ES1371 Datasheet, PDF (17/37 Pages) List of Unclassifed Manufacturers – ENSONIQ AudioPCI 97 digital controller

ENSONIQ Proprietary Information
Interrupt/Chip Select Status Register
Address 04H
Addressable as longword only
Power on reset value 7FFFFEC0H
Direct Mapped
Bit(s) R/W Name
Function
31
R INTR
This bit is the summary interrupt bit.
0 - No interrupt pending
1 - Interrupt from DAC1, DAC2, ADC, UART, CCB or power
management has occurred.
30:9 R ONES
These bits always read back as ones.
8
R SYNC_ERR
This bit indicates a synchronization error has occurred in the
CODEC interface module.
0 - CODEC synchronization error has not occurred.
1 - CODEC synchronization error has occurred.
7:6 R VC[1:0]
These bits are the voice code from the CCB module. These bits are
only valid if the CCB interrupt bit (mccb) is high.
00 - DAC1
01 - DAC2
10 - ADC
11 - Undefined
5
R MPWR
This bit indicates whether a power level interrupt has occurred.
0 - No Power Level interrupt.
1 - Power Level interrupt pending.
4
R MCCB
This bit is the masked CCB interrupt bit. A CCB interrupt will occur
if a PCI bus abort condition occurs during a voice buffer transfer.
The CCB interrupt is masked with the CCB interrupt mask bit
(ccb_intrm) in the control register.
0 - No CCB interrupt
1 - CCB interrupt pending
3
R UART
This bit is the UART interrupt bit.
0 - No UART interrupt
1 - UART interrupt pending
2
R DAC1
This is the DAC1 playback channel interrupt bit.
0 - No DAC1 channel interrupt
1 - DAC1 channel interrupt pending
1
R DAC2
This is the DAC2 playback channel interrupt bit.
0 - No DAC2 channel interrupt
1 - DAC2 channel interrupt pending
0
R ADC
This is the ADC record channel interrupt bit.
0 - No ADC channel interrupt
1 - ADC channel interrupt pending
ENSONIQ Proprietary Information
ENSONIQ AudioPCI 97 Specification Rev 1.1 Oct 1, 1997
17