (right justified). Parity value (if programmed) and
selected number of stop bits are automatically appended, similar to the characters
written in the XFIFO. The usage of TIC is independent of flow control, i.e. is not affected
by bit MODE:FLON.
To control access to register TIC, an additional status bit STAR:TEC (TIC Executing) is
implemented which signals that transmission command of currently programmed TIC is
accepted but not completely executed. Further access to register TIC is only allowed if
bit STAR:TEC is ‘0’.
6.4.3
Transmitter
The transmitter output is enabled if CTS signal is ‘LOW’ OR the recognition of the XON
characters (if MODE:FLON = ‘1’). If the MODE:FLON = ‘0’, then the transmitter is only
enabled when the CTS signal is ‘LOW’. Setting the MODE:FCTS = ‘1’ allows the
transmitter to send data independent of the condition of the CTS signal, the
in-band flow control (XON/XOFF) method would still be operational if MODE:FLON = ‘1’.
IDLE state. If no further characters (XFIFO contents) are to be transmitted, i.e. the
transmitter returns to IDLE state after transmission of TIC, an ALLS (All Sent) interrupt
will be generated.
state. This does not affect the contents of the XFIFO. Transmission of characters from
XFIFO is resumed after the contents of register TIC are shifted out.
remaining in the XFIFO.
Selectable Out-of-band Flow Control for Transmitter and Receiver (V3.x)
72
Asynchronous Serial Mode
SAB 82532/SAF 82532
07.96