SI3232-BQ Silicon Laboratories Inc, SI3232-BQ Datasheet - Page 85

• Manufacturer Part Number: SI3232-BQ
• Description: IC SLIC PROG DUAL-CH 64TQFP
• Manufacturer: Silicon Laboratories Inc

Specifications of SI3232-BQ

• Package / Case: *
• Function: Subscriber Line Interface Concept (SLIC)
• Interface: ISDN
• Number Of Circuits: 2
• Voltage - Supply: 3.13 V ~ 3.47 V
• Current - Supply: 28mA
• Power (watts): 280mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Product: SLIC
• Supply Voltage (min): 3.13 V
• Supply Current: 28 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Channels: 2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SBIAS: SLIC Bias Control (Register Address 8)
(Register type: Initialization/protected register bits)
Reset settings = 0xE0
Note: Bit type “P” = user-protected bits. Refer to the protected register bit section in the text of this application note.
Name
Type
Bit
3:2
1:0
Bit
7
6
5
4
OBIAS[1:0]
ABIAS[1:0]
STDBY
R/W–P
BIASEN
STDBY
SQLCH
Name
CAPB
D7
SQLCH
R/W–P
D6
Low-power Standby Status.
Writing to this bit causes temporary manual control of this bit until a subsequent on-hook
or off-hook transition.
0 = low-power mode off (i.e. Active off-hook).
1 = low-power mode on (i.e. Active on-hook).
Audio Squelch Control.
Indicates squelch of audio during the setting time set by the SPEEDUP RAM coefficient.
Writing to this bit causes temporary manual override until a speedup event occurs.
0 = Squelch off.
1 = Squelch on.
Audio Filter Capacitor Bypass.
Indicates filter capacitor pass during the setting time set by the SPEEDUP RAM coeffi-
cient. Writing to this bit causes temporary manual override until a speedup event occurs.
0 = Capacitors not bypassed.
1 = Capacitors bypassed.
SLIC Bias Enable.
Writing to this bit causes temporary manual control of SLIC bias until a subsequent on-
hook or off-hook state.
0 = SLIC bias off (i.e. Active on-hook).
1 = = SLIC bias on (i.e. Active off-hook).
SLIC Bias Level, On-Hook Transmission State.
DC bias current flowing in the SLIC circuit during on-hook transmission state. Increasing
this value increases the ability of the SLIC to withstand longitudinal current artifacts.
00 = 4 mA per lead.
01 = 8 mA per lead.
10 = 12 mA per lead.
11 = 16 mA per lead.
SLIC Bias Level, Active State.
DC bias current flowing in the SLIC circuit during the active off-hook state. Increasing this
value increases the ability of the SLIC to withstand longitudinal current artifacts.
00 = 4 mA per lead.
01 = 8 mA per lead.
10 = 12 mA per lead.
11 = 16 mA per lead.
R/W–P
CAPB
D5
BIASEN
R/W–P
Preliminary Rev. 0.95
D4
D3
OBIAS[1:0]
R/W–P
Function
D2
D1
ABIAS[1:0]
R/W–P
D0
Si3232
85