ht82a821r Holtek Semiconductor Inc., ht82a821r Datasheet - Page 12

• Manufacturer Part Number: ht82a821r
• Description: Ht82a821r -- Usb Audio Mcu
• Manufacturer: Holtek Semiconductor Inc.

The functional unit chip reset status are shown below.
The registers status are summarized in the following table.
Note:
Rev. 1.10
Program Counter
Interrupt
WDT
Timer/event Counter
Input/output Ports
Stack Pointer
MP0
MP1
ACC
Program
Counter
TBLP
TBLH
WDTS
STATUS
INTC0
TMR0H
TMR0L
TMR0C
TMR1H
TMR1L
TMR1C
PA
PAC
USC
USR
UCC
AWR
STALL
SIES
MISC
SETIO
FIFO0
FIFO1
FIFO2
DAC_LIMIT_L
DAC_LIMIT_H
DAC_WR
Register
* stands for warm reset
u stands for unchanged
x stands for unknown
_ stands for undefined
(Power On)
0000 0111
1111 1111
1111 1111
1000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-000 0000
00-0 1000
xxxx x010
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
-xxx xxxx
--00 xxxx
00-0 1---
Reset
000H
Operation)
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
0000 0000
uuxx uuuu
-uuu uuuu
-000 0000
00-0 1000
xxxx x010
--1u uuuu
Time-out
(Normal
00-0 1---
000H
WDT
000H
Disable
Clear. After master reset,WDT begins counting
Off
Input mode
Points to the top of the stack
RES Reset
Operation)
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
0000 0000
10xx 0000
-uuu uuuu
-000 0000
00-0 1000
xxxx x010
--uu uuuu
00-0 1---
(Normal
000H
12
RES Reset
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0000
0000 0000
0000 0000
-uuu uuuu
-000 0000
00-0 1000
10xx 0000
xxxx x010
--01 uuuu
00-0 1---
(HALT)
000H
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
10xx uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
-uuu uuuu
-uuu uuuu
uu-u uuuu
Time-Out
uuuu uuuu
xxxx x010
--11 uuuu
uu-u u---
(HALT)*
000H
WDT
USB-Reset
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
1000 0u00
00uu 0000
0u00 u000
0000 0000
0000 0000
0u00 u000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-uuu uuuu
-000 0000
00-0 1000
xxxx x010
--uu uuuu
(Normal)
00-0 1---
000H
HT82A821R
June 29, 2007
USB-Reset
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
0000 0111
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
1111 1111
1111 1111
1000 0u00
00uu 0000
0u00 u000
0000 0000
0000 0000
0u00 u000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
-uuu uuuu
-000 0000
00-0 1000
xxxx x010
--01 uuuu
00-0 1---
(HALT)
000H