MCIMX233CJM4B Datasheet, PDF (1040/1612 Pages) Freescale Semiconductor, Inc – i.MX23 Applications Processor Reference Manual

Synchronous Serial Ports (SSP)
Table 21-19. HW_SSP_TIMING Bit Field Descriptions
BITS
LABEL
31:16 TIMEOUT
15:8 CLOCK_DIVIDE
7:0 CLOCK_RATE
RW RESET
RW 0x0
RW 0x0
RW 0x0
DEFINITION
Timeout counter. This specifies the number of SCK
cycles multiplied by 4096, to wait before asserting the
DATA TIMEOUT IRQ. It is used during timeout is used
for data transfer/write operations in SD/MMC mode.
Clock Pre-Divider. CLOCK_DIVIDE must be an even
value from 2 to 254.
Serial Clock Rate. The value CLOCK_RATE is used to
generate the transmit and receive bit rate of the SSP.
The bit rate is SSPCLK / (CLOCK_DIVIDE x (1+
CLOCK_RATE)). CLOCK_RATE is a value from 0 to
255.
DESCRIPTION:
The Timeout field and the clock dividers are contained in this register.
EXAMPLE:
No Example.
21.10.7 SSP Control Register 1 Description
Control Register 1.
HW_SSP_CTRL1
HW_SSP_CTRL1_SET
HW_SSP_CTRL1_CLR
HW_SSP_CTRL1_TOG
0x060
0x064
0x068
0x06C
Table 21-20. HW_SSP_CTRL1
33222222222211111111110000000000
10987654321098765432109876543210
Table 21-21. HW_SSP_CTRL1 Bit Field Descriptions
BITS
LABEL
31 SDIO_IRQ
30 SDIO_IRQ_EN
RW RESET
RW 0x0
RW 0x0
DEFINITION
If this is set, an SDIO card interrupt has occurred and
an IRQ, if enabled, has been sent to the ICOLL. Write
a one to the SCT Clear address to reset this interrupt
request status bit.
SDIO Card Interrupt IRQ Enable. 0: SDIO card IRQs
masked. 1: SDIO card IRQs will be sent to the ICOLL.
21-26
i.MX23 Applications Processor Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor