Preliminary
Device Clocking and Flying Adder PLL
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1.10.2 I/O Domains
The I/O domains refer to the frequencies of the peripherals that communicate through device pins. In
many cases, there are frequency requirements for a peripheral pin interface that are set by an outside
standard and must be met. It is not necessarily possible to obtain these frequencies from the on-chip clock
generation circuitry, so the frequencies must be obtained from external sources and are asynchronous to
the CPU frequency by definition.
shows the external Peripheral Clock Sources.
Table 1-70. External Peripheral Clock Sources
I/O (External) Domain Clock Source Options
Peripheral
I/O Domain Clock
Internal Clock Source
External Clock Source
Frequency
DDR2
333 to 533 MHz
SYSCLK8
DDR3
333 to 800 MHz
SYSCLK8
MTS
27 MHz
SYSCLK14, SYSCLK16
MTSI_DLCK
EMAC
125 MHz
SYSCLK24
EMAC[0]_TXCLK, EMAC[0]_RXCLK,
EMAC[1]_TXCLK, EMAC[1]_RXCLK
MDIO
25 MHz
SYSCLK6
HDVPSS
162 MHz
SYSCLK13, SYSCLK15, VIN[0]A_CLK, VIN[0]B_CLK,VIN[1]A_CLK,
SYSCLK17
VIN[1]B_CLK
McASP
50 MHz
SYSCLK20, SYSCLK21, MCA[0]_ACLKX, MCA[0]_AHCLKX,
SYSCLK22
MCA[0]_ACLKR, MCA[0]_AHCLKR,
MCA[1]_ACLKX, MCA[1]_AHCLKX,
MCA[1]_ACLKR, MCA[1]_AHCLKR,
MCA[2]_ACLKX, MCA[2]_AHCLKX,
MCA[2]_ACLKR, MCA[2]_AHCLKR
McBSP
50 MHz
SYSCLK20, SYSCLK21, MCB_CLKS, MCB_CLKX, MCB_CLKR
SYSCLK22
SPI
48 MHz
SYSCLK6
SPI_SCLK
GPMC
125 MHz
SYSCLK6
I2C
up to 400 KHz
SYSCLK6
I2C[0]_SCL, I2C[1]_SCL
RTC
32.768 KHz
CLKIN32
TIMER
50 MHz
TCLKIN
HDMI
48 MHz
SYSCLK13, SYSCLK15,
SYSCLK17
PCIe/SATA
100 MHz
SERDES_CLKP, SERDES_CLKN
SD/SDIO
48 MHz
SYSCLK6
MAINPLL, DDRPLL,
27 MHz
CLKIN1
VIDEOPLL, AUDIOPLL
186
Chip Level Resources
SPRUGX9 – 15 April 2011
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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Страница 1122: ...1122 Multichannel Audio Serial Port McASP SPRUGX9 15 April 2011 Submit Documentation Feedback 2011 Texas Instruments Incorporated...
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