tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 444
tmp19a44fda
Manufacturer Part Number
tmp19a44fda
Description
32bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP19A44FDA.pdf
(672 pages)
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Serial Bus Interface (SBI)
SCL
SDA
<PIN>
INTS0 interrupt
request
Example: When receiving N data words
INTS0 interrupt (after data transmission)
INTS0 interrupt (first to (N-2)th data reception)
INTS0 interrupt ( (N-1)th data reception)
INTS0 interrupt (Nth data reception)
INTS0 interrupt (after completing data reception)
9
To terminate the data transmission from the transmitter, <ACK> must be set to "0" immediately
before reading the second to last data word. This disables generation of an acknowledgment clock
for the last data word. When the transfer is completed, an interrupt request is generated. After the
interrupt processing, <BC2:0> must be set to "001" and the data must be read so that a clock is
generated for 1-bit transfer. At this time, the master receiver holds the SDA bus line at the "H"
level, which signals the end of transfer to the transmitter as an acknowledgment signal.
In the interrupt processing for terminating the reception of 1-bit data, the stop condition is
generated to terminate the data transfer.
Fig. 16.12 Terminating Data Transmission in the Master Receiver Mode
(Note) X: Don't care
SBICR1
Reg.
End of interrupt
Reg.
End of interrupt
SBI0CR1 ← X X X 0 0 X X X
Reg.
End of interrupt
SBI0CR1 ← 0 0 1 0 0 X X X
Reg.
End of interrupt
Processing to generate the stop condition
End of interrupt
D7
Read out the received data after clearing <ACK> to "0."
1
← X X X X 0 X X X
← SBI0CBR
← SBIDBR
← SBIDBR
← SBIDBR
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
7 6 5 4 3 2 1 0
D6
2
TMP19A44 (rev1.3) 16-20
D5
3
D4
4
Sets the number of bits of data to be received and specify
whether ACK is required.
Reads dummy data.
Reads the first to (N-2)th data words.
Disables generation of acknowledgement clock.
Reads the (N-1)th data word.
Generates a clock for 1-bit transfer.
Reads the Nth data word.
Terminates the data transmission.
D3
5
D2
6
D1
7
D0
8
TMP19A44
Master to slave
Slave to master
1
Read out the received
data after setting
<BC2:0> to "001."
Acknowledgment
signal to transmitter
2010-04-01
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