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參數(shù)資料
| 型號(hào)： | HT9480 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Pager Controller |
| 中文描述： | 傳呼機(jī)控制器 |
| 文件頁數(shù)： | 26/57頁 |
| 文件大?。?/td> | 1541K |
| 代理商： | HT9480 |
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The function bits (ON, RE S) and indication
bits (CT, STB, BF, OR, BL and DR) are all
used to control the status of the decoder which
is operated through the pager control address
as described in the following table.
Pager data address
The pager data address (1FH) are the parallel
data lines for decoder data transfer.
Symbol
Bit
R /W
Description
ON
0
R/W
On/Off control bit
This bit selects the ON or STANDBY state of the decoder.
0: ON state
1: STANDBY state
RE S
1
R/W
Reset output for the decoder core
The
μ
C has to set the RE S bit low and then high after the pager controller
is turned on.
CT
2
R
Call termination indication bit
This bit decides the call termination status, when a valid code-word is
received
0: End of code-word receive
1: Receiving message code-word
STB
3
R
Standby indication bit
When the value of the ON bit is 1, the system goes into the STANDBY state.
The STANDBY state allows the
μ
C to execute the configuration RAM setting.
BF
4
R
Battery fail indication bit
Once the decoder detects that the battery fail interrupt is low, the BF bit
will be low but unlatched.
OR
5
R
Out-of-range indication bit
Whenever the decoder detects an out-of-range condition, this bit is cleared
low after end of the programmed out-of-range hold of time that is selected
by the configuration registers (SPF06 and SPF07). The out-of-range
indication may be tested for an out-of-range condition whenever the
interface enable of the decoder is active; otherwise the OR is normally
high. The out-of-range indication is set high by detection of a valid data
transmission or by switching the decoder to be in the STANDBY state.
BL
6
R/W
Battery low indication bit
The battery low indication is periodically tested for a battery low condition.
If the decoder encounters a battery low condition the battery low indication
bit is cleared low. At this time, the
μ
C should set the BL bit high.
DR
7
R/W
Data ready interrupt indication bit
When a valid call is detected, data starts transfer. The DR bit becomes low
when the serial data is changed to parallel data (1FH). After reading the
parallel data, the
μ
C software has to set the DR bit high.
HT9480
26
23th Feb ’98
相關(guān)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(guān)代理商/技術(shù)參數(shù) |
參數(shù)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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