z80189 ZiLOG Semiconductor, z80189 Datasheet - Page 113
z80189
Manufacturer Part Number
z80189
Description
Z80180, Z8s180, Z8l180 Mpu Operation
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z80189.pdf
(326 pages)
- Current page: 113 of 326
- Download datasheet (5Mb)
98
UM005003-0703
Bit
Position Bit/Field R/W
3
1
–
Z8018x
Family MPU User Manual
2
SM1:0
MMOD
Table 12.
DM1
0
0
1
1
W
R/W
DM0
0
1
0
1
Channel 0 Destination
Value
Memory/I/O
Memory
Memory
Memory
I/O
Description
Source Mode Channel — Specifies whether the source
for channel 0 transfers is memory, I/O, or memory
mapped I/O and the corresponding address modifier.
Reference Table 13.
DMA Memory Mode Channel 0 — When channel 0 is
configured for memory to/from memory transfers, the
external
timing. Instead, two automatic transfer timing modes are
selectable - BURST (MMOD is 1) and CYCLE STEAL
(MMOD is 0). For BURST memory to/from memory
transfers, the DMAC takes control of the bus
continuously until the DMA transfer completes (as shown
by the byte count register is 0). In CYCLE STEAL mode,
the CPU is given a cycle for each DMA byte transfer
cycle until the transfer is completed.
For channel 0 DMA with I/O source or destination, the
DREQ
ignored.
0 input times the transfer and thus MMOD is
DREQ
0 input is not used to control the transfer
Address Increment/Decrement
+ 1
-1
fixed
fixed
Related parts for z80189
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Ez80f91 Mini Enet Module
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Development Boards & Kits - Other Processors ZiLOG TCP/IP Software Suite (ZTP Rev 1.4) - Object Code (Free download on www.zilog.com)
Manufacturer:
ZiLOG
Part Number:
Description:
Z90233, Z90234, And Z90231 Ezvision 200 Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
40-pin Low-cost Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
40-pin Low-cost Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller In-circuit Emulator Ice Device
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
High Performance Microcontrollers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Cmos Usc Universal Serial Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Iusc Integrated Universal Serial Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
16-bit Processor
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Pcmcia Interface Solution
Manufacturer:
ZiLOG Semiconductor
Datasheet: