參數(shù)資料
型號(hào)： 935260577557
廠商： NXP SEMICONDUCTORS
元件分類： 無(wú)繩電話/電話
英文描述： TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100
封裝： PLASTIC, SOT-407, LQFP-100
文件頁(yè)數(shù)： 25/59頁(yè)
文件大小： 781K
代理商： 935260577557
1999 Jun 04
31
Philips Semiconductors
Product specication
Global Positioning System (GPS)
baseband processor
SAA1575HL
Notes
1. For default DCMS operation.
2. The 1 s pulse output is only valid when at least one channel is locked.
Table 4
Explanation of symbol characters in Chapter “AC characteristics”
External data memory write; see Fig.19
tAVAU
address valid time
164.7
ns
tWLDL
WRH and WRL asserted to DMCS asserted
note 1
2.0
4.0
ns
tW(DMCS)
DMCS pulse width
65.7
ns
tWHDH
WRH and WRL de-asserted to DMCS
de-asserted
2.0
4.0
ns
tAVWL
address valid to WRH and WRL asserted
63.7
ns
tWLWH
WRH and WRL pulse width
64.7
65.7
ns
tAVQV
address valid to data valid
67.7
ns
tQVWL
data valid to WRH and WRL de-asserted
9.0
4.0
ns
tWHAU
WRH and WRL de-asserted to address
undened
2.0
ns
th(D)
data hold time after WRH and WRL
de-asserted
0
1.0
ns
GPS IF input timing; see Fig.20
tFVSH
IF set-up time before rising edge of SCLK
10
ns
tSHFV
IF hold time after rising edge of SCLK
0
ns
1 second pulse output; see Fig.21
tW(T1S)
T1S pulse width
1.0
s
TT1S
T1S pulse period
note 2
1.0
s
SYMBOL CHARACTER
DESCRIPTION
A
address
C
clock
D
input data
E
DMCS strobe
I
instruction (program memory)
P
PCMS strobe
Q
output data
R
RD
W
WRH or WRL strobes
H
logic high
L
logic low
U
undened
V
valid
Z
high impedance or pull-up
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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