tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 425

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Serial Bus Interface (SBI)
16. Serial Bus Interface (SBI)
canceller
16.1
Noise
fsys/2
The TMP19A44 contains a Serial Bus Interface (SBI) channel, which has the following two operating modes:
In the I
synchronous 8-bit SIO mode, the SBI is connected to external devices via PC6 (SCK), PC4 (SO) and PC5 (SI).
The following table shows the programming required to put the SBI in each operating mode.
The configuration is shown in Fig. 16.1.
SBI control register 2/
SBI status register
•
•
2
I
Clock-synchronous 8-bit SIO mode
C bus mode, the SBI is connected to external devices via PC4 (SDA) and PC5 (SCL). In the clock-
2
C bus mode (with multi-master capability)
I2C bus mode
Clock-
synchronous 8-bit
SIO mode
synchroni-
SBICR2/
Frequency
zation +
I
control
control
SBISR
2
clock
clock
divider
C bus
Configuration
SIO
I
address register
2
C bus
PCODE <6:4> = x0x
Transfer
I2CAR
PCODE <6:4> = 11
control
circuit
Port open drain
output
Fig. 16.1 SBI Block Diagram
TMP19A44 (rev1.3) 16-1
SBI data
buffer register
Shift register
INTS0 interrupt request
SBIDBR
PCCR<6:4> = 101 (clock output)
PCCR<6:4> = 001(clock input)
Port control register
PCCR<6:4> = x11
SBI control registers
SBICR0,1
data control
data control
0 and 1
I
2
C bus
SIO
SBI baud rate register 0
canceller
SBIBR0
Noise
Port function register
TMP19A44
PCFC1<6:4> = 011
PCFC1<6:4> = 111
SCL
SCK
SO
SI
SDA
control
output
Input/
2010-04-01
(SCK)
(SO/SDA)
PC6
(SI/SCL)
PC4
PC5