PCI-SIO4 User Manual
General Standards Corporation
8302A Whitesburg Drive Huntsville, AL 35802, Phone: (256) 880-8787
20
actual interrupt to the host will only occur if this interrupt source is enable in the
interrupt control register.
2.1.23 C
HANNEL
4
S
YNC
D
ETECT
:
(LOC
0
X
5C)
D0..7
Channel 4 Sync Detected Data
The data in this register is used to watch the Rx data as it is being loaded into the
main Rx FIFO. If the data being loaded into the FIFO for this channel matches
this data, then an interrupt request will be generated to the interrupt logic. An
actual interrupt to the host will only occur if this interrupt source is enable in the
interrupt control register.
2.1.24 I
NTERRUPT
C
ONTROL
:
(LOC
0
X
60)
D0
Enable Channel 1 Interrupt on Sync Detected
D1
Enable Channel 1 Interrupt on Tx FIFO Almost Empty
D2
Enable Channel 1 Interrupt on Rx FIFO Almost Full
D3
Enable Channel 1 Interrupt on USC Request Interrupt
D4
Enable Channel 2 Interrupt on Sync Detected
D5
Enable Channel 2 Interrupt on Tx FIFO Almost Empty
D6
Enable Channel 2 Interrupt on Rx FIFO Almost Full
D7
Enable Channel 2 Interrupt on USC Request
D8
Enable Channel 3 Interrupt on Sync Detected
D9
Enable Channel 3 Interrupt on Tx FIFO Almost Empty
D10
Enable Channel 3 Interrupt on Rx FIFO Almost Full
D11
Enable Channel 3 Interrupt on USC Request Interrupt
D12
Enable Channel 4 Interrupt on Sync Detected
D13
Enable Channel 4 Interrupt on Tx FIFO Almost Empty
D14
Enable Channel 4 Interrupt on Rx FIFO Almost Full
D15
Enable Channel 4 Interrupt on USC Request Interrupt
Note:
A ‘1’ in any of these positions will enable the corresponding interrupt source to perform a
PCI interrupt. A ‘0’ in any of these positions wi ll disable the corresponding interrupt
source from performing a PCI interrupt.
2.1.25 I
NTERRUPT
S
TATUS
:
(LOC
0
X
64)
D0
Status on Channel 1 Interrupt for Sync Detected
D1
Status on Channel 1 Interrupt for Tx FIFO Almost Empty
D2
Status on Channel 1 Interrupt for Rx FIFO Almost Full
D3
Status on Channel 1 Interrupt for USC Request Interrupt
D4
Status on Channel 2 Interrupt for Sync Detected
D5
Status on Channel 2 Interrupt for Tx FIFO Almost Empty
D6
Status on Channel 2 Interrupt for Rx FIFO Almost Full
D7
Status on Channel 2 Interrupt for USC Request
D8
Status on Channel 3 Interrupt for Sync Detected
D9
Status on Channel 3 Interrupt for Tx FIFO Almost Empty
D10
Status on Channel 3 Interrupt for Rx FIFO Almost Full
D11
Status on Channel 3 Interrupt for USC Request Interrupt
D12
Status on Channel 4 Interrupt for Sync Detected
D13
Status on Channel 4 Interrupt for Tx FIFO Almost Empty
D14
Status on Channel 4 Interrupt for Rx FIFO Almost Full