Specifications

32 SAM0023-122898 ESS Technology, Inc.
ES1869 DATA SHEET
PNP CONFIGURATION AND REGISTERS
LDN 0: Configuration Device
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)
This register is used to assign an I/O base address to I/O
decoder 0 of the logical device. I/O base address, bits
11:8.
I/O Decoder 0 Base Address (61h, R)
I/O base address, bits 7:3.
DMA Channel Select 0 (74h, R)
Returns 4 (no DMA channel selected).
Bit Definitions:
DMA Channel Select 1 (75h, R)
Returns 4 (no DMA channel selected).
31h I/O Range Check.
60h I/O base address, bits 11:8. If zero, this device is
disabled. Two locations.
61h I/O base address, bits 7:0.
70h Interrupt Request MPU Select.
71h Interrupt Request Type Select 0 (returns 2).
LDN 3 or 4 (optional) CD-ROM device
30h Activate; bit 0 is activate bit.
31h I/O Range Check.
60h I/O base address of 1st address range, bits 11:8. If
zero, this device is not accessible. Eight locations.
61h I/O base address of 1st address range, bits 7:0.
62h I/O base address of 2nd address range, bits 11:8. If
zero, this device is not accessible. Two locations.
63h I/O base address of 2nd address range, bits 7:0.
70h Interrupt Request CD-ROM Select.
71h Interrupt Request Type Select 0 (returns 2).
74h DMA Channel Select for CD-ROM (default = 4).
LDN 3, 4, or 5 (optional) Modem device
30h Activate; bit 0 is activate bit.
31h I/O Range Check.
60h I/O base address, bits 11:8. If zero, this device is not
accessible. Eight locations.
61h I/O base address, bits 7:0.
70h Interrupt Request Modem Select.
71h Interrupt Request Type Select 0 (returns 2).
74h DMA Channel Select for Modem (default = 4).
LDN 3, 4, 5, or 6
(optional)
General-Purpose device
30h Activate; bit 0 is activate bit.
31h I/O Range Check.
60h I/O base address, bits 11:8. If zero, this device is not
accessible. Four, eight, or sixteen locations.
61h I/O base address, bits 7:0.
70h Interrupt Request General-Purpose Device Select.
71h Interrupt Request Type Select 0 (returns 2).
74h DMA Channel Select for General-Purpose Device
(default = 4).
0 0 0 0 0 0 0 Activate
7 6 5 4 3 2 1 0
Table 11 Logical Device Summary (Continued)
LDN # Device
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[7:3] 0 0 0
7 6 5 4 3 2 1 0
0 0 0 0 0 Data
7 6 5 4 3 2 1 0
Bits Name Description
2:0 Data Select which channel is in use for DMA 0.
0 0 0 0 0 Data
7 6 5 4 3 2 1 0