STA400A datasheet(95/117 Pages) STMICROELECTRONICS

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STA400A

b7:

Sat2 Lock indicator interrupt masked

0=disabled; 1=enabled.

b6:

Sat1 Lock indicator interrupt masked

0=disabled; 1=enabled.

b5:

MFP_CLK interrupt masked (5 msec impulse sync)

0=disabled; 1=enabled.

b4:

MFP_CLK interrupt masked (level)

0=disabled; 1=enabled.

b3:

IIC-bus illegal address masked

0=disabled; 1=enabled.

b2:

TDM interrupt masked

0=disabled; 1=enabled.

b1:

FEC interrupt masked

0=disabled; 1=enabled.

b0:

MCM interrupt masked

0=disabled; 1=enabled.

Note: bit5 and bit4 cannot be used togheter, i.e. if bit5 is used the bit4 must be masked and viceversa. If both

are enabled, bit4 will be sent to INTR pin.

IRQ1_STATUS - Interrupt Status Register

This register represents the interrupt vector when the INTR pin is activated (HIGH level active). It can be reset

after read if the bit0 (IRQ_RST_CTRL) of the CONTROL register is set to ‘1’ or a single bit can be reset directly

writing ‘0’.

b7:

Interrupt request from Sat2 lock indicator (high active);

b6:

Interrupt request from Sat1 lock indicator (high active);

b5:

Interrupt request from MFP_CLK (5 msec impulse continuos sync signal);

Bit5 is generated from the MFP_CLK and is a 432msec period signal with ~1.16% duty-cycle

(5msec/432msec); there is no need to reset bit5 by the interrupt routine.

b4:

Interrupt request from MFP_CLK (high active).

Bit4 is activated by the positive edge of the MFP_CLK and is a high level signal; the interrupt routing

must reset this bit.

b3:

Interrupt request from IIC-bus illegal address

(high active);

b2:

Interrupt request from TDM

(high active);

b1:

Interrupt request from FEC

(high active);

b0:

Interrupt request from MCM

(high active).

STATUS1 - CDEC Status Register

This register represents the interrupt vector when the INTR pin is activated (HIGH level active). It can be reset

after read if the bit0 (IRQ_RST_CTRL) of the CONTROL register is set to ‘1’ or a single bit can be reset directly

writing ‘0’.

b7-b4:

Reserved for Future Use

Type:

SingleByte - PR

Word Length:

Byte Name

Address (Hex)

Bit Map

Reset Value (Hex)

IRQ1_STATUS

0419

7-0

Type:

SingleByte - R

Word Length:

Byte Name

Address (Hex)

Bit Map

Reset Value (Hex)

STATUS1

041F

7-0

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