Nokia 603, Руководство по обслуживанию

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Figure 45 BOB1.0M-b module block diagram with GPS diplexer
From a troubleshooting point of view, WLAN is tested separately, but BTH and FMRX are checked in parallel.
REFOUT_EXT1 single ended 38.4 MHz analog clock from Linko RF is provided to BOB1.0M-b. The clock request
for the reference clock in the BOB1.0M-b module is shared between WLAN and BTHFM blocks. When either
system requires a clock, this signal will be active. The CLK_REQ is connected to ExtSysClkReq pin of RAPU. The
SLEEPCLK input of 32.768 KHz clock from EM ASIC is used for power management and for FM in low power
mode.
The internal SMPS supplies the whole BOB1.0M-b solution from the phone battery supply, VBAT, apart from
VIO, which is needed for interface signal reference levels.
Figure 46 BOB1.0M-b interface
RM-779
System Module
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