SAA1575HL Datasheet, PDF (8/56 Pages) NXP Semiconductors – Global Positioning System GPS baseband processor

Philips Semiconductors
Global Positioning System (GPS)
baseband processor
Product specification
SAA1575HL
SYMBOL PIN
D15
48
D14
49
V_SS
50
V_CC(P)
51
PWRDN
52
D13
53
D12
54
D11
55
D10
56
D9
57
D8
58
D7
59
V_SS
60
V_CC(P)
61
D6
62
D5
63
D4
64
V_SS
65
V_CC(core)
66
D3
67
D2
68
D1
69
D0
70
V_SS
71
1999 Jun 04
I/O
DESCRIPTION
I/O External memory data bus: 16-bit data bus; used to connect to external RAM and
program memory
I/O External memory data bus bit 14: 16-bit data bus; used to connect to external RAM
and program memory
− Ground: 0 V reference
− Main I/O power supply: 2.7 to 5.5 V operating range; main supply for the periphery
in normal operation
I Power-down indicator: a LOW on this pin asserts an XA interrupt intended for use
as a power fail interrupt. Once reset is asserted, either by PWRFAIL or the firmware, it
will remain asserted until a set time after this pin goes HIGH.
I/O External memory data bus bit 13: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 12: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 11: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 10: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 9: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 8: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 7: 16-bit data bus; used to connect to external RAM
and program memory
− Ground: 0 V reference
− Main I/O power supply: 2.7 to 5.5 V operating range; main supply for the periphery
in normal operation
I/O External memory data bus bit 6: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 5: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 4: 16-bit data bus; used to connect to external RAM
and program memory
− Ground: 0 V reference
− Main core power supply: 2.7 to 3.6 V only; main supply for the core in normal
operation
I/O External memory data bus bit 3: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 2: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 1: 16-bit data bus; used to connect to external RAM
and program memory
I/O External memory data bus bit 0: 16-bit data bus; used to connect to external RAM
and program memory
− Ground: 0 V reference
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