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TMC2005 データシート(PDF) 6 Page - SMSC Corporation

部品番号 TMC2005
部品情報  5 Port HUB Controller Device
PDF  32 Pages
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メーカー  SMSC [SMSC Corporation]
ホームページ  http://www.smsc.com
Logo SMSC - SMSC Corporation

TMC2005 データシート(HTML) 6 Page - SMSC Corporation

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SMSC DS – TMC2005
Page 6
Rev. 10/24/2000
DESCRIPTION OF PIN FUNCTIONS
QFP PIN
NO.
NAME
INPUT/
OUTPUT
DESCRIPTION
1
TXENB1
OUTPUT
Port B-1 TX output to media transceiver
2
NC1
Reserved. It should be open
3
SE
INPUT
Port EXT. Polar assignment for EXTRX input
(0:active HI 1:active LO)
Pull-up
4
NC2
Reserved. It should be open
5
LE
INPUT
Port EXT. Polar assignment for EXTRX input
(0:active LO 1:active HI)
Pull-up
6
EXTRX
INPUT
Port EXT. RX-Data input from media transceiver
Pull-up
7
ME
INPUT
Port EXT. Output mode assignment of EXTTX
(0:pulse output 1:TX enable output)
Pull-up
8
VSS1
Ground
9
EXTTX
OUTPUT
Port EXT. Output to media transceiver
10
VDD1
Power Supply
11
CKO
OUTPUT
Clock Output
12
VSS2
Ground
13
CKM2
INPUT
Network Speed (data rate) setting
Pull-up
14
CKM1
INPUT
Network Speed (data rate) setting
Pull-up
15
CKM0
INPUT
Network Speed (data rate) setting
Pull-up
16
RXFLT
INPUT
Test Pin. It should be open
Pull-up
17
nPLLTST
INPUT
Test Pin for PLL. Must always connect to VDD
18
VDD2
Power Supply
19
XTLI
INPUT
X’tal input/External clock input
20
XTLO
OUTPUT
X’tal output
21
VSS4
Ground
22
VDD4
Power Supply
23
VDD3
Power Supply
24
AVDD
Analog Power Supply
25
RO
OUTPUT
VCO output for internal PLL
26
LP
OUTPUT
Connection pin to loop filter for internal PLL
27
AGS
INPUT
Analog sense pin for internal PLL
28
AVSS
Analog Ground
29
VSS3
Ground
30
VSS5
Ground
31
nEXTOD
INPUT
Port EXT. Open-drain mode (0:open-drain
output 1:normal output)
Pull-up
32
nMBE
INPUT
Port EXT. Noise cut (0:on 1:off)
Pull-up
33
nMBB
INPUT
Port EXT. A0/A1 Noise cut (0:on 1:off)
Pull-up
34
nMBA
INPUT
Port B0/B1 Noise cut (0:on 1:off)
Pull-up
35
nBJE
INPUT
Port EXT. Jitter correct mode (0: big jitter mode
1:normal mode)
Pull-up
36
nBJB
INPUT
Port A0/A1 Jitter correct mode (0: big jitter mode
1:normal mode)
Pull-up
37
nBJA
INPUT
Port B0/B1 Jitter correct mode (0:big jitter mode
1:normal mode)
Pull-up
38
VSS6
Ground
39
nRST
INPUT
Internal reset signal (active low)
Pull-up
40
nCKOEN
INPUT
Enable of CKO output
Pull-up
41
VDD5
Power Supply
42
nP1BAK
OUTPUT
nPULSE1 output (for backplane mode)
43
nPULSE2
OUTPUT
nPULSE2 output (for normal mode)
44
nPULSE1
OUTPUT
nPULSE1 output (for normal mode)
45
VSS7
Ground
46
RXINA0
INPUT
Port A-0 RX-data input from media transceiver
Pull-up



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