TDA8296 datasheet(48/87 Pages) NXP

48 / 87 page

TDA8296

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Product data sheet

Rev. 1 — 3 March 2011

48 of 87

NXP Semiconductors

TDA8296

Digital global standard low IF demodulator for analog TV and FM radio

3 to 0

GP2_CF[3:0] R/W

It determines how the general purpose pin GPIO2 is

configured.

0000

The GPIO2 pin is in Input mode. The input value is

stored in GP2_VAL.

0001*

The GPIO2 pin is in Open-drain mode. The output

value is determined by GP2_VAL.

0011

The GPIO2 pin is in Output mode. The PLL output

clock divided by two is delivered.

0100

1011

The GPIO2 pin is in Output mode. HVPLL signals are

delivered. The HVPLL signal is chosen according to

Table 56.

XXXX

Don’t care if I2CSW_EN = 1. Then the pad is

configured as I2C-bus feed-through.

Table 56.

HVPLL signal configuration

HVPLL_BUS bit

Signal

GPx_CF[3:0] = 1011

V_SYNC

GPx_CF[3:0] = 1010

H_SYNC

GPx_CF[3:0] = 1001

NOISE_DET

GPx_CF[3:0] = 1000

MAC_DET

GPx_CF[3:0] = 0111

FIDT

GPx_CF[3:0] = 0110

V_LOCK

GPx_CF[3:0] = 0101

F_H_LOCK

GPx_CF[3:0] = 0100

N_H_LOCK

Table 57.

GPIOREG_2 register (address 46h) bit description

Legend: * = default value.

Bit

Symbol

Access Value

Description

7 to 5

R/W

000*

reserved, must be set to logic 000

4 and 3 -

R/W

00*

not used

GP2_VAL

R/W

GP2_VAL controls the value of the pin GPIO2 when

GP2_CF[3:0] = 0001. When GP2_CF[3:0] = 0000,

GPIO2 is an input pin which value can be read

through the I2C-bus stored in GP2_VAL.

GP1_VAL

R/W

GP1_VAL controls the value of the pin GPIO1 when

GP1_CF[3:0] = 0001. When GP1_CF[3:0] = 0000,

GPIO1 is an input pin which value can be read

through the I2C-bus stored in GP1_VAL.

GP0_VAL

R/W

GP0_VAL controls the value of the pin GPIO0 when

GP0_CF[3:0] = 0001. When GP0_CF[3:0] = 0000,

GPIO0 is an input pin which value can be read

through the I2C-bus stored in GP0_VAL.

Table 55.

GPIOREG_1 register (address 45h) bit description …continued

Legend: * = default value.

Bit

Symbol

Access Value

Description

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