saa1575hl NXP Semiconductors, saa1575hl Datasheet - Page 31

• Manufacturer Part Number: saa1575hl
• Description: Global Positioning System Gps Baseband Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
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”
1999 Jun 04
External data memory write; see Fig.19
t
t
t
t
t
t
t
t
t
t
GPS IF input timing; see Fig.20
t
t
1 second pulse output; see Fig.21
t
T
SYMBOL
AVAU
WLDL
W(DMCS)
WHDH
AVWL
WLWH
AVQV
QVWL
WHAU
h(D)
FVSH
SHFV
W(T1S)
T1S
Global Positioning System (GPS)
baseband processor
address valid time
WRH and WRL asserted to DMCS asserted
DMCS pulse width
WRH and WRL de-asserted to DMCS
de-asserted
address valid to WRH and WRL asserted
WRH and WRL pulse width
address valid to data valid
data valid to WRH and WRL de-asserted
WRH and WRL de-asserted to address
undefined
data hold time after WRH and WRL
de-asserted
IF set-up time before rising edge of SCLK
IF hold time after rising edge of SCLK
T1S pulse width
T1S pulse period
SYMBOL CHARACTER
PARAMETER
W
Q
A
C
D
E
P
R
H
U
V
L
Z
I
31
note 1
note 2
CONDITIONS
instruction (program memory)
high impedance or pull-up
WRH or WRL strobes
DESCRIPTION
DMCS strobe
PCMS strobe
164.7
65.7
63.7
64.7
67.7
2.0
0
0
output data
9.0
MIN.
input data
undefined
logic high
logic low
address
clock
valid
RD
2.0
2.0
65.7
1.0
10
1.0
1.0
4.0
TYP.
SAA1575HL
Product specification
4.0
4.0
MAX.
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
UNIT
s