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參數資料
| 型號： | HT9580 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Character Pager Controller |
| 中文描述： | 字符傳呼機控制器 |
| 文件頁數： | 39/63頁 |
| 文件大小： | 444K |
| 代理商： | HT9580 |
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R.F. timing chart
HT9580
39
April 28, 2000
Preliminary
Out-of-range indication
The out-of-range condition occurs when the
time interval defined by SPF06, SPF07 is un-
able to receive sync code words. If sync code
words are detected, the timer counter defined
by SPF06, SPF07 will reset. This signal will
be seen as a loss of RF signal indication and
the power on reset is in an out-of-range condi-
tion until the sync code word is detected.
Duplicate call suppression
The HT9580 provides a duplicate call sup-
pression with time-out facility, to identify du-
plicate call reception. In the display pager
mode, duplicate call indication is achieved
only via the C interface. Acall is assumed to
be a duplicate if its latest address and func-
tion bit setting is equal to the previous re-
ceived call within the time interval defined by
SPF06, SPF07.
Receiver, Quick charge and PLL signal control
Pager receiver, quick charge circuit, and RF
PLL circuit can be controlled independently
via enable outputs BS1, BS2, and BS3 respec-
tively. Their operating period are optimized
according to the synchronization mode of the
decoder. Each enable signal has its own pro-
grammable establishment time.
Receiver Establishment
Time T
BS1
Option
512 bps
1200/2400 bps
SPF00 SPF01
7.81ms
53.33ms
0
0
15.63ms
6.67ms
0
1
31.25ms
13.33ms
1
0
62.50ms
26.67ms
1
1
Quick Charge
Adjustment Time T
BS2
Option
512 bps
1200/2400 bps
SPF02 SPF03
7.81ms
1.67ms
0
0
15.63ms
6.67ms
0
1
15.63ms
11.67ms
1
0
19.53ms
13.33ms
1
1
PLL Establishment Time
T
BS3
Option
512 bps
1200/2400 bps
SPF04 SPF05
0ms
0ms
0
0
31.25ms
26.67ms
0
1
46.87ms
40.00ms
1
0
62.50ms
53.33ms
1
1
)
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