TL16PNP200

STANDALONE PLUGANDPLAY (PnP) CONTROLLER

SLLS229A − NOVEMBER 1995 − REVISED APRIL 1996

8

POST OFFICE BOX 655303

POST OFFICE BOX 1443

default format (continued)

The formats for the coded fields are as follows:

Table 2. I/O Block Size

CODE

BLOCK SIZE

ADDRESS BITS

DECODED

000

1 byte

15-0

001

2 bytes

15-1

010

4 bytes

15-2

011

8 bytes

15-3

100

16 bytes

15-4

101

32 bytes

15-5

110

64 bytes

15-6

Table 3. OEN0 Configuration - Mode 0

CODE

LOGICAL DEVICE

000

LD0

001

LD1

010

LD0 or LD1

Table 4. OEN0 and OEN1 Configuration - Mode 1

CODE

LOGICAL DEVICE

000

LD0

001

LD1

010

LD2

011

LD3

100

LD4

The IRQ level field is the IRQ level number (e.g. 0011 for IRQ3, 0100 for IRQ4, ... etc.), and the DMA channel

field is the DMA channel number (e.g. 000 for DMA channel 0, 001 for DMA channel 1, ... etc.). The LDn Active

bits should be set to 1 when device n is required to be active on power-up or after reset, otherwise it is cleared

to 0. The mode bit should be 0 for Mode 0 operation and 1 for Mode 1 operation.

The DMA mapping fields tell the TL16PNP200 which ISA DMA channels are connected to the device. For

example, in Mode 0 any three ISA DMA channels can be connected to the device. When DMA channels 0, 3,

and 5 are connected to CDRQ0/CDACK0, CDRQ1/CDACK1, and CDRQ2/CDACK2, respectively, then DMA

0 mapping field should be 000, DMA 1 mapping field should be 011, and DMA 2 mapping field should be 101.