TL16PNP200 Datasheet, PDF (8/23 Pages) Texas Instruments – STANDALONE PLUG-AND-PLAY (PnP) CONTROLLER

TL16PNP200
STANDALONE PLUGĆANDĆPLAY (PnP) CONTROLLER
SLLS229A − NOVEMBER 1995 − REVISED APRIL 1996
default format (continued)
The formats for the coded fields are as follows:
Table 2. I/O Block Size
CODE
000
001
010
011
100
101
110
BLOCK SIZE
1 byte
2 bytes
4 bytes
8 bytes
16 bytes
32 bytes
64 bytes
ADDRESS BITS
DECODED
15-0
15-1
15-2
15-3
15-4
15-5
15-6
Table 3. OEN0 Configuration - Mode 0
CODE
000
001
010
LOGICAL DEVICE
LD0
LD1
LD0 or LD1
Table 4. OEN0 and OEN1 Configuration - Mode 1
CODE
000
001
010
011
100
LOGICAL DEVICE
LD0
LD1
LD2
LD3
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.
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