EZ-USB FX2で　HID入出力が出来ない

###前提・実現したいこと

EZ-USB FX2LPを使用してHIDで入出力をしたい

###発生している問題・エラーメッセージ
PC側でHID認識まではできて、PC側での入力はできるのですが
PCからの出力を受け付けてくれない。

PC側出力はWritefile()にて行っていますがコールすると返ってきません。
(ハングアップ状態になります)
CreateFile()は正常にオープンしています。
今までいろいろと試してみて予測としてはEZ-USB FX2の
ENDPOINTのレジスタ設定あたりが良くないのだと思っていますが
調査しても資料が少なくお手上げ状態です。
どなたかご存知助言をお願いいたします。

###該当のソースコード

8051 アセンブラ ディスクリプタ設定部分

;;-----------------------------------------------------------------------------
;; File: dscr.a51
;; Contents: This file contains descriptor data tables.
;;
;; Copyright (c) 1997 AnchorChips, 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
DSCR_DEVQUAL equ 6 ;; Descriptor type: Device Qualifier

DSCR_DEVICE_LEN equ 18
DSCR_CONFIG_LEN equ 9
DSCR_INTRFC_LEN equ 9
DSCR_ENDPNT_LEN equ 7
DSCR_DEVQUAL_LEN equ 10

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, DeviceQualDscr, HighSpeedConfigDscr, FullSpeedConfigDscr, StringDscr, UserDscr

public hidDscr,ReportDscr,ReportDscrEnd

DSCR SEGMENT CODE PAGE

;;-----------------------------------------------------------------------------
;; Global Variables
;;-----------------------------------------------------------------------------
rseg DSCR ;; locate the descriptor table in on-part memory.

DeviceDscr:
db DSCR_DEVICE_LEN ;; Descriptor length
db DSCR_DEVICE ;; Decriptor type
dw 0002H ;; Specification Version (BCD)
db 00H ;; Device class
db 00H ;; Device sub-class
db 00H ;; Device sub-sub-class
db 64 ;; Maximum packet size
dw 3412H ;; Vendor ID
dw 7856H ;; Product ID (Sample Device)
dw 0000H ;; Product version ID
db 1 ;; Manufacturer string index
db 2 ;; Product string index
db 0 ;; Serial number string index
db 1 ;; Number of configurations

DeviceQualDscr:
db DSCR_DEVQUAL_LEN ;; Descriptor length
db DSCR_DEVQUAL ;; Decriptor type
dw 0002H ;; Specification Version (BCD)
db 00H ;; Device class
db 00H ;; Device sub-class
db 00H ;; Device sub-sub-class
db 64 ;; Maximum packet size
db 1 ;; Number of configurations
db 0 ;; Reserved

HighSpeedConfigDscr:
db DSCR_CONFIG_LEN ;; Descriptor length
db DSCR_CONFIG ;; Descriptor type
db (HighSpeedConfigDscrEnd-HighSpeedConfigDscr) mod 256 ;; Total Length (LSB)
db (HighSpeedConfigDscrEnd-HighSpeedConfigDscr) / 256 ;; Total Length (MSB)
db 1 ;; Number of interfaces
db 1 ;; Configuration number
db 0 ;; Configuration string
db 11000000b ;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu)
db 50 ;; Power requirement (div 2 ma)

;; Interface Descriptor
db DSCR_INTRFC_LEN ;; Descriptor length
db DSCR_INTRFC ;; Descriptor type
db 0 ;; Zero-based index of this interface
db 0 ;; Alternate setting
db 1 ;; Number of end points
db 03H ;; Interface class
db 00H ;; Interface sub class
db 00H ;; Interface sub sub class
db 0 ;; Interface descriptor string index

;; HID Descriptor
hidDscr:
db 9 ;; length of this desc.
db 21h ;; HID descriptor
db 10h ;;
db 01h ;; version
db 00h ;; Country Code (not use)
db 01h ;; Num HID descriptor (1)
db 22h ;; report descriptor
db ReportDscrEnd-ReportDscr
db 0 ;; HID descriptor size

;; Endpoint Descriptor
db DSCR_ENDPNT_LEN ;; Descriptor length
db DSCR_ENDPNT ;; Descriptor type
db 01H ;; Endpoint number, and direction
db ET_INT ;; Endpoint type
db 40H ;; Maximun packet size (LSB)
db 00H ;; Max packect size (MSB)
db 10H ;; Polling interval

HighSpeedConfigDscrEnd:

FullSpeedConfigDscr:
db DSCR_CONFIG_LEN ;; Descriptor length
db DSCR_CONFIG ;; Descriptor type
db (FullSpeedConfigDscrEnd-FullSpeedConfigDscr) mod 256 ;; Total Length (LSB)
db (FullSpeedConfigDscrEnd-FullSpeedConfigDscr) / 256 ;; Total Length (MSB)
db 1 ;; Number of interfaces
db 1 ;; Configuration number
db 0 ;; Configuration string
db 11000000b ;; Attributes (b7 - buspwr, b6 - selfpwr, b5 - rwu)
db 50 ;; Power requirement (div 2 ma)

;; HID Descriptor
db 9 ;; length of this desc.
db 21h ;; HID descriptor
db 10h ;;
db 01h ;; version
db 00h ;; Country Code (not use)
db 01h ;; Num HID descriptor (1)
db 22h ;; report descriptor
db ReportDscrEnd-ReportDscr
db 0 ;; HID descriptor size

;; Endpoint Descriptor
db DSCR_ENDPNT_LEN ;; Descriptor length
db DSCR_ENDPNT ;; Descriptor type
db 81H ;; Endpoint number, and direction
db ET_INT ;; Endpoint type
db 40H ;; Maximun packet size (LSB)
db 00H ;; Max packect size (MSB)
db 10H ;; Polling interval
;; Endpoint Descriptor
db DSCR_ENDPNT_LEN ;; Descriptor length
db DSCR_ENDPNT ;; Descriptor type
db 01H ;; Endpoint number, and direction
db ET_INT ;; Endpoint type
db 40H ;; Maximun packet size (LSB)
db 00H ;; Max packect size (MSB)
db 10H ;; Polling interval

FullSpeedConfigDscrEnd:

ReportDscr:
db 06h ; Usage Page = 0xFF00 (Vendor Defined Page 1)
db 00h, 0FFh ; Usage Page = 0xFF00 (Vendor Defined Page 1)
db 09h, 01h ; Usage (Vendor Usage 1)
db 0A1h, 01h ; Collection (Application)
db 19h, 01h ; Usage Page (Key codes)
db 29h, 10h ; Usage minimum (234)
db 15h, 01h ; Logical minimum (0)
db 25h, 10h ; Logical maximum (1)
db 75h, 08h ; Report size (1)
db 95h, 10h ; Report count (8)
db 81h, 00h ; Input (data, variable, absolute)
db 19h, 01h ; Usage minimum (1)
db 29h, 10h ; Usage maximum (5)
db 91h, 00h ; Output (data, variable, absolute)
db 0C0h ; End Collection
ReportDscrEnd:

;; db 00H ;; WORD ALIGN

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 'M',00
db 'y',00
db 'N',00
db 'a',00
db 'm',00
db 'e',00
StringDscr1End:

StringDscr2:
db StringDscr2End-StringDscr2 ;; String Descriptor length
db DSCR_STRING
db 'T',00
db 'E',00
db 'S',00
db 'T',00
db '',00
db '',00
db '',00
db '',00
StringDscr2End: