STLC5048 datasheet(23/45 Pages) STMICROELECTRONICS

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STLC5048

TPA/B = These two bits are used to enable the DX outputs of the port A or/and B. According to the combination

of these two bits the enabled port will be as follows:

RPAB = 0: Port A enabled (DRA input selected)

RPAB = 1: Port B enabled (DRB input selected)

TE = 0: Transmit PCM data change on rising edge of MCLK

TE = 1: Transmit PCM data change on falling edge of MCLK

PC1-PC0 = Selection of the channel for the PCM access data via MCU.

WR = 1: Setting this bit , receive PCM data writing via MCU (after A/

µ decoding) is enabled on selected channel

and IPCM interrupt is generated every time FS signal becomes active, together to the set of the WRD bit in the

PCMCTRL register.

A data byte must be written every 125

µs, if data is not replaced the old value is inserted again but the PMW bit

is set to 1 in the PCMCTRL register.

RR = 1: Setting this bit, transmit PCM data reading (after A/

µ encoding) via MCU is enabled on selected channel

and IPCM interrupt is generated every time that data are available, together to the set of the RRD bit in the PC-

MCTRL register.

A data byte must be read every 125

µS, if data is not read the new value is written in the PCM access register

but the POW bit is set to 1 in the PCMCTRL register.

Transmit Time Slot ch #0 (DXTS0)

Addr=52h; Reset Value=00h

EN0=0:Selected transmit time slot on DX output is in H.I.

EN0=1:Selected transmit time slot on DX output is active carrying out the PCM encoded signal of VFXI0.

T06..0:Define time slot number (0 to 127) on which PCM encoded signal of VFXI0 is carried out.

If linear mode is selected (LIN=1 of CONF register) the 16 bits will be carried out as follows: the 8 most signifi-

cant bits in the programmed time slot, the 8 least significant bits in the following time slot.

Example: if T06..T00=00:

TPB

TPA

Description

Both Ports disabled

Port A enabled

Port B enabled

Both ports enabled

PC0

PC1

Description

Channel #0 selected

Channel #1 selected

Channel #2 selected

Channel #3 selected

Bit7

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

R/W

010010

EN0

T06

T05

T04

T03

T02

T01

T00

TS0

TS1

9876543210

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