BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 447

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

I2CINT0 interrupt request
SCL (line)
Internal SDA output
(Master A)
Internal SDA output
(Master B)
SDA line
SDA line
SCL line
3.14.6.6 Generation of Start and Stop Conditions
Start condition
and I2C0CR2<PIN> causes a start condition, the slave address written in the data buffer
register and direction bit to be sent out on the bus. I2C0CR1<ACK> must be set to 1 before
a start condition is generated.
and 0 to I2C0CR2<BB> initiates a sequence for sending out a stop condition on the bus.
busy) when a start condition is detected on the bus, and is cleared to 0 (bus free) when a
stop condition is detected.
after the SCL line is released.
When I2C0SR<BB> = 0, writing 1 to I2C0CR2<MST>, I2C0CR2<TRX>, I2C0CR2<BB>
When I2C0SR<BB> = 1, writing 1 to I2C0CR2<MST>, I2C0CR2<TRX>, I2C0CR2<PIN>
At this time, if the SCL line is pulled low by another device, a stop condition is generated
The bus status can be checked by reading I2C0SR<BB>. I2C0SR<BB> is set to 1 (bus
Figure 3.14.15 Start condition and slave address generation
A6
1
Figure 3.14.16 Stop condition generation
A5
2
SDA line
SCL line
A4
Slave address and direction bit
3
TENTATIVE
TMPA900CM- 446
A3
4
a
Stop condition
A2
b
5
Arbitration lost
Internal SDA output = “1”
A1
6
A0
7
R/W
8
ACK signal
9
TMPA900CM
2009-10-14