Z0847006PSG Zilog, Z0847006PSG Datasheet - Page 276
Z0847006PSG
Manufacturer Part Number
Z0847006PSG
Description
IC 6MHZ Z80 NMOS DART 40-DIP
Manufacturer
Zilog
Series
Z80r
Datasheet
1.Z0847006PSG.pdf
(330 pages)
Specifications of Z0847006PSG
Processor Type
Z80
Features
Dual Channel Asynchronous Receiver/Transmitter (DART)
Speed
6MHz
Voltage
5V
Mounting Type
Through Hole
Package / Case
40-DIP (0.620", 15.75mm)
Mounting Style
Through Hole
Cpu Speed
6MHz
Digital Ic Case Style
DIP
No. Of Pins
40
Supply Voltage Range
5V
Operating Temperature Range
0°C To +70°C
Svhc
No SVHC (18-Jun-2010)
Base Number
847006
Rohs Compliant
Yes
Clock Frequency
6MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number:
Z0847006PSG
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UM008101-0601
< % 2 7 2 G T K R J G T C N U
7 U G T / C P W C N
SDLC Transmit
Beginning
0111 1110
Opening
Flag
The control field of the SDLC frame is transparent to the Z80 SIO, and it
is transferred to the CPU. The Z80 SIO handles the Frame Check
sequence in a way that simplifies the program by incorporating features,
such as initializing the CRC generator to all 1s, resetting the CRC checker
when the opening flag is detected in the Receive mode, and sending the
Frame Check/Flag sequence in the Transmit mode. Controller hardware is
simplified by automatic zero insertion and deletion logic contained in the
Z80 SIO.
Table 8
and Transmit modes. WR0 points to other registers and issues commands.
WR1 defines the interrupt modes. WR2 stores the interrupt vector. WR7
stores the flag character and WR6 the secondary address.
Figure 113. Transmit/Receive SDLC/HDLC Message Format
Initialization
The SDLC Transmit mode must be initialized with the following parame-
ters: SDLC mode, SDLC polynomial, Request To Send, Data Terminal
Ready, transmit character length, transmit interrupt modes (or Wait/Ready
function), Transmit Enable, Auto Enables, and External/Status interrupt. Se
“SDLC Transmit Mode” on page
Selecting the SDLC mode and the SDLC polynomial allows the Z80 SIO to
initialize the CRC Generator to all 1s. Initialization is accomplished by
issuing the Reset Transmit CRC Generator command WR0. Refer to the
Address
8 Bits
lists the contents of WR3, WR4, and WR5 during SDLC Receive
Data Field or
I-Field
Message Flow
15
262)
CRC
#1
8 7
CRC
#2
0
0111 1110
Closing
Serial Input/Output
Flag
End
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