Datasheet

 2010-2012 Microchip Technology Inc. DS41412F-page 211
PIC18(L)F2X/4XK22
15.0 MASTER SYNCHRONOUS
SERIAL PORT (MSSP1 AND
MSSP2) MODULE
15.1 Master SSPx (MSSPx) Module
Overview
The Master Synchronous Serial Port (MSSPx) module
is a serial interface useful for communicating with other
peripheral or microcontroller devices. These peripheral
devices may be Serial EEPROMs, shift registers,
display drivers, A/D converters, etc. The MSSPx
module can operate in one of two modes:
• Serial Peripheral Interface (SPI)
• Inter-Integrated Circuit (I
2
C™)
The SPI interface supports the following modes and
features:
•Master mode
• Slave mode
• Clock Parity
• Slave Select Synchronization (Slave mode only)
• Daisy chain connection of slave devices
Figure 15-1 is a block diagram of the SPI interface
module.
FIGURE 15-1: MSSPx BLOCK DIAGRAM (SPI MODE)
( )
Read Write
Data Bus
SSPxSR Reg
SSPxM<3:0>
bit 0
Shift
Clock
SSx
Control
Enable
Edge
Select
Clock Select
TMR2 Output
T
OSC
Prescaler
4, 16, 64
2
Edge
Select
2 (CKP, CKE)
4
TRIS bit
SDOx
SSPxBUF Reg
SDIx
SSx
SCKx
Baud Rate
Generator
(SSPxADD)