GP1020IGGPKR Datasheet PDF - Zarlink Semiconductor Inc
| Part Number | GP1020IGGPKR | |
| Description | SIX-CHANNEL PARALLEL CORRELATOR CIRCUIT FOR GPS OR GLONASS RECEIVERS | |
| Manufacturers | Zarlink Semiconductor Inc | |
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FEBRUARY 1994
DS3605-2.2
GP1020
SIX-CHANNEL PARALLEL CORRELATOR CIRCUIT
FOR GPS OR GLONASS RECEIVERS
The GP1020 is a six-channel CMOS digital correlator which
has been designed to work with the GP1010 L1-channel down-
converter or other integrated circuits, and may be used to acquire
and track the GPS C/A code or the GLONASS signals.
For each of the six channels the GP1020 includes independ-
ent digital down-conversion to baseband, C/A code generation,
correlation, and accumulate-and-dump registers.
The GP1020 interfaces with a microprocessor via a 16-bit
data bus to control the acquisition and tracking processes using
the various registers on the chip.
FEATURES
s Six Fully Independent Correlation Channels
s Switchable to Receive GPS or GLONASS Codes
s Input Multiplexer for Multiple GPS Front-Ends – Allows
Antenna Diversity
s Input Multiplexer for GLONASS Multiple (Separate
Channels) Front-Ends
s Digital Interface Compatible with Most 16 or 32-Bit
Microprocessors
s Fully Compatible with GP1010 GPS Receiver Front-End
s Sideways Stackable to give Multiples of Six Channels
s 120-pin Plastic Quad Flatpack
s Power Dissipation Less Than 500mW
APPLICATIONS
s GPS or GLONASS Navigation Systems
s High Integrity Combined Receivers
s GPS Geodetic Receivers
s GPS Time Reference
ORDERING INFORMATION
The GP1020 is available in 120-pin Quad Flatpacks (Gullwing
formed leads) in both Commercial (0°C to 170°C) and Industrial
(240°C to 185°C) grades. The ordering codes below are for
standard screened devices.
ORDERING CODES
GP1020 CG GPKR Commercial - Plastic 120-pin QFP (GP120)
GP1020 IG GPKR Industrial - Plastic 120-pin QFP (GP120)
90
91
61
60
GP1020
120 31
1 30 GP120
Fig 1 Pin connections - top view
ABSOLUTE MAXIMUM RATINGS
These are not the operating conditions, but are the absolute
limits which if exceeded, even momentarily, may cause perma-
nent damage. To ensure sustained correct operation the device
should be used within the limits given under Electrical Character-
istics.
Supply voltage (VDD) from ground (VSS):
20·3V to16·0 V
Input voltage (any input pin):
VSS20·3V to VDD10·3 V
Output voltage (any output pin):
VSS20·3V to VDD10·3 V
Storage temperature:
255°C to 1125°C
RELATED PRODUCTS
Part
Description
DW9255 35·42MHz SAW Filter
GP1010 GPS Receiver Front-End
Datasheet
Reference
DS3861
DS3076
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TIMING CHARACTERISTICS (See Figs. 4 to 9)
Characteristic
Symbol
Value
Units
Min. Max.
Address hold time
ALE pulse width
ALE valid to WEN or RW valid (WPROG = 1)
ALE valid to WEN or RW valid (WPROG = 0)
Address valid to ALE low
Address valid to WEN or RW valid
CS high to ALE valid
CS low to WEN or RW valid
Data hold time
Data setup time
RW high to data at high impedance
RW valid to data valid
RW valid to WEN high
WEN low to RW not valid
Write pulse width
CS hold time after RW or WEN not valid
tAHOLD
tALEPW
tALESETUP
tALVWRV
tASETUP
tAVWRV
tCHALV
tCVWRV
tDHOLD
tDSETUP
tRHDZ
tRVDV
tRWVWENH
tWENLRWNV
tWLWH
tWRCH
10
20
5
20
20
20
10
0
10
30
10
10
15
15
30
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
25 ns
50 ns
ns
ns
ns
ns
NOTE. This timing information is based on simulations and is not verified by measurement on each device.
GP1020 BUS TIMING DIAGRAMS
GP1020
Conditions
WEN
CS
ALE
A (8:1)
D (15:0)
tCVWRV
tWRHCH
tALESETUP
tWLWH
tALEPW
tASETUP
tAHOLD
ADDRESS VALID
tCHALV
NEXT
R/W
tDSETUP
tDHOLD
DATA VALID
RW
CS
ALE
A (8:1)
D (15:0)
tCVWRV
tWRHCH
tALESETUP
tALEPW
tASETUP
tAHOLD
ADDRESS VALID
tCHALV
NEXT
R/W
tRVDV
tRHDZ
DATA VALID
RW (HIGH)
Fig. 4 Intel 486 mode WRITE. MOT/INTEL = 0, WPROG = 1
(Write inhibited until ALE falling edge)
WEN (HIGH)
Fig. 5 Intel 486 mode READ. MOT/INTEL = 0, WPROG = 1
WEN
tCVWRV
CS
tWLWH
tALVWRV
ALE
tAVWRV
A (8:1)
tAHOLD
ADDRESS VALID
tWRHCH
tCHALV
NEXT
R/W
D (15:0)
tDSETUP
tDHOLD
DATA VALID
RW
tCVWRV
CS
tALVWRV
ALE
A (8:1)
tAVWRV
tAHOLD
ADDRESS VALID
tWRHCH
tCHALV
NEXT
R/W
D (15:0)
tRVDV
tRHDZ
DATA VALID
RW (HIGH)
Fig. 6 Intel 186 mode WRITE. MOT/INTEL = 0, WPROG = 0
WEN (HIGH)
Fig. 7 Intel 186 mode READ. MOT/INTEL = 0, WPROG = 0
5
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| GP1020IGGPKR | The function is SIX-CHANNEL PARALLEL CORRELATOR CIRCUIT FOR GPS OR GLONASS RECEIVERS. Zarlink Semiconductor Inc | |
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