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參數(shù)資料
| 型號： | GL600USB-A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB MOUSE MICROCONTROLLER |
| 中文描述： | USB鼠標單片機 |
| 文件頁數(shù)： | 29/38頁 |
| 文件大?。?/td> | 352K |
| 代理商： | GL600USB-A |
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29
06/19/2000
GL600USB/GL600USB-A/GL600USB-B
Revision 1.3
5.6
Timer Interrupt
Because CPU may enter timer interrupt routine at any time, the timer interrupt routine should
backup all special registers at its entry point and restore them before return.
(Address 0x004)
TIMER_ENTRY:
MOV
A_TEMP, A
SWAPR
A, STATUS
BCR
STATUS, BS
MOV
S_TEMP, A
MOV
A, INDAR
MOV
I_TEMP, A
;
; Execute interrupt service routine
;
MOV
A, I_TEMP
MOV
INDAR, A
SWAPR
A, S_TEMP
MOV
STATUS, A
SWAPR
A_TEMP
SWAPR
A, A_TEMP
BCR
INTEN, TMROF
RETI
5.7
Conditional Branch
Example: Conditional branch can be according to value of Accumulator. Firmware can use this
method to return value for lookahead table. Because Accumulator is only 8 bits wide, the higher 3
bits of Program Counter should be load into PCHBUF before the conditional branch executed.
(Address 0x540)
LOOKAHEAD:
MOVIA
MOV
MOVIA
ADDAR
RETIA
RETIA
RETIA
.
.
.
0x05
PCHBUF, A
LOOKAHEAD_VAL
PCL, A
0
1
2
.
.
.
; Acc = 0
; Acc = 1
; Acc = 2
5.8
Change Register Bank
Usually keeps BS = 0. If firmware want to access register address 0x80 to 0x8F, set BS = 1. After
process register address 0x80 to 0x8F complete, clear BS = 0 to address 0x00 to 0x7F.
BSR
MOV
BCR
STATUS, BS
PORT1CON, A
STATUS, BS
相關PDF資料 |
PDF描述 |
|---|---|
| GL600USB-B | USB MOUSE MICROCONTROLLER |
| GL620USB | GeneLink-Lite USB PC-to-PC File Transfer Controller |
| GL641USB | USB ATA/ATAPI/ COMPACT FLASH CARD CONTROLLER |
| GL650USB | USB 4 PORT HUB CONTROLLER |
| GL651USB | 2-PORT USB KEYBOARD HUB CONTROLLER |
相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| GL600USB-B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB MOUSE MICROCONTROLLER |
| GL60209 | 制造商:Glenair Inc 功能描述:CONNECTOR - Bulk |
| GL602USB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB KEYBOARD MICROCONTROLLER |
| GL602USB-A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB KEYBOARD MICROCONTROLLER |
| GL603USB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB + PS/2 MOUSE MICROCONTROLLER |
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