Huawei MU509 - JTAG Interface Compatibility Design; Detailed Interface Differences

HUAWEI 30 mm × 30 mm LGA Module
Hardware Migration Guide
LGA Interface Differences
Issue 08 (2016-12-12)
HUAWEI Proprietary and Confidential
Copyright © HUAWEI Technologies Co., Ltd.
39
Figure 2-19 Recommended power circuit of MU509/MU609/ME209u-
526/ME909u/MU709/ME909s module
Figure 2-20 Recommended power circuit of MC509 module
Module
(DCE)
VBAT
VBAT
220 μF
10 μF
100 nF
2.8 JTAG Interface Compatibility Design
2.8.1 Detailed Interface Differences
Please note that JTAG level (CMOS 2.6 V) of MC509 is different from JTAG level
(CMOS 1.8 V) of MU509/MU609/ME209u-526/ME909u/MU709/ME909s.
Table 2-15 Differences of the JTAG signal
Pin
No.
Interface
Name
MC509
MU509
MU609
ME209u-
526
ME909u
MU709
ME909s
30
JTAG
JTAG_TMS
CMOS 2.6 V
CMOS 1.8 V
36
JTAG_TRST
_N
42
JTAG_TCK