DSPIC30F6012 MICROCHIP [Microchip Technology], DSPIC30F6012 Datasheet - Page 95

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DSPIC30F6012

Manufacturer Part Number
DSPIC30F6012
Description
High-Performance, 16-Bit Digital Signal Controllers
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet

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14.3
The SSx pin allows a Synchronous Slave mode. The
SPI must be configured in SPI Slave mode with SSx pin
control enabled (SSEN = 1). When the SSx pin is low,
transmission and reception are enabled and the SDOx
pin is driven. When SSx pin goes high, the SDOx pin is
no longer driven. Also, the SPI module is re-
synchronized, and all counters/control circuitry are
reset. Therefore, when the SSx pin is asserted low
again, transmission/reception will begin at the MSb
even if SSx had been de-asserted in the middle of a
transmit/receive.
14.4
During Sleep mode, the SPI module is shutdown. If the
CPU enters Sleep mode while an SPI transaction is in
progress, then the transmission and reception is
aborted.
The transmitter and receiver will stop in Sleep mode.
However, register contents are not affected by entering
or exiting Sleep mode.
© 2006 Microchip Technology Inc.
Slave Select Synchronization
SPI Operation During CPU Sleep
Mode
dsPIC30F6011/6012/6013/6014
14.5
When the device enters Idle mode, all clock sources
remain functional. The SPISIDL bit (SPIxSTAT<13>)
selects if the SPI module will stop or continue on Idle. If
SPISIDL = 0, the module will continue to operate when
the CPU enters Idle mode. If SPISIDL = 1, the module
will stop when the CPU enters Idle mode.
SPI Operation During CPU Idle
Mode
DS70117F-page 93

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