
Queued Serial Peripheral Interface (QSPI)
30-8
Freescale Semiconductor
30.3.6
QSPI Data Register (QDR)
The QDR is used to access QSPI RAM indirectly. The CPU reads and writes all data from and to the QSPI
RAM through this register.
A write to QDR causes data to be written to the RAM entry specified by QAR[ADDR]. This also causes
the value in QAR to increment. Correspondingly, a read at QDR returns the data in the RAM at the address
specified by QAR[ADDR]. This also causes QAR to increment. A read access requires a single wait state.
30.3.7
Command RAM Registers (QCR0–QCR15)
The command RAM is accessed using the upper byte of the QDR; the QSPI cannot modify information in
command RAM. There are 16 bytes in the command RAM. Each byte is divided into two fields. The chip
select field enables external peripherals for transfer. The command field provides transfer operations.
Address: 0xFC05_C010 (QAR)
Access: User read/write
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
0
0
0
0
ADDR
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 30-7. QSPI Address Register (QAR)
Table 30-7. QAR Field Descriptions
Field
Description
15–6
Reserved, must be cleared.
5–0
ADDR
Address used to read/write the QSPI RAM. Ranges are as follows:
0x00–0x0F Transmit RAM
0x10–0x1F Receive RAM
0x20–0x2F Command RAM
0x30–0x3F Reserved
Address: 0xFC05_C014 (QDR)
Access: User read/write
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
R
DATA
W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Figure 30-8. QSPI Data Register (QDR)
Table 30-8. QDR Field Descriptions
Field
Description
15–0
DATA
A write to this field causes data to be written to the QSPI RAM entry specified by QAR[ADDR]. Similarly, a read of
this field returns the data in the QSPI RAM at the address specified by QAR[ADDR]. During command RAM
accesses (QAR[ADDR] = 0x20–0x2F), only the most significant byte of this field is used.
MCF5329 Reference Manual, Rev 3
Summary of Contents for MCF5329
Page 106: ...ColdFire Core 3 32 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 148: ...Cache 5 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 154: ...Static RAM SRAM 6 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 184: ...Power Management 8 18 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 204: ...Reset Controller Module 10 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 220: ...System Control Module SCM 11 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 228: ...Crossbar Switch XBS 12 8 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 268: ...General Purpose I O Module 13 40 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 392: ...SDRAM Controller SDRAMC 18 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 436: ...Fast Ethernet Controller FEC 19 44 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 594: ...FlexCAN 23 30 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 678: ...Pulse Width Modulation PWM Module 26 22 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 684: ...Watchdog Timer Module 27 6 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 704: ...DMA Timers DTIM0 DTIM3 29 12 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 754: ...UART Modules 31 34 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 770: ...I2 C Interface 32 16 Freescale Semiconductor MCF5329 Reference Manual Rev 3...
Page 866: ...Debug Module 36 50 Freescale Semiconductor MCF5329 Reference Manual Rev 3...