TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 98

no-image

TX4939XBG-400

Manufacturer Part Number
TX4939XBG-400
Description
Manufacturer
Toshiba
Datasheet

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TX4939XBG-400
Manufacturer:
NSC
Quantity:
872
Part Number:
TX4939XBG-400
Manufacturer:
TOSHIBA
Quantity:
10 440
Part Number:
TX4939XBG-400
Manufacturer:
XILINX
0
Part Number:
TX4939XBG-400
Manufacturer:
TOSHIBA/东芝
Quantity:
20 000
CG
5.3.2. Source Clock Generation
There are several method provided to generate source clock. One of method described in Table 5-1 should be chosen
based on the requirement of source clock. The jitter value will be notified after sample evaluation.
The Audio Clock Generator generates either 451,584,000 Hz or 338,688,000 Hz Clock as source clock (F
451,584,000 Hz clock is for Fs*512 or Fs*256 as “Over Sampling Clock (F
Table 5-2 describes those relations.
Rev. 3.1 November 1, 2005
MSTCLK2
20,000,000 Hz
15,000,000 Hz
22,579,200 Hz
Note 1
Note 1
451,584,000 Hz
338,688,000 Hz
F
F
SOURCE
SOURCE
Initial Version of TX4939 does not support this function.
Method
Fractional N PLL
Integer N PLL
Fractional N PLL
Integer N PLL
Simple X20 Multiplier
Simple X15 Multiplier
Divide
Divide
147
147
147
147
147
147
245
147
147
147
147
147
147
245
10
20
10
20
Table 5-2 Relation between source clock and result frequency
Table 5-1 Methods for Source Clock Generation
Divide
Divide
12
24
12
24
1
1
2
4
6
8
1
1
1
2
4
6
8
1
F
451,584,000 Hz
451,584,000 Hz
338,688,000 Hz
338,688,000 Hz
451,584,000 Hz
338,688,000 Hz
SOURCE
Multiply
Multiply
32
32
32
32
32
32
32
32
32
32
32
32
1
1
8
1
1
8
5-4
COMMENT (Issues)
(1) Jitter generated by Fractional PLL.
(2) Frequency Error (-11.2 PPM).
(1) Jitter generated by Very High Frequency Multiplier.
(2) Frequency Error (-11.2 PPM)
(1) Jitter generated by Fractional PLL.
(2) Frequency Error (-11.2 PPM).
(1) Jitter generated by Very High Frequency Multiplier.
(2) Frequency Error (-11.2 PPM)
(1) Clean Source Clock.
(2) Extra Crystal
(1) Clean Source Clock.
(2) Extra Crystal
45,158,400 Hz
22,579,200 Hz
49,152,000 Hz
24,576,000 Hz
16,384,000 Hz
12,288,000 Hz
14,745,600 Hz
33,868,800 Hz
16,934,400 Hz
36,864,000 Hz
18,432,000 Hz
12,288,000 Hz
11,059,200 Hz
8,192,000 Hz
4,096,000 Hz
9,216,000 Hz
6,144,000 Hz
3,072,000 Hz
F
F
OS
OS
OS
), and 338,688,000 Hz is for Fs*768 or Fs*384.
Note 1
Note 1
Fs*512
Fs*768
88,200 Hz
44,100 Hz
96,000 Hz
48,000 Hz
32,000 Hz
24,000 Hz
16,000 Hz
44,100 Hz
22,050 Hz
48,000 Hz
24,000 Hz
16,000 Hz
12,000 Hz
Toshiba RISC Processor
8,000 Hz
8,000 Hz
4,000 Hz
Baud rate Clock
Baud rate Clock
SOURCE
Fs*256
Fs*384
176,400 Hz
192,000 Hz
88,200 Hz
96,000 Hz
64,000 Hz
48,000 Hz
32,000 Hz
16,000 Hz
88,200 Hz
44,100 Hz
96,000 Hz
48,000 Hz
32,000 Hz
24,000 Hz
16,000 Hz
TX4939
). The
8,000 Hz
5
5
5
5

Related parts for TX4939XBG-400