SAF82532N10V32A Infineon Technologies, SAF82532N10V32A Datasheet - Page 62

• Manufacturer Part Number: SAF82532N10V32A
• Description: IC CONTROLLER 2-CH SER 68-PLCC
• Manufacturer: Infineon Technologies

Specifications of SAF82532N10V32A

• Controller Type: Serial Communications Controller (SCC)
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 8mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: SAF82532N10V32A; SAF82532N10V32AIN

Semiconductor Group
Figure 30
SDLC Loop
The loop is formed by connecting TxD output of one station to the RxD input of the next
one (refer to figure 30). This configuration is physically a loop, but logically a
point-to-multipoint configuration.
In every Secondary Station data flow from RxD to TxD is handled depending on
Secondary’s current state as follows:
• Initially, RxD and TxD are connected together with gate delay (OFF Loop state). Data
• After reception of an EOP sequence a Secondary can go to the ON Loop state. As
• If a Secondary is requested (polled) by the Primary to transmit data or responses, it
Processing the EOP sequences is handled automatically by the ESCC2: commands
(GLP, GALP in register CCR1) and state indications (interrupts EOP, OLP, AOLP in
register ISR1) are provided to control and monitor the state of the ESCC2 as Secondary
Station.
sent out from the Primary is passed on by every Secondary to the next one. Thus, data
is transparent to all Secondaries.
opposed to the Off Loop state, all data is forwarded to the next station with one bit
delay.
has to wait for reception of a further EOP sequence. By flipping the seventh ‘1’ of the
EOP sequence to ‘0’ it generates a flag sequence and consequently all following
Secondary Stations are inhibited from sending. Simultaneously, RxD is disconnected
from TxD and transmission of a frame (or several frames) may start (Active ON
Loop state). After terminating transmission the station reconnects RxD to TxD. Thus,
an EOP sequence is formed and another station may start data transmission.
62
SAB 82532/SAF 82532
HDLC/SDLC Serial Mode
07.96