TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 157

• Manufacturer Part Number: TX4939XBG-400
• Manufacturer: Toshiba

Specifications of TX4939XBG-400

• Cpu Core: TX49/H4 90nm
• Clock Mhz/max Mips: 400/520
• Inst./data Cache: 32KB (4 Way)/32KB (4 Way)
• Tlb: x
• 1cycle Mac: x
• Volts (v): 1.25/2.5/3.3
• Peripherals: DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
• Companion Chip: TC86C001FG
• Package: PGBA456

Configuration
7.2.9. MCLKOSC Register
MCLKOSC Register controls PLL set-up and configuration.
Rev. 3.1 November 1, 2005
Bit Field
31:18
17
16
15:14
13:12
11:8
7:6
5
4:0
FIELD Definition
FIELD Definition
FIELD Definition
FIELD Definition
MCLKOSC
MCLKOSC
MCLKOSC
MCLKOSC
DEFAULT
DEFAULT
DEFAULT
DEFAULT
R/W
R/W
R/W
R/W
Symbol
Reserved
MFRAC
MINTL
Reserved
FS [1:0]
RS [3:0]
IS [1:0]
C2S
ND [4:0]
Description
Reserved
PLL Configuration (default value : MFRAC = 1, MINTL = 1)
{MFRAC, MINTL} defines PLL Configuration of the Audio Clock Generator.
MFRAC = 0, MINTL = 0: Audio Clock Generator is disabled
MFRAC = 0, MINTL = 1: PLL generates 451.584 MHz with "Integer N PLL" mode (CG=20 MHz)
MFRAC = 1, MINTL = 0: Reserved
MFRAC = 1, MINTL = 1: PLL generates 451.584 MHz with "Fractional N PLL" mode (CG=20 MHz)
Reserved
PLL frequency range select
This parameter has a relation ship with C2S input.
PLL Low Pass Filter R2 selection
R2 will be the value of 2.4 + RS[3:0] x 1.2 (K ohm)
PLL Charge Pump Current (Ip) select
PLL VCO Performance Select
PLL Multiply factor
Multiplier is the value of ND [4:0] + 1.
R/W
R/O
R/O
R/O
31
23
15
0
0
0
7
0
RESERVED
Table 7-10Bit Field Definitions of MCLKOSC Register
IS [1:0]
Figure 7-9 Definition of MCLKOSC Register
IS[1:0]
2’b00
2’b01
2’b10
2’b11
R/W
R/O
R/O
R/O
30
22
14
0
0
0
6
0
R/W
C2S
R/W
R/O
R/O
29
21
13
0
0
0
5
1
RESERVED
7-19
Description
Charge Pump Current will be X3 of 8 uA ( 24uA)
Charge Pump Current will be X2 of 8 uA ( 16uA)
Charge Pump Current will be X1 of 8 uA ( 8uA)
Disable Charge Pump
FS [1:0]
R/O
R/O
R/W
R/W
28
20
12
0
0
1
4
0
RESERVED
R/W
R/W
R/O
R/O
27
19
11
0
0
0
3
1
ND [4:0]
R/O
R/W
R/W
R/O
26
18
10
Toshiba RISC Processor
0
0
1
2
0
RS [3:0]
MFRAC
0xE068
R/W
R/W
R/W
R/O
25
17
0
1
9
0
1
0
MINTL
R/W
R/W
R/W
R/O
TX4939
24
16
0
1
8
0
0
1
7
7