Silicon Laboratories SI4421 Manuel d'utilisateur télécharger pdf (Page 34)

Si4702/03-C19

34 Rev. 1.1

Reset value = 0x0000

BitD15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0

Name BLERB[1:0] BLERC[1:0] BLERD[1:0] READCHAN[9:0]

Type RRR R

Bit Name Function

15:14 BLERB[1:0] RDS Block B Errors.

00 = 0 errors requiring correction.

01 = 1–2 errors requiring correction.

10 = 3–5 errors requiring correction.

11 = 6+ errors or error in checkword, correction not possible.

Available only in RDS Verbose mode (RDSM = 1).

Refer to “4.4. RDS/RBDS Processor and Functionality”.

13:12 BLERC[1:0] RDS Block C Errors.

00 = 0 errors requiring correction.

01 = 1–2 errors requiring correction.

10 = 3–5 errors requiring correction.

11 = 6+ errors or error in checkword, correction not possible.

Available only in RDS Verbose mode (RDSM = 1).

Refer to “4.4. RDS/RBDS Processor and Functionality”.

11:10 BLERD[1:0] RDS Block D Errors.

00 = 0 errors requiring correction.

01 = 1–2 errors requiring correction.

10 = 3–5 errors requiring correction.

11 = 6+ errors or error in checkword, correction not possible.

Available only in RDS Verbose mode (RDSM = 1).

Refer to “4.4. RDS/RBDS Processor and Functionality”.

9:0 READCHAN[9:0] Read Channel.

If BAND 05h[7:6] = 00, then Freq (MHz) = Spacing (MHz) x Channel + 87.5 MHz.

If BAND 05h[7:6] = 01, BAND 05h[7:6] = 10, then

Freq (MHz) = Spacing (MHz) x Channel + 76 MHz.

READCHAN[9:0] provides the current tuned channel and is updated during a seek

operation and after a seek or tune operation completes. Spacing and channel are set

with the bits SPACE 05h[5:4] and CHAN 03h[9:0].

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Silicon Laboratories SI4421 Manuel d'utilisateur Page 34