參數(shù)資料
型號(hào)： 935262056518
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 尋呼電路
英文描述： TELECOM, PAGING DECODER, PQFP32
封裝： 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-358-1, LQFP-32
文件頁(yè)數(shù)： 27/76頁(yè)
文件大?。?/td> 301K
代理商： 935262056518
1999 Apr 12
33
Philips Semiconductors
Product specication
FLEX
roaming decoder II
PCD5013
8.5.8
RECEIVER SHUT-DOWN SEQUENCE
The PCD5013 allows up to 3 steps associated with
shutting down the receiver. When the PCD5013 decides to
turn off the receiver, the first shut-down setting, if enabled,
is applied to the receiver control lines for the
corresponding shut-down time. At the end of the last used
shut-down time, the receiver off setting is applied to the
receiver control lines. If the first shut-down setting is not
enabled, the PCD5013 switches directly from the
receiver on to the receiver off setting.
Figure 15 shows the receiver shut-down sequence when
all shut-down settings are enabled. If the receiver is on or
being warmed up when the decoder is turned off (by
clearing the ON bit in the control packet), the PCD5013
immediately executes the receiver shut-down sequence.
If the PCD5013 is executing the shut-down sequence
when turned on (with the ON bit in the control packet set)
the PCD5013 completes the shut-down sequence before
starting the warm-up sequence.
8.5.8.1
Receiver shut-down setting packets
(ID = 1AH to 1BH)
SE: step enable (Table 28). The receiver setting is
enabled when the bit is set. If the bit is cleared then that
step in the receiver shut-down sequence is disabled and
all following steps are ignored. Value after reset = 0.
LBC: low battery check (Table 28). If this bit is set, the
PCD5013 checks the status of the LOBAT port just before
leaving this receiver shut-down state. Value after
reset = 0.
CLS: control line setting (Table 28). This is the value to be
output on the receiver control lines (S0 to S7) for this
receiver shut-down state. Value after reset = 0.
ST: step time (Table 28). This sets the duration time for
receiver shut-down, until the next receiver state.
The setting is in steps of 625
s. Valid values are
625
s (ST = 01H) to 39.375 ms (ST = 3FH). Value after
reset = 01H.
s: setting number, see Tables 27 and 28 for the s names
and values and location in the receiver shut-down packet.
Table 27 s names and values
s
SETTING NAME
0
shut-down 1
1
shut-down 2
Table 28 Receiver shut-down stages
BYTE
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
30001101
s
2SE0
0
LBC
0
1
CLS7
CLS6
CLS5
CLS4
CLS3
CLS2
CLS1
CLS0
000
ST5
ST4
ST3
ST2
ST1
ST0
Fig.15 Receiver shut-down sequence.
handbook, full pagewidth
MGK267
receiver
control
line setting
shut down
time 1
shut down
setting 1
shut down
time 2
shut down
setting 2
possible
LOBAT
check
off
possible
LOBAT
check
possible
LOBAT
check
1600 sps or 3200 sps
sync or data setting
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