6

SL1935

Table 5. Charge pump current

Table 6. Baseband path select

Table 4. Test modes

Note: * Clocks need to be present on crystal and RF inputs to enable charge pump test modes and to

toggle status byte bit FL.

Table 7. Buffered crystal

reference output select

Table 8. Local oscillator select

T2

0

0

0

0

1

1

1

1

T1

0

0

1

1

0

0

1

1

T0

0

1

0

1

0

1

0

1

Test mode description

Normal operation

Charge pump sink* (status byte FL set to logic '0')

Charge pump source* (status byte FL set to logic '0')

Charge pump disabled* (status byte FL set to logic '1')

Normal operation and port P0 = Fpd/2

Charge pump sink* (status byte FL set to logic '0'. Port P0 = Fcomp)

Charge pump source* (status byte FL set to logic '0'. Port P0 = Fcomp)

Charge pump disabled* (status byte FL set to logic '1'. Port P0 = Fcomp)

0

0

1

1

0

1

0

1

min

+-116

+-247

+-517

+-1087

Current in

µA

typ

+-155

+-330

+-690

+-1450

max

+-194

+-412

+-862

+-1812

C0

C1

0

1

Filter drive

output

OFIB

OFIA

Baseband

amp input

IFIB

IFIA

Filter drive

output

OFQB

OFQA

Baseband

amp input

IFQB

IFQA

BS

I Channel

Q Channel

Path Selected

RE

0

1

BUFREF output

Disabled, high impedance

Enabled

VS

0

1

Local oscillator selected

VCOV

VCOS