LTE Standard Module Series
EC21 Mini PCIe Hardware Design
EC21_Mini_PCIe_Hardware_Design 2 / 67
About the Document
Revision History
Revision Date
Author
Description
1.0
2016-06-07
Yeoman CHEN/
Frank WANG
Initial
1.1
2017-01-24
Lyndon LIU/
Rex WANG
1. Deleted description of EC21-AUTL and EC21-CT
Mini PCIe in Table 1.
2. Updated key features of EC21 Mini PCIe in Table 2.
3. Added current consumption of EC21 Mini PCIe in
Chapter 4.7.
4. Updated mechanical dimensions of EC21 Mini PCIe
in Figure 15.
5. Updated conducted RF output power in Table 16.
6. Updated conducted RF receiving sensitivity of
EC21-A in Table 18.
7. Added conducted RF receiving sensitivity of
EC21-KL in Table 21.
8. Added conducted RF receiving sensitivity of
EC21-J in Table 22.
1.2
2019-04-30
Woody WU/
Nathan LIU/
Frank WANG
1. Added new variants EC21-EU Mini PCIe/EC21-EC
Mini PCIe and related information.
2. Added pin definition and description of pin 44 in
Figure 2 and Table 4.
3. Updated mechanical dimensions in Figure 18.
4. Added USIM_PRESENCE in (U)SIM interface and
updated the reference circuit in Chapter 3.4.
5. Updated reference circuit of USB interface in
Chapter 3.5.
6. Modified description of W_DISABLE# signal in
Chapter 3.8.3.
7. Modified description of LED_WWAN# signal in
Chapter 3.8.5.
