Z80181 Zilog., Z80181 Datasheet - Page 38

• Manufacturer Part Number: Z80181
• Description: SMART ACCESS CONTROLLER (SAC)
• Manufacturer: Zilog.

Zilog
SCC REGISTERS (Continued)
2-38
Write Register 4
D7 D6 D5 D4 D3 D2 D1 D0
0
0
1
1
0
1
0
1
X1 Clock Mode
X16 Clock Mode
X32 Clock Mode
X64 Clock Mode
0
0
1
1
0
1
0
1
8-Bit Sync Character
16-Bit Sync Character
SDLC Mode (01111110 Flag)
External Sync Mode
0
0
1
1
0
1
0
1
Sync Modes Enable
1 Stop Bit/Character
1 1/2 Stop Bits/Character
2 Stop Bits/Character
(e)
Figure 50. Write Register Bit Functions (Continued)
Write Register 3
D7 D6 D5 D4 D3 D2 D1 D0
0
0
1
1
0
1
0
1
Parity Enable
Parity EVEN//ODD
Rx 5 Bits/Character
Rx 7 Bits/Character
Rx 6 Bits/Character
Rx 8 Bits/Character
(d)
Write Register 5
D7 D6 D5 D4 D3 D2 D1 D0
0
0
1
1
Rx Enable
Sync Character Load Inhibit
Address Search Mode (SDLC)
Rx CRC Enable
Enter Hunt Mode
Auto Enables
0
1
0
1
Tx 5 Bits(Or Less)/Character
Tx 7 Bits/Character
Tx 6 Bits/Character
Tx 8 Bits/Character
(f)
S
MART
A
CCESS
Tx CRC Enable
RTS
Tx Enable
Send Break
DTR
/SDLC/CRC-16
C
DS971800500
ONTROLLER
Z80181
SAC
™