tza3012ahw NXP Semiconductors, tza3012ahw Datasheet - Page 22

• Manufacturer Part Number: tza3012ahw
• Description: 30 Mbits/s Up To 3.2 Gbits/s A-ratetm Fibre Optic Receiver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
System configuration
Refer to Fig.15. A device generating a message is a ‘transmitter’, a device receiving a message is the ‘receiver’.
The device that controls the message is the ‘master’ and the devices which are controlled by the master are the ‘slaves’.
Acknowledge
Refer to Fig.16. Only one data byte is transferred between the start and stop conditions during a write from the transmitter
to the receiver. Each byte of eight bits is followed by an acknowledge bit. The acknowledge bit is a HIGH level signal put
on the bus by the transmitter during which time the master generates an extra acknowledge related clock pulse. A slave
receiver which is addressed must generate an acknowledge after the reception of each byte. Also a master receiver must
generate an acknowledge after the reception of each byte that has been clocked out of the slave transmitter.
The device that acknowledges must pull down the SDA line during the acknowledge clock pulse, so that the SDA line is
stable LOW during the HIGH period of the acknowledge related clock pulse (set-up and hold times must be taken into
consideration). A master receiver must signal an end-of-data to the transmitter by not generating an acknowledge on the
last byte that has been clocked out of the slave. In this event the transmitter must leave the data line HIGH to enable
the master to generate a stop condition; see Fig.19.
2003 May 21
handbook, full pagewidth
30 Mbits/s up to 3.2 Gbits/s
A-rate
SDA
SCL
fibre optic receiver
BY TRANSMITTER
TRANSMITTER /
RECEIVER
DATA OUTPUT
DATA OUTPUT
BY RECEIVER
MASTER
SCL FROM
MASTER
condition
START
S
RECEIVER
Fig.16 Acknowledgment on the I
SLAVE
Fig.15 System configuration.
1
TRANSMITTER /
RECEIVER
22
SLAVE
2
2
C-bus.
TRANSMITTER
not acknowledge
MASTER
acknowledge
8
acknowledgement
clock pulse for
9
TRANSMITTER /
TZA3012AHW
RECEIVER
MBC602
MASTER
Product specification
MBA605