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Z8023016PSG Datasheet(PDF) 13 Page - Zilog, Inc.

Part # Z8023016PSG
Description  Enhanced Serial Communications Controller
PDF  118 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z8023016PSG Datasheet(HTML) 13 Page - Zilog, Inc.

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PS005308-0609
Functional Description
Z80230/Z85230/L
Product Specification
8
Functional Description
The architecture of the ESCC is described based on its functionality as a:
• Data communications device, which transmits and receives data in a wide variety of
protocols
• Microprocessor peripheral, in which the ESCC offers valuable features such as
vectored interrupts and DMA support
The details of the communication between the receive and transmit logic of the system bus
are displayed in Figure 5 and Figure 6 on page 9. The features and data path for each of
the ESCC A and B channels are identical. For more information on SCC/ESCC and ISCC
Family of Products, refer to the respective User Manuals available for download from
www.zilog.com.
Figure 5. ESCC Transmit Data Path
WR7
WR6
SYNC Register
20-Bit TX
Shift Register
Zero Insert
CRC-SDLC
CRC-Gen
From Receiver
SYNC Register
Internal Data Bus
WR8
TX FIFO
Internal TXD
ASYNC
SYNC
SDLC
Transmit Clock
Final Tx
MUX
NRZI Encode
Transmit
MUX and
2 Bit Delay
TXD
to Other Channel
4 Bytes



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