saa1575hl NXP Semiconductors, saa1575hl Datasheet - Page 6

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

Philips Semiconductors
6
1999 Jun 04
SCLK
T1S
TP3
TP4
GPIO5
GPIO6
GPIO7
n.c.
n.c.
A19
A18
V
V
XTAL1
XTAL2
V
V
A17
A16
A15
A14
A13
A12
SYMBOL
CC(core)
SS
CC(P)
SS
Global Positioning System (GPS)
baseband processor
PINNING
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
1
2
3
4
5
6
7
8
9
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
Sample clock: sample clock generated internally by dividing down the RCLK
(reference clock) input. This output is provided for use by the front-end IC.
GPS time pulse: a 1 pulse per second output whose rising or falling edge (firmware
controlled) is synchronized to GPS time when the receiver is tracking a GPS signal.
The pulse length is approximately 1 ms.
Test pin: tie HIGH
Test pin: tie HIGH
GPIO bit 5: standard general purpose I/O mapped into the segment 15 of the address
space. The top 4 bits can be used as the XA external timer control access pins
(T0, T1, T2 and T2EX).
GPIO bit 6: standard general purpose I/O mapped into the segment 15 of the address
space. The top 4 bits can be used as the XA external timer control access pins
(T0, T1, T2 and T2EX).
GPIO bit 7: standard general purpose I/O mapped into the segment 15 of the address
space. The top 4 bits can be used as the XA external timer control access pins
(T0, T1, T2 and T2EX).
Not connected: do not connect
Not connected: do not connect
External memory address bus bit 19: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 18: 19-bit address bus; used to address external
RAM and program memory
Main core power supply: 2.7 to 3.6 V only; main supply for the core in normal
operation
Ground: 0 V reference
Crystal 1: input to the inverting amplifier; used in the system oscillator circuit and
input to the internal clock generator circuits
Crystal 2: output from the system oscillator amplifier
Main I/O power supply: 2.7 to 5.5 V operating range; main supply for the periphery
in normal operation
Ground: 0 V reference
External memory address bus bit 17: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 16: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 15: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 14: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 13: 19-bit address bus; used to address external
RAM and program memory
External memory address bus bit 12: 19-bit address bus; used to address external
RAM and program memory
6
DESCRIPTION
SAA1575HL
Product specification