ics1893cy-10 Integrated Device Technology, ics1893cy-10 Datasheet - Page 116

• Manufacturer Part Number: ics1893cy-10
• Description: 3.3-v 10base-t/100base-tx Integrated Phyceiver
• Manufacturer: Integrated Device Technology

9.3 Recommended Component Values *
ICS1893CY-10 Rev 1/07
VDD
Table 9-3. Recommended Component Values for ICS1893CY-10
† There are two IEEE Std 802.3 requirements that drive the tolerance for the frequency of the oscillator.
Figure 9-1. ICS1893CY-10 10TCSR and 100TCSR
Oscillator Frequency
10TCSR Resistor Value
100TCSR Resistor Value
LED Resistor Value
•
•
Clause 22.2.2.1 requires the MII TX_CLK to have an accuracy of ± 100 ppm.
Clause 24.2.3.4 is more stringent. It requires the code-bit timer to have an accuracy of 0.005% (that is, ±50 ppm).
ICS1893CY-10 Data Sheet - Release
Parameter
12
VDD
* For backward compatibility, refer to the "1893C Alternate Schematic" appnote.
Copyright © 2007, Integrated Device Technology, Inc.
Minimum
10TCSR
2.43K Ω 1%
510
–
–
–
10TCSR
13
See
All rights reserved.
Typical
Figure 9-1
2.43k
ICS1893CY-10
116
25
1k
18.2 K Ω 1%
Maximum
100TCSR
1.82K Ω 1%
10k
–
–
Chapter 9 DC and AC Operating Conditions
100TCSR
14
± 50 ppm †
Tolerance
1%
–
1%
Units
MHz
Ω
Ω
Ω