Information

Table 10-31. SDHC Signal Descriptions
Chip signal name Module signal
name
Description I/O
SDHC0_CLKIN — SDHC clock input I
SDHC0_DCLK SDHC_DCLK Generated clock used to drive the MMC, SD, SDIO or CE-ATA
cards.
O
SDHC0_CMD SDHC_CMD Send commands to and receive responses from the card. I/O
SDHC0_D0 SDHC_D0 DAT0 line or busy-state detect I/O
SDHC0_D1 SDHC_D1 8-bit mode: DAT1 line
4-bit mode: DAT1 line or interrupt detect
1-bit mode: Interrupt detect
I/O
SDHC0_D2 SDHC_D2 4-/8-bit mode: DAT2 line or read wait
1-bit mode: Read wait
I/O
SDHC0_D3 SDHC_D3 4-/8-bit mode: DAT3 line or configured as card detection pin
1-bit mode: May be configured as card detection pin
I/O
SDHC0_D4 SDHC_D4 DAT4 line in 8-bit mode
Not used in other modes
I/O
SDHC0_D5 SDHC_D5 DAT5 line in 8-bit mode
Not used in other modes
I/O
SDHC0_D6 SDHC_D6 DAT6 line in 8-bit mode
Not used in other modes
I/O
SDHC0_D7 SDHC_D7 DAT7 line in 8-bit mode
Not used in other modes
I/O
Table 10-32. I
2
S 0 Signal Descriptions
Chip signal name Module signal
name
Description I/O
I2S0_MCLK — Serial master clock output I/O
I2S0_RX_BCLK SRCK Serial receive clock. SRCK can be used as an input or output.
• In asynchronous mode the receiver uses this clock signal
and it is always continuous.
• In synchronous mode, the STCK port is used instead for
clocking in data.
I/O
I2S0_RX_FS SRFS Serial receive frame Sync. The SRFS port can be used as an input
or output. The frame sync is used by the receiver to synchronize
the transfer of data. The frame sync signal can be one bit or one
word in length and can occur one bit before the transfer of data or
right at the transfer of data. If SRFS is configured as an input, the
external device should drive SRFS during the rising edge of STCK
or SRCK.
I/O
I2S0_RXD SRXD Serial receive data. The SRXD port is an input and is used to bring
serial data into the receive data shift register.
I
Table continues on the next page...
Chapter 10 Signal Multiplexing and Signal Descriptions
K10 Sub-Family Reference Manual, Rev. 6, Nov 2011
Freescale Semiconductor, Inc. 233