BCM4319 Preliminary Data Sheet
SDIO Pin Descriptions
Table 6: 138-Ball WLBGA Signal Descriptions (Cont.)
Type Description
Ball
Signal Name
WD8
WD9
WE2
WE5
WE7
WG1
WRF_GNDA_1P2
–
–
–
–
–
–
Ground
Ground
Ground
Ground
Ground
Ground
WRF_GNDPFDCP_1P2
WRF_GNDPAG_3P3
WRF_GNDLO_1P2
WRF_GNDVCO_1P2
WRF_AFE_PAD_AVSS_RXA
DC
WG4
WL5
WP2
WN2
WRF_BBPLL_GND_1P2
BT_REG_ON
–
–
–
–
Ground
Ground
Ground
Ground
USB20PHY_AGND_PAD
USB20PHY_GNDPLL_PAD
No Connect
WE4
WF1
WF2
WF3
WRF_GPIO_OUT2
O
I
No connect
No connect
No connect
No connect
WRF_AFE_PAD_TEST_IP
WRF_AFE_PAD_TEST_IN
I
WRF_AFE_PAD_IQADC_VR
EF
O
WF4
WF9
WH1
WH2
WRF_GPIO_OUT1
O
I
No connect
No connect
No connect
No connect
WRF_EXTREFIN
WRF_AFE_PAD_TEST_OP
WRF_AFE_PAD_TEST_ON
O
O
SDIO Pin Descriptions
Table 7: SDIO Pin Descriptions
SD 4-Bit Mode
SD 1-Bit Mode
gSPI Mode
SDIO_DATA_0
SDIO_DATA_1
SDIO_DATA_2
SDIO_DATA_3
SDIO_CLK
Data line 0
DATA Data line
DO
IRQ
NC
CS
Data output
Interrupt
Data line 1 or interrupt
Data line 2 or read wait
Data line 3
IRQ
RW
N/C
Interrupt
Read wait
Not used
Not used
Card select
Clock
CLK Clock
SCLK Clock
DI Data input
SDIO_CMD
Command line
CMD Command line
Broadcom®
Single-Chip IEEE 802.11™ a/b/g/n MAC/Baseband/Radio
Page 54
April 2, 2014 • 4319-DS05-R
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