TC1920 Datasheet, PDF (31/78 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller

TC1920
Preliminary
High-Speed Synchronous Serial Interface (SSC)
The High Speed Synchronous Serial Interface SSC provides serial communication
between microcontrollers, microprocessors or external peripherals. The SSC supports
full-duplex and half-duplex synchronous communication up to 25 MBaud (@ 50 MHz
module clock). The serial clock signal can be generated by the SSC itself (master mode)
or be received from an external master (slave mode). Data width, shift direction, clock
polarity and phase are programmable. This allows communication with SPI-compatible
devices. Transmission and reception of data are double-buffered. A 16-bit baud rate
generator provides the SSC with a separate serial clock signal.
Features:
• Master and slave mode operation
– Full-duplex or half-duplex operation
• Flexible data format
– Programmable number of data bits : 2 to 16 bit
– Programmable shift direction : LSB or MSB shift first
– Programmable clock polarity : idle low or high state for the shift clock
– Programmable clock/data phase : data shift with leading or trailing edge of SCLK
• Maximum baudrates: 25 MBaud in Master, 12.5 in Slave mode (@ 50 MHz module
clock)
Interrupt generation
– on a transmitter empty condition
– on a receiver full condition
– on an error condition (receive, phase, baudrate, transmit error)
• Three pin interface
C lock
C on tro l
f _{h w _ c lk}
Address
Decoder
EIR
Interrupt RIR
C on tro l
TIR
SSC
M o d ule
(K erne l)
Figure 8 SSC Interface Diagram
RXD
TXD
RXD
TXD
S la v e
M aster
Port
C o n tro l
MTSR
MRST
SCLK
M C B04505_m od
Data Sheet
27
V 1.3, 2003-10