C165H Datasheet, PDF (290/499 Pages) Infineon Technologies AG – EMBEDDED C166 WITH USART IOM-2 AND HDLC SUPPORT

C165H
High-Speed Synchronous Serial Interface
13
High-Speed Synchronous Serial Interface
The High-Speed Synchronous Serial Interface SSC provides flexible high-speed serial
communication between the C165H and other microcontrollers, microprocessors or
external peripherals.
The SSC supports full-duplex and half-duplex synchronous communication up to 18
MBaud in SSC Master Mode and 9 MBaud in SSC Slave Mode (@ 36 MHz CPU 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 is double-buffered. A 16-bit baud rate generator
Y _{provides the SSC with a separate serial clock signal.}
The high-speed synchronous serial interface can be configured in a very flexible way, so
R it can be used with other synchronous serial interfaces (eg. the ASC in synchronous
mode), serve for master/slave or multimaster interconnections or operate compatible
A ^{with the popular SPI interface. So it can be used to communicate with shift registers (IO}
expansion), peripherals (eg. EEPROMs etc.) or other controllers (networking). The SSC
supports half-duplex and full-duplex communication. Data is transmitted or received on
IN ^{- pins MTSR/P3.9 (Master Transmit / Slave Receive) and MRST/P3.8 (Master Receive /}
Slave Transmit). The clock signal is output or input on pin SCLK/P3.13. These pins are
T ^{alternate functions of Port 3 pins.}
IM P Ports & Direction Control
Alternate Functions
L ^{R System}
Data Registers
E ^E SSCCLC
R ^{C ODP3}
DP3
X _P3
P _{E SCLK / P3.13}
- ^{MTSR / P3.9}
SSCBR
SSCTB
SSCRB
Control Registers
Interrupt Control
SSCCON
SSCTIC
SSCRIC
SSCEIC
MRST / P3.8
SSCCLC SSC Clock Control Register
ODP3 Port 3 Open Drain Control Register
DP3
Port 3 Direction Control Register
SSCBR SSC Baud Rate Generator/Reload Register
SSCTB SSC Transmit Buffer Register
SSCTIC SSC Transmit Interrupt Control Register
P3
Port 3 Data Register
SSCCON SSC Control Register
SSCRB SSC Receive Buffer Register
SSCRIC SSC Receive Interrupt Control Register
SSCEIC SSC Error Interrupt Control Register
Figure 96 SFRs and Port Pins associated with the SSC
Data Sheet
290
2001-04-19