CS8920 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS8920

Crystal LAN™ Ethernet Controller Technical Reference Manual

Cirrus Logic 

CS8920 Technical Reference Manual

DB 0x01

DB 0x00

DB 0x02

DB 0x60

DB 0x03

DB 0x10

DB 0x10

; Decode 16-bit ISA addresses

; Bits 7:0 of IO base min address

; Bits 15:8 OF IO base min address

; Bits 7:0 of IO base max address

; Bits 15:8 OF IO base max address

; 16 ports needed

; IO base paragraph aligned

;-------------------------------------------------------------

; Memory Descriptor 0, 16K Boot ROM

;-------------------------------------------------------------

DB 0x81

; Large Item, Memory Descriptor 0

DB 0x09

; Descriptor length = 9 bytes

DB 0x00

DB 0x40

; 8-bit ROM, non-shadowable, non-cacheable

DB 0x80

DB 0x0C

; Min Base Address = 0xC8000

DB 0x00

DB 0x0F

; Max Base Address = 0xF0000

DB 0x00

DB 0x20

; Base Alignment

DB 0x40

DB 0x00

; Range Length

;-------------------------------------------------------------

; Memory Descriptor 1 - 4K Shared Memory (RAM)

;-------------------------------------------------------------

DB 0x81

; Large Item, Memory Descriptor 1

DB 0x09

; Descriptor length = 9 bytes

Figure 3.4.1. Example PnP Resource Data Record (part 3 of 4)

AN84REV1

51

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