tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 309

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note: If the transfer mode is changed during receive operation, the contents of SBI0DBR will be lost. If it is
Figure 3.12.24 Transmit Data Retention Time When Terminating Transmission
INTS2 interrupt
necessary to change the transfer mode, first terminate reception (by writing a 0 to SBI0CR1<SIOS>)
and read out the last data received.
2)
SBI0CR1 ← 0 1 1 1 0 X X X
SBI0CR1 ← 1 0 1 1 0 0 0 0
Reg.
8-bit receive mode
the device to receive data. Data is read into the shift register from the SI pin synchronously with
the serial clock, beginning with the least significant bit. When 8 bits of data have been read, the
received data is transferred from the shift register to SBI0DBR and an INTS2 (buffer full)
interrupt request is generated, requesting that the received data be read out. The received data is
read out from SBI0DBR by an interrupt service routine.
clock until the receive data is read out from SBI0DBR.
clock. The maximum transfer rate for external clock operation thus depends on the maximum
delay between an interrupt request being generated and the received data being read out.
interrupt service routine for the INTS2 interrupt. Once SBI0CR1<SIOS> has been cleared,
reception will be terminated when all the received data bits have been written into SBI0DBR.
Check SBI0SR<SIOF> in the program to determine whether reception has been terminated.
SBI0SR<SIOF> is reset to 0 upon the termination of reception. After confirming that reception
has been terminated, read out the last data item received. If SBI0CR1<SIOINH> has been set
to 1, reception will be aborted immediately and SBI0SR<SIOF> cleared to 0. (In that case, the
received data is invalid and need not be read out.)
SCK pin
SIOF
SO pin
After selecting receive mode in the control register, write a 1 to SBI0CR1<SIOS>, enabling
If an internal clock is being used, the automatic wait function is activated, halting the serial
If an external clock is being used, shift operation is synchronized to the externally sourced
To terminate reception write a 0 to SBI0CR1<SIOS> or a 1 to SBI0CR1<SIOINH> in the
← SBIODBR
7 6 5 4 3 2 1 0
bit 6
TMP1942CY/CZ-308
Select receive mode.
Start reception.
Read received data.
bit 7
t
SODH
= Min. 3.5/f
sys
TMP1942CY/CZ
/2 [s]