PSB21473FV13XT Infineon Technologies, PSB21473FV13XT Datasheet - Page 262

• Manufacturer Part Number: PSB21473FV13XT
• Manufacturer: Infineon Technologies

Specifications of PSB21473FV13XT

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3.135V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 144
• Lead Free Status / RoHS Status: Compliant

INCA-D
PSB 21473
The High-Speed Synchronous Serial Interfaces
Figure 16-4 Serial Clock Phase and Polarity Options
16.1
Full-Duplex Operation
The different devices are connected through three lines. The definition of these lines is
always determined by the master: The line connected to the master's data output pin
MTSRx is the transmit line, the receive line is connected to its data input line MRSTx,
and the clock line is connected to pin SCLKx. Only the device selected for master
operation generates and outputs the serial clock on pin SCLKx. All slaves receive this
clock, so their pin SCLKx must be switched to input mode. The output of the master’s
shift register is connected to the external transmit line, which in turn is connected to the
slaves’ shift register input. The output of the slaves’ shift register is connected to the
external receive line in order to enable the master to receive the data shifted out of the
slave. The external connections are hard-wired, the function and direction of these pins
is determined by the master or slave operation of the individual device.
Note: The shift direction shown in the figure applies for MSB-first operation as well as for
LSB-first operation.
When initializing the devices in this configuration, select one device for master operation
(SSCxMS=’1’), all others must be programmed for slave operation (SSCxMS=’0’).
Initialization includes the operating mode of the device's SSCx and also the function of
the respective port lines (see “Port Control”).
Data Sheet
262
2003-03-31