Z16F2800100ZCOG Zilog, Z16F2800100ZCOG Datasheet - Page 230

• Manufacturer Part Number: Z16F2800100ZCOG
• Description: DEV KIT FOR Z16F ZNEO
• Manufacturer: Zilog
• Series: ZNEO™r
• Type: MCUr

Specifications of Z16F2800100ZCOG

• Contents: Evaluation Board, Software and Documentation
• For Use With/related Products: Z16F Series
• For Use With: 269-4661 - KIT ACC ETHERNET SMART CABLE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4537

PS022008-0810
S
Figure 45. Data Transfer Format - Master Read Transaction with 7-Bit Address
or the START bit (end this transaction, start a new one). The transmit data register is
flushed automatically.
Master Read Transaction with a 7-Bit Address
Figure 45
The procedure for a Master read operation to a 7-bit addressed Slave is as follows:
1. Software initializes the MODE field in the I
2. Software writes the I
3. Software asserts the START bit of the I
4. If this is a single byte transfer, software asserts the NAK bit of the I
5. The I
6. The I
7. The I
8. The I
9. The I
10. Software responds by reading the I
11. The I
Address
with 7- or 10-bit addressing (I
The MODE field selects the address width for this node when addressed as a Slave,
not for the remote Slave. Software asserts the IEN bit in the I
so that after the first byte of data has been read by the I
Acknowledge instruction is sent to the I
next High period of SCL.

If the slave does not acknowledge the address byte, the I
bit in the I
register. Software responds to the Not Acknowledge interrupt by setting the STOP bit
and clearing the TXI bit. The I
the STOP condition on the bus and clears the STOP and NCKI bits. The transaction is
complete (ignore the following steps).
signal.
last, software must set the
else an Acknowledge.
Slave
2
2
2
2
2
2
displays the data transfer format for a read operation to a 7-bit addressed Slave.
C Controller sends the START condition.
C Controller sends the address and read bit out the SDA signal.
C Slave acknowledges the address by pulling the SDA signal Low during the
C Controller shifts in the first byte of data from the I
C Controller asserts the Receive interrupt.
C Controller sends a Not Acknowledge to the I
2
C Status register, sets the
R=1
2
C Data register with a 7-bit Slave address plus the read bit (=1).
P R E L I M I N A R Y
NAK
A
2
2
C bus protocol allows mixing Slave address types).
bit of the I
C Controller flushes the transmit data register, sends
2
C Data register. If the next data byte is to be the
ACKV
Data
2
2
C Control register.
C Slave.
2
C Control register.
bit and clears the
2
C Mode register for Master/Slave mode
A
2
C Slave if this is the last byte,
2
C Controller, a Not
2
C Controller sets the NCKI
I
2
2
C Master/Slave Controller
C Slave on the SDA
Product Specification
Data
ACK
2
C Control register.
ZNEO
bit in the I
2
C Control register
Z16F Series
A
2
C State
P/S
214