tmpr4937 TOSHIBA Semiconductor CORPORATION, tmpr4937 Datasheet - Page 95

• Manufacturer Part Number: tmpr4937
• Description: 64-bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

MASTERCLK
6.
Oscillator
6.1
Clocks
TX4937 Clock Signals
signal. Table 6.1.2 shows the relationship among different clock signals when the CPU clock frequency is
266 MHz. Table 6.1.3 shows the relationship among different clock signals when the CPU clock frequency is
300 MHz. Table 6.1.4 shows the relationship among different clock signals when the CPU clock frequency is
333 MHz.
Figure 6.1.1 shows the configuration of TX4937 blocks and clock signals. Table 6.1.1 describes each clock
TX4937
CG
PLL1
×2.5
x4.5
×2
×3
×4
×4
×1
ADDR[2]
ADDR[3][1:0]
DMACKD
SIO1CKD
SIO0CKD
TM2CKD
TM1CKD
TM0CKD
ACLCKD
PCICKD
PIOCKD
CLKCTR
Figure 6.1.1 TX4937 Block and Clock Configuration
PCIDIVMODE)
ADDR[11:10]
CPUCLK
GBUSCLK
(CCFG.
1/4.5
1/5.5
1/10
1/11
1/4
1/5
1/8
1/9
PLL2
×1
1/1
1/2
1/3
1/4
1/2
6-1
ADDR[14:13]
PCICLKO
IMBUSCLK
CLKGATE
CLKGATE
Data input latch
TMR2
TMR1
TMR0
ACLC
SIO1
SIO0
TX49/H3 core
EJTAG/DSU
Chapter 6 Clocks
SDRAMC
EBUSC
DMAC
PCIC
IRC
PIO
SDCLK[3:0]
SDCLKIN
SYSCLK
PCICLKIN
PCICLK[5:0]
TCLK
SCLK
BITCLK
TCK
DCLK
PCI device
External
SDRAM
device