SI3220-KQ Silicon Laboratories Inc, SI3220-KQ Datasheet - Page 81

• Manufacturer Part Number: SI3220-KQ
• Description: IC SLIC/CODEC DUAL-CH 64TQFP
• Manufacturer: Silicon Laboratories Inc
• Series: ProSLIC®r

Specifications of SI3220-KQ

• Package / Case: *
• Function: Subscriber Line Interface Concept (SLIC), CODEC
• Interface: GCI, PCM, SPI
• Number Of Circuits: 2
• Voltage - Supply: 3.3V, 5V
• Current - Supply: 65mA
• Power (watts): 941mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Includes: Battery Switching, BORSCHT Functions, DTMF Generation and Decoding, FSK Tone Generation, Modem and Fax Tone Detection
• Product: Telecom
• Supply Voltage (min): 3.13 V
• Supply Current: 22 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Number Of Channels: 2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Programming the Dual ProSLIC Using the
Monitor Channel
The Dual ProSLIC devices use the monitor channel to
Transfer Status or Operating mode information to and
from the host processor. Communication with the Dual
ProSLIC should be in the following format:
Byte 1: Device Address Byte
Byte 2: Command Byte
Byte 3: Register Address Byte
Bytes 4-n: Data Bytes
Bytes n+1, N+2: EOM
Device Address Byte
The Device Address Byte identifies which device
receives the particular message. This address must be
the first byte sent to the Dual ProSLIC at the beginning
of each transmission sequence. The Device Address
Byte has the following structure:
A = 1:
A = 0:
B = 1:
B = 0:
C = 1:
C = 0:
When C = 1, bits A and B are channel enable bits.
When these bits are set to 1, the corresponding
channels receives the command in the next command
byte. The channels with corresponding bits set to 0
ignore the subsequent command byte.
Channel Identification (CID) Command
The lowest programmable bit of the Device Address
Byte, C, enables a special Channel Identification
Command to identify themselves by software. The
structure of this command is as follows:
A = 1: Channel A is the destination
A = 0: Channel B is the destination
MSB
7
1
6
0
Channel A receives the command
Channel A does not receive the command
Channel B receives the command
Channel B does not receive the command
Normal command follows
Channel identification command
5
0
4
A
B
3
2
0
1
0
Preliminary Rev. 0.91
LSB
C
0
Immediately after the last bit of the CID command is
received, the Dual ProSLIC responds with a fixed two-
byte identification code as follows:
A = 1: Channel A is the source
A = 0: Channel B is the source
Upon sending the two-byte CID command, the Dual
ProSLIC sends an EOM signal (MR = MX = 1) for two
consecutive frames. When C = 0, B must be 0 or the
Dual ProSLIC signals an abort due to an invalid
command. In this mode, only bit C is programmable.
Command Byte
The Command Byte has the following structure:
RW = 1: A Read operation is performed from the Dual
ProSLIC
RW = 0: A Write operation is performed to the Dual
ProSLIC
CMD[6:0] = 0000001: Read or Write from the Dual
ProSLIC
CMD[6:0] = 0000010-1111111: Reserved
Register Address Byte
The Register Address Byte has the following structure:
This byte contains the actual 8-bit address of the
register to be read or written.
MSB
MSB
RW
Command Byte
Command Byte
Address Byte
Address Byte
Bit
Bit
ADDRESS[7:0]
MSB
MSB
Si3220/Si3225
7
1
0
7
1
1
CMD[6:0]
6 5 4 3 2 1
0 0 A 0 0 0
0 0 0 0 0 0
6 5 4 3 2 1
0 0 A 0 0 0
0 1 1 1 1 1
LSB
LSB
LSB
LSB
0
0
0
0
0
0
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