MEC1404 Datasheet, PDF (133/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
6.0 QUAD SPI MASTER CONTROLLER
6.1 Overview
The Quad SPI Master Controller may be used to communicate with various peripheral devices that use a Serial Periph-
eral Interface, such as EEPROMS, DACs and ADCs. The controller can be configured to support advanced SPI Flash
devices with multi-phase access protocols. Data can be transfered in Half Duplex, Single Data Rate, Dual Data Rate
and Quad Data Rate modes. In all modes and all SPI clock speeds, the controller supports back-to-back reads and
writes without clock stretching if internal bandwidth permits.
6.2 References
No references have been cited for this feature.
6.3 Terminology
No terminology for this block.
6.4 Interface
This block is designed to be accessed externally via the pin interface and internally via a registered host interface.
FIGURE 6-1:
I/O DIAGRAM OF BLOCK
Host Interface
Quad SPI Master Controller
Power, Clocks and Reset
Signal Description
Interrupts
6.5 Signal Description
TABLE 6-1: SIGNAL DESCRIPTION TABLE
Name
SPI_CLK
SPI_CS#
Direction
Output
Output
Description
SPI Clock output used to drive the SPCLK pin.
SPI chip select
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DS00001956D-page 133