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Z80 Datasheet(PDF) 306 Page - Zilog, Inc.

Part # Z80
Description  Z80 CPU PERIPHERALS
PDF  330 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

Z80 Datasheet(HTML) 306 Page - Zilog, Inc.

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<%27 2GTKRJGTCNU
7UGT /CPWCN
UM008101-0601
Serial Input/Output
286
Sync Modes 0 and 1 (D4 and D5)
These bits select various options for character synchronization.
Figure 118. Write Register 4
ClockRate0 and 1 (D6and D7)
These bits specify the multiplier between the clock (TxC and RxC)and data
rates. For synchronous modes, the x1 clock rate must be specified. Any rate
may be specified for asynchronous modes; however, the same rate must be
Table 24. Sync Modes
Sync Mode 1
Sync Mode 0
Result
0
0
8-bit programmed sync
0
1
16-bit programmed sync
1
0
SDLC mode (01111110flagpattern)
1
1
External Sync mode
Parity Enable
Parity Even/Odd
D7
D6
D5
D4
D3
D2
D1
D0
00
01
10
11
SYNC Modes Enable
1 Stop Bit/Character
1-1/2 Stop Bits/Character
2 Stop Bits/Character
00
01
10
11
8-Bit SYNC Character
16-Bit SYNC Character
SDLC Mode (0111 1110 Flag)
External SYNC Mode
00
01
10
11
X1 Clock Mode
X16 Clock Mode
X32 Clock Mode
X64 Clock Mode



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