STA002 datasheet(27/43 Pages) STMICROELECTRONICS

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7. BROADCAST CHANNEL DEMULTIPLEXER

7.1 SCH REGISTER

Reg name: BRI_REG & NSC_REG

Internal address: 000H

Type: R

MSB

LSB

Description:

b7 to b4 indicate the bit rate of the BC

(BRI field in the SCH)

0000: no valid data

0001: 16Kbps

..............................

1000 : 128Kbps

1001 - 1111: RFU

b3 = 0

b2 to b0 indicate the number of service compo-

nents (NSC field in the SCH)

000: one Service Component

001: two Service Component

...............................................

111: eight Service Component

Reg name: EC_REG

Internal address: 001H

Type: R

MSB

LSB

Description:

b7 to b4 = 0000

b3 to b0 indicate the encryption strategy (Encryp-

tion Control field in the SCH)

0000: no encryption

0001: static Key

0010: ESI, common key, subscription period A

0100: ESI, broadcast channel specific key for

subscription period A

0101: ESI, broadcast channel specific key for

subscription period B

else: RFU

Reg name: AFCI1_REG

Internal address: 002H

Type: R

MSB

LSB

Description :

b7 to b5 = 000

b4 to b0 indicate the Auxiliary field content indica-

tor 1 (ACI1l field in the SCH)

00000: not used

00001: 16 bit encryption key selector

00010: RDS PI code

00011: Associated Broadcast Channel reference

(PS flag and ASP)

else: RFU

Reg name: AFCI2_REG

Internal address: 003H

Type: R

MSB

LSB

Description:

b7 : 0

b6 to b0 indicate the Auxiliary field content indica-

tor 2 (ACI2 field in the SCH)

00000: not used

00001:64 bit encryption key selector

00010: Service Label

else: RFU

Reg name: SOF_SF_REG

Internal address: 0041H

Type: R

MSB

LSB

Description:

b7 to b5 = 000

b4 indicate the ADF2 multiframe start flag (SF

field in the SCH)

1: first segment of multiframe or no multiframe

0: intermediate segment of multiframe

b3 to b0 indicate the segment offset and lenght

field (SFT field in the SCH) if SF = 1 SOLF con-

tains the total number of multiframe segments minus 1.

STA002

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