Rainbow Electronics ATR0630 - Manual (Page 9)

9
4920A–GPS–01/06
ATR0630 [Preliminary]
3.2 Signal Description
VDD_USB (3) A10 Supply
VDD18 H9 Supply
VDD18 G11 Supply
VDD18 F12 Supply
VDD18 B9 Supply
VDD18 E5 Supply
VDDIO (4) B5 Supply
VDDIO H5 Supply
VDIG A5 Supply
X A2 Analog OUT
XT_IN A12 Analog IN
XT_OUT B12 Analog OUT
XTO A1 Analog Input
Table 3-2. Signal Description
Pin Number Pin Name Type Active Level Pin Description/Comment
RF Section
D1 RF ANALOG IN - Input from SAW filter
C1 NRF ANALOG IN - Inverted input from SAW filter
GPS XTAL Section
A1 XTO ANALOG IN - XTO input (23.104 MHz)/optional TCXO input
B3 NXTO ANALOG IN - Inverted XTO input (23.104 MHz)/optional TCXO input
A2 X ANALOG OUT - XTO interface (capacitor)
B2 NX ANALOG OUT - Inverted XTO interface (capacitor)
RTC Section
A12 XT_IN ANALOG IN - Oscillator input (32.768 kHz)
B12 XT_OUT ANALOG OUT - Oscillator output (32.768 kHz)
Automatic Gain Control, bandwidth setting
A4 AGCO ANALOG IO - Automatic gain control analog voltage, connect shunt capacitor to GND
D4 EGC DIGITAL IN -
Enable external gain control
(high = software gain control, low = automatic gain control)
G12 AGCOUT0 DIGITAL OUT - Software gain control, connect to SDI (C4)
C4 SDI DIGITAL IN - Software gain control, connect to AGCOUT0 (G12)
Table 3-1. ATR0630 Pinout (Continued)
Pin Name BGA 96 Pin Type
Pull Resistor
(Reset Value) (1) Firmware Label
PIO Bank A
I O
Notes: 1. PD = internal pull-down resistor, PU = internal pull-up resistor, OH = switched to Output High at reset
2. VBAT18 represent the internal power supply of the backup power domain, see section “Power Supply” on page 20 .
3. VDD_USB is the supply voltage for following the USB pins: USB_DM and USB_DP, see section “Power Supply” on page
20 . For operation of the USB interface, supply of 3.0V to 3.6V is required.
4. VDDIO is the supply voltage for the following GPIO pins: P1, P2, P8, P12, P14, P16, P17, P18, P19, P20, P21, P23, P24,
P25, P26, P27 and P29, see section “Power Supply” on page 20 .