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부품번호 | MK1493-02A 기능 |
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기능 | Networking/pci Clock Generator | ||
제조업체 | Integrated Circuit System | ||
로고 | |||
MK1493-02A
Networking/PCI Clock Generator
Description
The MK1493-02A is a general purpose clock generator
that provides an integrated clocking solution for
PCI/Networking applications. It provides two pairs of
differential CPU clocks, four PCI clocks, seven PCI_X
clocks, two reference clocks, additional clock selectable
from REF/50 MHz, and six pairs of SSTL2 DDR at
2.5 V. All complementary outputs operate only from
a 2.5 V power supply.
Input/Output Features
• Packaged in 56-pin TSSOP package
• 2 - Pairs of differential CPU clocks (differential
current mode)
• 4 - PCI @ 3.3 V
• 7 - PCI_X @ 3.3 V
• 2 - REF @ 3.3 V, Fixed
• 6 - Pairs of differential SSTL2 DDR @ 2.5 V
• 1 - REF/50 MHz, selectable
• Spread spectrum for EMI control
• Supports SMBUS index read/write and blocks
read/write operations
• Uses external 25 or 50 MHz crystal or clock
• CPU output jitter <125 ps
• PCI cycle to cycle output jitter <250 ps
• DDR cycle to cycle output jitter <150 ps
Block Diagram
PLL2
50MHz/REF2
X1
External capacitor
required with crystal for
accurate timing of clock
XTAL
OSC
2 REF(0:1)
X2
PLL1
Spread
Spectrum
ww OE
w FREQSEL
FS (3:0)
.D SDATA
SCLK
a CLK_STOPB
ta PCI_STOPB
S SSEN
4
Control
Logic
Config.
Reg.
CPU
Divider
PCI
Divider
Stop
Stop
Delay
Delay
AGP
Divider
DDR
Divider
Stop
Stop
Delay
Delay
2
2
CPUCLKT (1:0)
CPUCLKC (1:0)
7 PCI_XCLK (6:0)
4 PCI (3:0)
6
6
DDRT (5:0)
DDRC (5:0)
IREF
heet4UMDS 1493-02A C
1
Revision 020204
.comIntegrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
MK1493-02A
Networking/PCI Clock Generator
Pin Pin Pin
Name
Type
Pin Description
37
DDRT3
Output True clock output of DDRT3.
38
DDRC2
Output Complementary clock output of DDRT2.
39
DDRT2
Output True clock output of DDRT2.
40
VDDDR1
Power Power supply for DDR clocks 2.5 V only for complementary outputs.
(Can use 3.3 V supply for single ended outputs)
41
VSSDR1
Power Ground for DDR clocks.
42
DDRC1
Output Complementary clock output of DDRT1.
43
DDRT1
Output True clock output of DDRT1.
44
DDRC0
Output Complementary clock output of DDRT0.
45
DDRT0
Output True clock output of DDRT0.
46
VDDDR0
Power Power supply for DDR clocks 2.5 V only for complementary outputs).
(Can use 3.3 V supply for single ended outputs)
47
VSSDR0
Power Ground for DDR clocks.
48
CPUC1
Output Complementary CPU clock output.
49
CPUT1
Output True CPU clock output.
50
VDDCPU
Power Power supply for CPU Clocks 3.3 V.
51
VSSCPU
Power Ground for CPU clocks.
52
CPUC0
Output Complementary CPU clock output.
53
CPUT0
Output True CPU clock output.
54 OE Input Enables all outputs when high, tri-state outputs when low. Pull-up.
55
IREF
Output A precision resistor connected to ground establishes the external reference current.
56
VSSAND
Power Analog and digital ground power supply.
MDS 1493-02A C
4
Revision 020204
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
4페이지 Byte 1: Output Enable Register
(1 = enable, 0 = tristate)
Bit Pin # PUP
Bit7 -
X
Bit6 49, 48
1
Bit5 53, 52
1
Bit4 25
X
Bit3 24
X
Bit2 23
X
Bit1 22
X
Bit0 21
X
RESERVED
CPUT/C1
CPUT/C0
SSEN Read back
FS3 Read back
FS2 Read back
FS1 Read back
FS0 Read back
Byte 2: Output Enable Register
(1 = enable, 0 = tristate)
Bit Pin # PUP
Bit7 -
X
Bit6 27
1
Bit5 26
1
Bit4 25
1
Bit3 24
1
Bit2 23
1
Bit1 22
1
Bit0 21
1
RESERVED
PCI_X6
PCI_X5
PCI_X4
PCI_X3
PCI_X2
PCI_X1
PCI_X0
Byte 3: Output Enable Register
(1 = enable, 0 = tristate)
Bit Pin # PUP
Bit7 42, 43, 44, 45
1
Bit6 36, 37, 38, 39
1
Bit5 30, 31, 32, 33
1
Bit4 -
-
Bit3 16
1
Bit2 15
1
Bit1 14
1
Bit0 13
1
DDRT/C (0:1)
DDRT/C (2:3)
DDRT/C (4:5)
RESERVED
PCI3
PCI2
PCI1
PCI0
MK1493-02A
Networking/PCI Clock Generator
Description
Description
Description
MDS 1493-02A C
7
Revision 020204
Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
7페이지 | |||
구 성 | 총 24 페이지수 | ||
다운로드 | [ MK1493-02A.PDF 데이터시트 ] |
당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는 |
구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
MK1493-02A | Networking/pci Clock Generator | Integrated Circuit System |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |