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參數資料
| 型號： | HT9480 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Pager Controller |
| 中文描述： | 傳呼機控制器 |
| 文件頁數： | 31/57頁 |
| 文件大小： | 1541K |
| 代理商： | HT9480 |
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Error indication
After error correction, any code-word contain-
ing more than two bits random error or four bits
burst error (option) in address or message code-
word may be indicated from the error flag posi-
tion.
Data transfer
Data transfer is initiated once the code-word is
already received. When the HT9480 is ready to
transfer the received call data, an external in-
terrupt will be generated via output INT. Any
message data can be read by accessing the 1FH
address of the
μ
C RAM map via the
μ
C internal
bus.
The address word indicates call address, func-
tion bit setting, and decoder flags. The message
code-words are received and concatenated to a
valid call address word. The message words
derived from un-corrected message code-words.
Data transfer for a received call ends right after
the termination word is transferred.
Address word format
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Sync.
State
Call
address
Dup.
Call
0
Function
code
Bit 0: Bit 21 of the address code-word
Bit 1: Bit 20 of the address code-word
Bit 2=0 is to tell the difference between termi-
nation and address word format
Bit 3=1 if a duplicate code-word.
Bit 6
Bit 5
Bit 4
Call Address
0
0
0
RIC A
0
0
1
RIC B
0
1
0
RIC C
0
1
1
RIC D
1
0
0
RIC E
1
0
1
RIC F
1
1
0
—
1
1
1
—
Bit 7= 1 if an address code-word is received in
the data fail mode.
Interrupt indication
The HT9480 provides an internal data ready
interrupt and a battery fail interrupt. The in-
ternal data ready interrupt and battery fail
interrupt share the same pin connection.
Checking the battery fail interrupt bit (BF; bit
4 of 1EH) and the data ready interrupt bit (DR;
bit 7 of 1 E H) will tell which type of interrupt
has occurred. Both interrupt bits are active
low.
Out-of-range indication
The out-of-range condition occurs when the
time interval defined by SPF06, SPF07 does not
receive any preamble or sync code word. This
signal will be used as “loss of RF signal” indica-
tor.
HT9480
31
23th Feb ’98
相關PDF資料 |
PDF描述 |
|---|---|
| HT95168 | Caller ID Telephone IC |
| HT9580 | Character Pager Controller |
| HT95A30P | 8-Bit LCD Type Phone Controller MCU |
| HT95L300 | 8-Bit LCD Type Phone Controller MCU |
| HT95A20P | 8-Bit LCD Type Phone Controller MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT9480_02 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit Numerical Pager Controller MCU |
| HT94804 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Numeric Pager Controller ??(Simplified Chinese Version Only) |
| HT-95 | 制造商:FCI 功能描述:RATCHET CRIMP TOOL 制造商:FCI 功能描述:RATCHET CRIMP TOOL; Crimp Size:32AWG to 22AWG; For Use With:Crimp-to-Wire PV Receptacles & Pins ;RoHS Compliant: NA |
| HT95168 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Caller ID Telephone IC |
| HT9580 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Character Pager Controller |
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