8-334 Schematics, Boards Overlays, and Parts Lists: Expansion Boards
Figure 8-147. MHLN6977A/B GPS Circuit
1
C2260
LP3991
1UF
B2
GPS_1.8V
B1
A2
A1
4.7UF
GPS_2.8V
VSW_3.6
B1
LP5900
C2201
GND
VOUT
VIN
VEN
VEN
VIN
GND
VOUT
B2
A2
A1
U2270
U2220
C2275
1UF
1.8V LDO
(NATIONAL LP3991TLX-2.8)
2.8V LDO
(NATIONAL LP5900TLX-1.8)
(NATIONAL LP3991TLX-1.2)
1.2V LDO
GND
VOUT
VIN
VEN
R2203
C2204
C2285
B1
B2
A2
A1
U2284
4.7UF
LP3991
10UF
10
GPS_1.2V
1.2V CORE: ~90MA
DEDICATED GPS DC SUPPLIES
1.8V RF: ~20MA
SIRF SPECS:
1.8V IO: ~ 2MA
1
TP2201
R2216
TEST_POINT
TPSM1_01
0
32KHZ
IN
26MHZ TCXO
VCC
GND1
GND2
OUT
NC1
NC2
NC
NC
6
4
5
2
3
1
Y2204
26MHZ
KT2520Y26000
21
L2214
C2215
C2217
C2219
.01UF
1UF
18NH
12PF
GPS_2.8V
C2238
.01UF
R2247
R2255
C2246 C2248
4700PF
560PF
100K
1.74K
NC
NC
NC
B6
F4
D6
K5
J4
J1
D4
L5
C1
F5
J7
D1
A1
E3
E4
G1
GPS
SIRF GSCI-5001 (ROM 1.3)
VCC_REF
VCC_PLL
VEE_REF
VEE_VCO
VEE_LNA2_1
VEE_LNA2_2
VEE_LNA1
VEE_PLL
VEE_IF
VEE_RFA
VDD1
VDD_CORE_KA
VDD_RAM1
TDO
LNA_OUT
RFA_INP
NC1
NC2
NC3
NC4
NC5
NC6
NC7
NC8
EXT_NIRG
ADC_EXT_0
LNA_IN
VTUNE
NRESET
LOW_REF_CLKI
REF_CLK_IN
IF_TEST_P
IF_TEST_N
TMS
MOD_MCLK
FDIN
STAND_ALONE
TCK
MOD_ARM
TDI
VCC_LNA
VCC_IF
VCC_RFA
VCC_VCO
ONE_PPS
ADC_EXT_1
NPCS_RXD1
SCK_TXD1
ADC_EXT_2
MISO_TXD0
MCLK_EXT
ADC_EXT_3
MOSI_RXD0
VDD_IO2
RFA_INM
LOW_
REF_
CLKO
NTRST
VDD2
VDD_IO1
VDD_CORE1
VDD_CORE2
VDD_CORE4
VDD_RAM2
VDD_CORE3
VSS1
VSS2
GND_CORE4
GND_CORE_KA
GND_CORE3
GND_IO1
GND_CORE1
GND_IO2
GND_CORE2
NC9
FDOUT
TEST
VDD_CORE_CAP
U2206
NC
A7
A4
A6
C6
B2
B1
C3
D3
F6
E2
K4
E6
E1
K7
K1
L4
G7
F7
E5
D2
B7
B4
C4
C5
A2
B3
C2279
C2274
C2282
1UF
12PF
.01UF
FLTRD_GPS_1.8V_RF
2
L2264
GPS_1.8V
18NH
R2294
C2203
C2278
C2273
1UF
FLTRD_GPS_1.2V_CORE
12PF
GPS_1.2V
.01UF
0
R2295
C2272
C2277
C2281
12PF
0
.01UF
1UF
C2286 C2287
.01UF
100PF
FLTRD_GPS_1.8V_IO
GPS_1.8V
DIFFERENTIAL SAW
(SAWTEK 856576) (1575.42 MHZ)
IN
OUTNEG
OUTPOS
GND1
GND2
4
3
1
5
2
FL2207
856576
(LNA_ENABLE = 1.8V)
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
R2201
J5
H7
A5
B5
H2
H6
L7
L6
L3
L2
L1
J2
E7
D7
C7
K6
J6
K2
F1
A3
H1
F2
K3
J3
H3
F3
FLTRD_GPS_1.8V_IO
GPS_LNA_PON
100K
MOSI_RXD0
MISO_TXD0
D5
C2
H4
G5
G3
G2
G4
H5
G6
1
TP2206
1
TP2205
R2292
R2291
GPS_RX__FROM__OMAP_UART_TX
0
TEST_POINT
TPSM1_01
0
TEST_POINT
TPSM1_01
GPS_TX__TO__OMAP_UART_RX
IN
OUT
R2202
1
TP2202
0
GPS_RESET
TPSM1_01
TEST_POINT
IN
(LNA_ENABLE = 1.8V)
DC BIAS FOR GPS LNA ADDED TO RF BOARD
GPS_LNA_PON
ANTENNA SHUNT ANTENNA CONTACT
1
TP2203
1
TP2204
TEST_POINTTEST_POINT
R2205
GPS_ANT
0
IN
R2204
1K
L2201
C2202
C2220
4.7NH
6.8PF
5.6PF
(FOR NEW GPS ARCHITECTURE THRU ALL 3 BOARDS)
RF MATCH
(FUJITSU L4AA) (1575.42MHZ)
SNGL-ENDED SAW
GND1
GND2
OUT
GND3
IN
41
5
3
2
FL2205
FARF6KA1G5754
AI
BIAS
PON
VCC
GND
DEG
AO
4
2
6
1
U2217
BGA615L7
2
1
L2219
5
C2212
C2214
GPS_2.8V
12PF
1000PF
18NH
7
3
C2210
L2209
L2213
C2216
C2208
GPS_LNA_PON
.01UF
3.3NH
12PF
12PF
100NH
(INFINEON BGA615L7)
EXTERNAL LNA
C2271
C2262
C2267
L2268
DNP
18PF
DNP
.5PF
3.3NH
DNP
.5PF