dscr.a51

usb serial converter

;;-----------------------------------------------------------------------------
;;	File:		dscr.a51
;;	Contents:	This file contains descriptor data tables for the Cypress USB-Serial Bridge  
;;
;;	Copyright (c) 2001 Cypress Semiconductor, Inc. All rights reserved
;;-----------------------------------------------------------------------------

DSCR_DEVICE	equ	1	;; Descriptor type: Device
DSCR_CONFIG	equ	2	;; Descriptor type: Configuration
DSCR_STRING	equ	3	;; Descriptor type: String
DSCR_INTRFC	equ	4	;; Descriptor type: Interface
DSCR_ENDPNT	equ	5	;; Descriptor type: Endpoint

ET_CONTROL	equ	0	;; Endpoint type: Control
ET_ISO		equ	1	;; Endpoint type: Isochronous
ET_BULK		equ	2	;; Endpoint type: Bulk
ET_INT		equ	3	;; Endpoint type: Interrupt

public		DeviceDscr, ConfigDscr, StringDscr, UserDscr, HIDDscr, ReportDscr, ReportDscrEnd

DSCR	SEGMENT	CODE

;;-----------------------------------------------------------------------------
;; Global Variables
;;-----------------------------------------------------------------------------
;; Note: This segment must be located in on-part memory.
		rseg DSCR				;; locate the descriptor table anywhere below 8K
DeviceDscr:	db	deviceDscrEnd-DeviceDscr	;; Descriptor length
		db	DSCR_DEVICE			;; Decriptor type
		dw	1001H				;; Specification Version (BCD)
		db	00H  				;; Device class
		db	00H				;; Device sub-class
		db	00H				;; Device sub-sub-class
		db	40H				;; Maximum packet size
		dw	0B404H				;; Vendor ID
		dw	0255H				;; Product ID - set to default example ID
		dw	0100H				;; Product version ID
		db	1				;; Manufacturer string index
		db	2				;; Product string index
		db	0				;; Serial number string index
		db	1				;; Number of configurations
deviceDscrEnd:

ConfigDscr:	db	ConfigDscrEnd-ConfigDscr	;; Descriptor length
		db	DSCR_CONFIG			;; Descriptor type
		db	StringDscr-ConfigDscr		;; Configuration + End Points length (LSB)
		db	(StringDscr-ConfigDscr)/256	;; Configuration + End Points length (MSB)
		db	1				;; Number of interfaces
		db	1				;; Interface number
		db	0				;; Configuration string
		db	10000000b			;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu)
		db	0FAH				;; Power requirement (div 2 ma)
ConfigDscrEnd:

IntrfcDscr:
		db	IntrfcDscrEnd-IntrfcDscr	;; Descriptor length
		db	DSCR_INTRFC			;; Descriptor type
		db	0				;; Zero-based index of this interface
		db	0				;; Alternate setting
		db	2				;; Number of end points 
		db	03H				;; Interface class (HID)
		db	00H				;; Interface sub class
		db	00H				;; Interface sub sub class
		db	05H				;; Interface descriptor string index
IntrfcDscrEnd:
		
HIDDscr:	
		db	09h				;; length
		db	21h				;; type: HID
		dw	1001h				;; release: HID class rev 1.1
		db	00h				;; country code (USA)
		db	01h				;; number of HID class descriptors to follow
		db	22h				;; report descriptor type (HID)
		db	(ReportDscrEnd-ReportDscr) 	;; length of HID descriptor
		db	00h
HIDDscrEnd:

Ep1InDscr:
		db	Ep1InDscrEnd-Ep1InDscr		;; Descriptor length
		db	DSCR_ENDPNT			;; Descriptor type
		db	81H				;; Endpoint number, and direction
		db	ET_INT				;; Endpoint type
		db	40H				;; Maximum packet size (LSB)
		db	00H				;; Max packet size (MSB)
		db	1				;; Polling interval (ms)
Ep1InDscrEnd:

Ep2OutDscr:
		db	Ep2OutDscrEnd-Ep2OutDscr	;; Descriptor length
		db	DSCR_ENDPNT			;; Descriptor type
		db	02H				;; Endpoint number, and direction
		db	ET_INT				;; Endpoint type
		db	40H				;; Maximum packet size (LSB)
		db	00H				;; Max packet size (MSB)
		db	1				;; Polling interval (ms)
Ep2OutDscrEnd:

ReportDscr:
	db 06h, 0A0h, 0FFh 	;; Usage Page (FFA0H = vendor defined)
	db 09h, 01h        	;; Usage (vendor defined)
	db 0A1h, 01h       	;; Collection (Application)
;; The input report
	db 09h, 01h        	;; Usage (vendor defined)
	db 15h, 00h	   	;; Logical minimum (0)
	db 25h, 0FFh	   	;; Logical maximum (255)
	db 75h, 08h	   	;; Report size (8 bits)
	db 95h, 40h	   	;; Report count (64 fields)
	db 81h, 02h	   	;; Input (Data, variable, absolute)
;; The output report
	db 09h, 02h	   	;; Usage (vendor defined)
	db 75h, 08h	   	;; Report size (8 bits)
	db 95h, 40h	   	;; Report count (64 fields)
	db 91h, 02h	   	;; Output (Data, Variable, Absolute)
;; The feature report
	db 09h, 03h	   	;; Usage Page (vendor defined)
	db 75h, 08h	   	;; Report size (8 bits)
	db 95h, 05h	   	;; Report count (5 fields)
	db 0B1h, 02h	   	;; Output (Data, variable, absolute)
	
	db 0C0h            	;; End Collection
ReportDscrEnd:

StringDscr:
StringDscr0:
		db	StringDscr0End-StringDscr0	;; String descriptor length
		db	DSCR_STRING
		db	09H,04H
StringDscr0End:

StringDscr1:	
		db	StringDscr1End-StringDscr1	;; String descriptor length
		db	DSCR_STRING
		db	'C',00
		db	'y',00
		db	'p',00
		db	'r',00
		db	'e',00
		db	's',00
		db	's',00
	
StringDscr1End:

StringDscr2:	
		db	StringDscr2End-StringDscr2	;; Descriptor length
		db	DSCR_STRING
		db	'C',00
		db	'y',00
		db	'p',00
		db	'r',00
		db	'e',00
		db	's',00
		db	's',00
		db	' ',00
		db	'U',00
		db	'S',00
		db	'B',00
		db	'-',00
		db	'S',00
		db	'e',00
		db	'r',00
		db	'i',00
		db	'a',00
		db	'l',00
		db	' ',00
		db	'B',00
		db	'r',00
		db	'i',00
		db	'd',00
		db	'g',00
		db	'e',00

StringDscr2End:

UserDscr:		
		dw	0000H
		end