Siemens ET7 Series Dokumentacja Pobierz pdf (Strona 73)

DSB75 Development Support Board Rev. B1 Hardware Description

Strictly confidential / Released

DSB75_hd_v08 Page 73 of 94 29.09.2005

5.2 Overview of Jumpers

Table 31: Overview of jumpers

Function Referenc

Jumper set Jumper not set

X120

Voltage that is delivered by an USB

host connected to X110 can be used as

source for the module’s USB interface,

switch S110 must be in position 3

Voltage that is delivered by an USB host is

disconnected to the module’s USB interface,

switch S110 must be in position 1 to deliver

that voltage from the 5-volt supply on the

DSB75

X121

Voltage that is delivered by an USB

host connected to X111 can be used as

source for the module’s USB interface

Voltage that is delivered by an USB host

connected to X111 cannot be used as source

for the module’s USB interface

X122 Connects BATT+ voltage to GSM

module

Disconnects BATT+ voltage from GSM

module

Jumper pins can be used for BATT+ current

measurements

X203

Enables DTR at COM1 interface Disables DTR at COM1 interface

X204 Enables receiver outputs of COM1 Disables receiver outputs of COM1

X206 Enables receiver outputs of COM2 Disables receiver outputs of COM2

X405

Disables BATT+ generation Enables BATT+ generation

X410

X411

Both jumpers set: maximal BATT+ voltage is generated (4.5 Volt)

Jumper on X410 set: nominal BATT+ voltage is generated (4.1 Volt)

Jumper on X411 set: minimal BATT+ voltage is generated (3.5 Volt)

X420

Ignition on Ignition off

X421

EMERG_RST on EMERG_RST off

X500

Enables SIM card detection Disables SIM card detection

X560

Connects signal DAC_OUT to filter

circuit

Disconnects signal DAC_OUT from filter

circuit

X561

Enables the loop back of the filtered

signal DAC_OUT_F to the ADCx_IN

signals

Filtered signal DAC_OUT_F terminates on this

jumper pin 1 (access point)

X562

Ground pins

X600 Resistor R602 (150m) shorted Resistor R602 (150m) not shorted

X710

Jumper set to pin 1 and 2: charger

circuit is supplied by external charger

interface voltage

Jumper set to pin 2 and 3: charger

circuit is supplied by internal voltage

5V0

Charger circuit is not supplied

Jumper is intended for controlling the described function from a remote device.

Jumper is intended for replacing DAC-OUT- filter by customer.

Cut the trace of the jumper at the first use (see also Figure 45).

1 2 ... 68 69 70 71 72 73 74 75 76 77 78 ... 93 94

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