PBL40215 Просмотр технического описания (PDF) - Ericsson

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PBL40215

RF Transceiver circuit for the Digital Enhanced Cordless Telecommunications (DECT) system

Ericsson  

PBL 402 15

Pin Descriptions (cont.):

Pin number

Name

8

9

10

VCCVCO

Function

Not connected

Not connected

Voltage supply to the VCO

11

VTUNE

Tuning voltage input for the VCO

Schematic in/output of the pin

N/C

Clamp to GndVCO

VCCVCO

VTUNE

GndVCO

12

GndVCO

Ground connection to the VCO

A diode to GndCP and GndFM

13

GndFM

Ground connection to the FM discriminator section.

VCCFM

14

DTX

Tx data input for either analog or logic signal.

DTX

GndFM

VCCFM

15

MOD

Apply modulation. The PLL is set into open loop

MOD

condition and modulation is applied to the VCO.

GndFM

VCCFM

16

SHOLD

Slice level hold logic input. (In Tx mode this input

SHOLD

may also act as the MOD pin).

GndFM

VCCFM

17

DRX

Rx data output of FM discriminator for either analog

or logic signal.(In standby mode outputs lock detect)

DRX

GndFM

VCCFM

18

DSL

Data slice level output.

DSL

GndFM

19

VCCFM

Voltage supply to the FM discriminator section.

Clamp to GndFM

VCCRSSI

20

RSSI

RSSI output of limiting strip detector chain.

RSSI

21

VCCRSSI

Voltage supply to the RSSI section.

GndRSSI

Clamp to GndRSSI

VCCRSSI

22

CAP+

External stabilising capacitors for limiting strip

DC input offset correction loop.

23

CAP-

CAP+/CAP-

Both inputs alike

GndRSSI

Bias

Bias

4

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