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Revision B User Manual
for the VME-SIO4: Board Revision: A
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 3580, Phone: (256) 880-8787
21
3.1.5.3 Interrupt Vector Register
This is a hardware modifiable Interrupt Vector Register, to indicate the source of the interrupt, encoding is
as follows D0 being the LSB:
D0..D2 Hardware Encoded
000
Enable Channel 0 Sync Detected
Enable Channel 0 Tx FIFO Empty Interrupt
001
Enable Channel 1 Sync Detected
Enable Channel 1 Tx FIFO Empty Interrupt
010
Enable Channel 2 Sync Detected
Enable Channel 2 Tx FIFO Empty Interrupt
011
Enable Channel 3 Sync Detected
Enable Channel 3 Tx FIFO Empty Interrupt
100
Enable Channel 0 Rx FIFO Not Empty Interrupt
Enable Channel 0 Rx FIFO Almost Full Interrupt
101
Enable Channel 1 Rx FIFO Not Empty Interrupt
Enable Channel 1 Rx FIFO Almost Full Interrupt
110
Enable Channel 2 Rx FIFO Not Empty Interrupt
Enable Channel 2 Rx FIFO Almost Full Interrupt
111
Enable Channel 3 Rx FIFO Not Empty Interrupt
Enable Channel 3 Rx FIFO Almost Full Interrupt
D3..D7 Software Selectable
D8..D15 Reserved
3.1.5
SERIAL CONTROLLER REGISTERS
(Contact your local Zilog Represenative for Data books and User manuals in reference to the Z16C30, USC
Universal Serial Controller, for a more detailed description of the following registers, see also Related
Publications section of this document.
3.1.6.1 C
HANNEL
C
OMMAND
/A
DDRESS
R
EGISTER
(A
DDRESS
: 00000)
(same format for Channels 1..3 USC Control Registers)
3.1.6.1.1 Low WO: (Offset Address: 0x00)
D0 WO
Upper/Lower Byte Select (Always set to
Lower
for
proper operation of this board)
D1..D5 WO
Address 0 . .4
D6 WO
Byte/Word Access (Always set to
Byte
for proper
operation of this board)
D7 WO
DMA Continue