Specifications
ESS Technology, Inc. SAM0023-122898 35
ES1869 DATA SHEET
PNP CONFIGURATION AND REGISTERS
I/O Decoder 0 Base Address (60h, R/W)
I/O base address, bits 11:8. Two locations.
I/O Decoder 0 Base Address (61h, R/W)
I/O base address, bits 7:0.
Interrupt Request MPU Select (70h, R/W)
Interrupt request MPU select.
Bit Definitions:
Interrupt Request Type Select 0 (71h, R)
Interrupt request type select 0. Returns 2 (low-to-high
transition).
LDN 4: CD-ROM Device
The CD-ROM Device is optional. If present, it is LDN 3 or 4.
Activate (30h, R/W)
After reset or after a 1 is written to the reset bit in the card’s
configuration control bit, the default for this register is 0.
Bit Definitions:
I/O Range Check (31h, R)
This register verifies that the I/O range assigned to a
logical device does not conflict with the I/O range used by
another device.
Bit Definitions:
I/O Decoder 0 Base Address (60h, R/W)
I/O base address of first address range, bits 11:8.
Eight locations.
I/O Decoder 0 Base Address (61h, R/W)
I/O base address of first address range, bits 7:0.
I/O Decoder 1 Base Address (62h, R/W)
I/O base address of second address range, bits 11:8.
Two locations.
I/O Decoder 1 Base Address (63h, R/W)
I/O base address of second address range, bits 7:0.
Interrupt Request CD-ROM Select (70h, R/W)
Interrupt request CD-ROM select.
Bit Definitions:
Interrupt Request Type Select 0 (71h, R)
Interrupt request type select 0. Returns 2 (low-to-high
transition).
DMA Channel Select for CD-ROM (74h, R)
0 0 0 0 A[11:8]
7 6 5 4 3 2 1 0
A[7:0]
7 6 5 4 3 2 1 0
0 0 0 0 Data
7 6 5 4 3 2 1 0
Bits Name Description
3:0 Data Select which interrupt used for MPU IRQ.
0 0 0 0 0 0 1 0
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 Activate
7 6 5 4 3 2 1 0
Bits Name Description
0 Activate 1 = Activate.
0 = Deactivate (default).
0 0 0 0 0 0 Enable range check Pattern select
7 6 5 4 3 2 1 0
Bits Name Description
1 Enable
range
check
1 = Enable range check.
0 = Disable.
0 Pattern
select
1 = 55h.
0 = AAh.
0 0 0 0 A[11:8]
7 6 5 4 3 2 1 0
A[7:0]
7 6 5 4 3 2 1 0
0 0 0 0 A[11:8]
7 6 5 4 3 2 1 0
A[7:0]
7 6 5 4 3 2 1 0
0 0 0 0 Data
7 6 5 4 3 2 1 0
Bits Name Description
3:0 Data Select which interrupt used for CD-ROM IRQ.
0 0 0 0 0 0 1 0
7 6 5 4 3 2 1 0
0 0 0 0 0 Data