z80c30 ZiLOG Semiconductor, z80c30 Datasheet - Page 50

• Manufacturer Part Number: z80c30
• Description: Cmos Scc Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

Write Register 0 (multiplexed bus mode)
Write Register 0 (non-multiplexed bus mode)
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
0
1
1
0
0
1
1
* With Point High Command
* B Channel Only
0
1
0
1
1
0
1
0
Reset Tx Underrun/EOM Latch
Reset Rx CRC Checker
Reset Tx CRC Generator
Null Code
0
0
0
0
1
1
1
1
0
0
0
1
1
1
1
Reset Rx CRC Checker
0
Null Code
Reset Tx CRC Checker
Reset Tx Underrun/EOM Latch
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
0
1
0
Null Code
Point High
Reset Ext/Status Interrupts
Send Abort (SDLC)
Enable Int on Next Rx Character
Reset Tx Int Pending
Error Reset
Reset Highest IUS
Null Code
Reset Ext/Status Interrupts
Send Abort
Enable Int on Next Rx Character
Reset Tx Int Pending
Reset Highest IUS
Null Code
Error Reset
0
0
1
1
1
0
0
1
0
0
1
0
0
1
1
1
0
0
1
1
0
1
1
0
1
0
0
1
1
0
1
1
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
1
0
1
0
0
Register 11
Register 12
Register 0
Register 1
Register 2
Register 3
Register 4
Register 5
Register 6
Register 7
Register 9
Register 10
Register 13
Register 14
Register 15
Select Shift Right Mode
Register 8
Null Code
Select Shift Left Mode
Null Code
0
*
*
Write Register 3
Write Register 1
Write Register 2
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
0
1
1
0
0
1
0
1
Rx 6 Bits/Character
Rx 5 Bits/Character
Rx 7 Bits/Character
Rx 8 Bits/Character
0
0
1
1
0
0
1
1
Rx Int Disable
Rx Int on Special Condition Only
Rx Int on First Character or Special Condition
Int on all Rx Characters or Special Condition
Sync Character Load Inhibit
Rx CRC Enable
Rx Enable
Address Search Mode (SDLC)
Enter Hunt Mode
Auto Enables
Tx Int Enable
Parity is Special Condition
WAIT/DMA Request Function
WAIT/DMA Request
V0
V1
V4
V5
V6
V7
Ext Int Enable
WAIT/DMA Request on
Receive /Transmit
V2
V3
Interrupt
Vector