STLC5048TR STMicroelectronics, STLC5048TR Datasheet - Page 32

• Manufacturer Part Number: STLC5048TR
• Description: IC CODEC/FILTER PROGR 4CH 64TQFP
• Manufacturer: STMicroelectronics
• Type: PCM Codec/Filterr

Specifications of STLC5048TR

• Data Interface: PCM Audio Interface
• Resolution (bits): 16 b
• Number Of Adcs / Dacs: 4 / 4
• Sigma Delta: Yes
• Voltage - Supply, Analog: 3.3 V ~ 5 V
• Voltage - Supply, Digital: 3.3 V ~ 5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Register description
5.16
5.17
32/64
The checksum value is calculated every time the CKSTART instruction is performed and the
result is available after a proper delay (max 400 μs).
This register contains the checksum value calculated on the contents of the following
coefficient (each of 16 bits):
ZERO
KDF0_0 KDF0_1 KDF0_2 KDF1_0 KDF1_1 KDF1_2 KDF2_0 KDF2_1 KDF2_2 KDF3_0
KDF3_1 KDF3_2 AFE_CFF GRX0 GTX0 RFC0_0 ...... RFC0_16 XFC0_0 ...... XFC0_16
BFC0_0 ...... BFC0_25
ZFC0_0 ...... ZFC0_4 GRX1 GTX1 RFC1_0 ...... RFC1_16 XFC1_0 ...... XFC1_16
BFC1_0 ......BFC1_25 ZFC1_0 ...... ZFC1_4 GRX2 GTX2 RFC2_0 ......RFC2_16 XFC2_0
...... XFC2_16 BFC2_0 ...... BFC2_25
ZFC2_0 ...... ZFC2_4 GRX3 GTX3 RFC3_0 ...... RFC3_16 XFC3_0 ...... XFC3_16
BFC3_0 ...... BFC3_25 ZFC3_0 ......ZFC3_4
Loopback register (LOOPB)
Addr=2Ah; reset value=00h
Table 36.
●
●
●
●
When loopbacks are enabled the signal appears also at the corresponding VFRO output. It
is possible to have no signal on the VFRO output programming the GRX command to 00h in
case of digital loopback.
Transmit pre-amplifier gain register (TXG)
Addr=2Bh; reset value=00h
Table 37.
●
●
R/W
R/W
Bit7
DL3
Bit7
DL3..0=0: Normal operation
DL3..0=1: Codec #3..0 is set in digital loopback mode, this means that the receive PCM
signal applied to the programmed receive time slot is transferred to the programmed
transmit time slot.
AL3..0=0: Normal operation
AL3..0=1: Codec #3..0 is set in analog loopback mode, this means that the VFRO
signal is transferred to the VFXI input internally into the codec.
TG3..0=0: Transmit preamplifier gain ch. 3..0 = 0dB
TG3..0=1: Transmit preamplifier gain ch. 3..0 = 3.52dB
Loopback register (LOOPB) bits
Transmit pre-amplifier gain register (TXG) bits
Bit6
Bit6
DL2
1
0
Bit5
DL1
Bit5
0
1
Bit4
DL0
Bit4
1
0
TG3
Bit3
AL3
Bit3
1
1
Bit2
Bit2
TG2
AL2
0
0
AL11
TG1
Bit1
Bit1
1
1
STLC5048
TG0
Bit0
Bit0
AL0
0
1