PEF20525 INFINEON [Infineon Technologies AG], PEF20525 Datasheet - Page 42

• Manufacturer Part Number: PEF20525
• Description: 2 Channel Serial Optimized Communication Controller for HDLC/PPP
• Manufacturer: INFINEON [Infineon Technologies AG]

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The functional blocks of SEROCCO-H can be divided into two major domains:
– the microprocessor interface of SEROCCO-H provides access to on-chip registers
– the Serial Communication Controller (SCC) is capable of processing bit-synchronous
Data exchange between the serial communication controller and the microprocessor
interface is performed using FIFOs, decoupling these two domains.
3.1
Figure 9
Data Sheet
and to the "user" portion of the receive and transmit FIFOs (RFIFO/XFIFO). Optionally
these FIFOs can be accessed by an external 4-channel DMA controller.
(HDLC/SDLC/bitsync PPP) and octet-synchronous (octet-sync PPP) as well as fully
transparent data traffic.
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Functional Overview
Block Diagram
External DMA
Block Diagram
Interface
Transmit FIFO
Transmit FIFO
Receive FIFO
Receive FIFO
(32 Byte)
(32 Byte)
(32 Byte)
(32 Byte)
JTAG Test
Interface
5
Serial Channel A
Serial Channel B
Transmit FIFO
Receive FIFO
(32 Byte)
(32 Byte)
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LAP Control
Transmit
Machine
Machine
Protocol
Receive
Protocol
TSA
Functional Overview
Decoder/
Collision
Detection
DPLL
Clock
Control
Oscillator
BRG
PEB 20525
PEF 20525
2000-09-14
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