Motorola MPC533 Reference Manual page 621

Table 15-11. DDRQS Bit Descriptions (continued)
Bits Name
10 QDDPCS2
11 QDDPCS1
12 QDDPCS0
13 QDDSCK
14 QPDMOSI
15 QPDMISO
15.6 Queued Serial Peripheral Interface
The queued serial peripheral interface (QSPI) is used to communicate with external devices
through a synchronous serial bus. The QSPI is fully compatible with SPI systems found on
other Motorola products, but has enhanced capabilities. The QSPI can perform full duplex
three-wire or half duplex two-wire transfers. Several transfer rates, clocking, and
interrupt-driven communication options are available. Figure 15-10 is a block diagram of
the QSPI.
MOTOROLA
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
QSPI pin data direction for the pin PCS2
0 Pin direction is input
1 Pin direction is output
QSPI pin data direction for the pin PCS1
0 Pin direction is input
1 Pin direction is output
QSPI pin data direction for the pin PCS0
0 Pin direction is input
1 Pin direction is output
QSPI pin data direction for the pin SCK
0 Pin direction is input
1 Pin direction is output
QSPI pin data direction for the pin MOSI
0 Pin direction is input
1 Pin direction is output
QSPI pin data direction for the pin MISO
0 Pin direction is input
1 Pin direction is output
Chapter 15. Queued Serial Multi-Channel Module
Queued Serial Peripheral Interface
Description
15-15