UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 46 / 72
1. It is recommended to reserve
RC (R=22Ω, C=22pF) circuit on the PCM lines, especially for
PCM_CLK.
2. UG95 module provides a digital clock output (CLK_OUT) for an external audio codec, the CLK_OUT
function is disabled by default. When CLK_OUT is required, AT command is used to provide the
codec with a 13/26MHz clock generated from the module. Refer to
document [1]
for details. If
unused, keep this pin open.
3. A RC (e.g.
R=22Ω, C=47pF) circuit is recommended to be reserved on CLK_OUT line. If external
audio CODEC is MAX9860 or NAU8814, the RC circuit should be mounted, if it is ALC5616, then it is
not mounted.
3.14. Network Status Indication
The NETLIGHT signal can be used to drive a network status indication LED. The following tables describe
pin definition and logic level changes in different network status.
Table 15: Pin Definition of Network Indicator
Pin Name
Pin No. I/O
Description
Comment
NETLIGHT
21
DO
Indicate the module network activity
status.
1.8V power domain
Table 16: Working State of the Network Indicator
Pin Name
Status
Description
NETLIGHT
PWM (200ms High/1800ms Low)
Networks searching
PWM (1800ms High/200ms Low)
Idle&Data transfer
Always High
Voice&CSD calling
NOTES
Quectel
Confidential
