PEF 20525 F V1.3 Infineon Technologies, PEF 20525 F V1.3 Datasheet - Page 136

• Manufacturer Part Number: PEF 20525 F V1.3
• Description: IC CTRL PPP/HDLC SERIAL TQFP-100
• Manufacturer: Infineon Technologies

Specifications of PEF 20525 F V1.3

• Function: Serial Optimized Communications Controller
• Interface: ASYNC, BISYNC, HDLC, PPP
• Number Of Circuits: 2
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 50mA
• Power (watts): 150mW
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-LFQFP
• Includes: Bit Processor Functions, Serial Communication Controllers (SCCs)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PEF20525FV1.3X; PEF20525FV13XP; SP000007592

Data Sheet
STI
TRES
XIF
Start Timer Command
Self-clearing command bit:
HDLC Automode:
In HDLC Automode the timer is used internally for the autonomous
protocol support functions. The timer is started automatically by the SCC
when an I-Frame is sent out and needs to be acknowledged.
If the ’STI’ command is issued by software:
STI=’1’
All protocol modes except HDLC Automode:
In these modes the timer is operating as a general purpose timer.
STI=’1’
Timer Reset
Self-clearing command bit.
This bit deactivates timer operation:
TRES=’0’
TRES=’1’
Transmit I-Frame
Self-clearing command bit.
This command bit is significant in HDLC Automode only.
XIF=’1’
An S-Frame with poll bit set is sent out and the internal
timer is started expecting an acknowledge from the
remote station via an I- or S-Frame.
The timer is stopped after receiving an acknowledge
otherwise the timer expires generating a timer interrupt.
Note: In HDLC Automode, bit ’TMD’ in register
This commands starts timer operation.
The timer can be stopped by setting bit ’TRES’.
Note: Bit ’TMD’ in register
Timer operation enabled.
Timer operation stopped.
Initiates the transmission of an I-frame in auto-mode.
Additional to the opening flag, the address and control
fields of the frame are added by SEROCCO-H.
must be set to ’1’
proper operation
5-136
Register Description (CMDRH)
TIMR3
must be cleared for
PEB 20525
PEF 20525
2000-09-14
TIMR3