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10. Clocks, Resets and Power-up Options > Clocks
204
Tsi574 User Manual
June 6, 2016
Integrated Device Technology
www.idt.com
10.1.1
Clocking Architecture
The Tsi574 device relies on the reference clock (S_CLK_p/n) to generate most clocks inside device.
S_CLK_p/n is fed into each SerDes. On the receive side, each SerDes recovers clocks from the data
stream. In 4x mode, four different synchronous clocks are extracted (RXCLKA..D). In 1x mode, either
one (RXCLKA) or two (RXCLKA..B) clocks are recovered. On the transmit side, the clock (TX_CLK)
is derived from the SerDes. An extra clock (SYS_CLK) is also sourced from the SerDes to the MAC.
The S_CLK_p/n signal is also an input to the Switch Fabric and internal registers.
Figure 46: Tsi574 Clocking Architecture
I
2
C_SCLK
pin
pin
pin
P_CLK
S_CLK_P/N
I
2
C
Internal
registers
and bus
Serial Port 0
clk gen
Serial Port 6
clk gen
Serial Port 0
logic
Serial Port 1
logic
Serial Port 0
SerDes
Serial Port 6
logic
Serial Port 7
logic
Serial Port 6
SerDes
Internal Switching
Fabric
rxclka
rxclkb
rxclkc
rxclkd
txclk
rxclka
rxclkb
rxclkc
rxclkd
txclk
Содержание IDT Tsi574
Страница 1: ...IDT Tsi574 Serial RapidIO Switch User Manual June 6 2016 Titl...
Страница 20: ...About this Document 20 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 34: ...1 Functional Overview JTAG Interface 34 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 100: ...4 Internal Switching Fabric Packet Queuing 100 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 224: ...11 Signals Pinlist and Ballmap 224 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 490: ...B Clocking P_CLK Programming 490 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...
Страница 512: ...Index 512 Tsi574 User Manual June 6 2016 Integrated Device Technology www idt com...