Advertisement
5
D
[25,41]
WTR0_BB_PRX_IM
[25,41]
WTR0_BB_PRX_IP
[25,41]
WTR0_BB_PRX_QM
[25,41]
WTR0_BB_PRX_QP
[25,41]
WTR0_BB_DRX_IM
[25,41]
WTR0_BB_DRX_IP
[25,41]
WTR0_BB_DRX_QM
[25,41]
WTR0_BB_DRX_QP
[25,34]
WTR1_BB_PRX_IM
[25,34]
WTR1_BB_PRX_IP
[25,34]
WTR1_BB_PRX_QM
[25,34]
WTR1_BB_PRX_QP
C
[25,28]
WLAN_IM
[25,28]
WLAN_IP
[25,28]
WLAN_QM
[25,28]
WLAN_QP
NC pins referenece 80_NA437_5B
B
A
5
4
U100-3
RF_INTF
BH26
BBRX_IM_CH0
TX_DAC0_IM
BK26
BBRX_IP_CH0
TX_DAC0_IP
BG27
BBRX_QM_CH0
TX_DAC0_QM
BJ27
BBRX_QP_CH0
TX_DAC0_QP
TX_DAC0_IREF
BG29
BBRX_IM_CH1
TX_DAC0_VREF
BH28
BBRX_IP_CH1
BH30
BBRX_QM_CH1
TX_DAC1_IM
BK30
BBRX_QP_CH1
TX_DAC1_IP
TX_DAC1_QM
BK38
BBRX_IM_CH2
TX_DAC1_QP
BH38
BBRX_IP_CH2
TX_DAC1_IREF
BG39
BBRX_QM_CH2
TX_DAC1_VREF
BJ39
BBRX_QP_CH2
BG41
BBRX_IM_CH3
ET_DAC_M
BH40
BBRX_IP_CH3
ET_DAC_P
BJ43
BBRX_QM_CH3
BH42
BBRX_QP_CH3
GNSS_BB_IP
G25
WLAN_BB_IM
GNSS_BB_IM
E25
WLAN_BB_IP
GNSS_BB_QP
F24
WLAN_BB_QM
GNSS_BB_QM
E23
WLAN_BB_QP
MSM8974
Refer to 80-NA437-22/5B MSM8x74 Digital Baseband Training Slides/Design Guidelines:
Handling unused MSM pins page for terminating unused I/Q pins.
4
3
VREG_L14_1P8
C401
C402
2.2nF
2.2nF
N.M.
N.M.
BD22
BE23
BE21
BF22
BF24
BE25
BF36
BE35
BE31
BF32
BG35
WTR1_BB_TX_IDAC
BF34
TX_DAC1_VREF
R405
0R
N.M.
N.M.
ET_DAC_M
BH32
R402
0R
ET_DAC_P
BG33
R403
0R
N.M.
BC33
BC35
BC29
BC31
Rev.E Note:
For CSFB - Unused BBRX_I/Q_CH2/3 pins can be left floating.
Unused TXDAC1_I/Q pins must be connected to GND
Unused TXDAC1_VREF pin must be connected to GND
TXDAC1_IREF pin must be connected to VREG_L14_1P8.
3
2
WTR0_BB_TX_IM
[25,40]
WTR0_BB_TX_IP
[25,40]
WTR0_BB_TX_QM
[25,40]
WTR0_BB_TX_QP
[25,40]
WTR0_BB_TX_IDAC
[25,40]
TXDAC0_VREF
[11]
TX_DAC1_I/Q configration:
TX_DAC1_I/Q unused:
All TX_DAC1_I/Q connected to GND.
WTR1_BB_TX_IM
[25,34]
TX_DAC1_I/Q used:
WTR1_BB_TX_IP
[25,34]
All TX_DAC1_I/Q connected to WTR1_I/Q.
WTR1_BB_TX_QM
[25,34]
TX_DAC1_VREF configration:
WTR1_BB_TX_QP
[25,34]
TX_DAC1_I/Q unused,ET unused:
WTR1_BB_TX_IDAC
[25,34]
R405 N.M,R406 used 0201 0ohm to GND.
Other mode:
R405 used 0201 0ohm,R406 N.M.
ET_DAC_P/M configration:
ETDAC1_M
[25,42]
ET unused:
ETDAC1_P
[25,42]
R402 R403 N.M,
ET used:
R402 R403 SMT 0201 0ohm to QFE1100
WTR0_GPS_BB_IP
[25,41]
WTR0_GPS_BB_IM
[25,41]
WTR0_GPS_BB_QP
[25,41]
WTR_GPS_BB_QM
[25,41]
TX_DAC1_IREF configration:
TX_DAC1_I/Q unused:
If ET unused, TX_DAC1_IREF connected to GND.
If ET used, TX_DAC1_IREF connected to VREG_L14.
TX_DAC1_I/Q used:
TX_DAC1_IREF connected to WTR1_DAC_IREF.
<Variant Name>
<Variant Name>
<Variant Name>
Lenovo
Lenovo
Lenovo
Title
Title
Title
K920
K920
K920
Size
Size
Size
Document Number
Document Number
Document Number
A4
A4
A4
P04. MSM8974 RF INTERFACE
P04. MSM8974 RF INTERFACE
P04. MSM8974 RF INTERFACE
Date:
Date:
Date:
Tuesday, August 05, 2014
Tuesday, August 05, 2014
Tuesday, August 05, 2014
Sheet
Sheet
Sheet
2
1
D
C
pin BH32 BG33 floating
B
A
Rev
Rev
Rev
0.11
0.11
0.11
4
4
4
of
of
of
58
58
58
1
Advertisement
