Atmel AT85DVK-07 Especificaciones descargar pdf (Pagina 212)

212

AT85C51SND3Bx

7632A–MP3–03/06

Reset Value = 1000 0000b

Reset Value = 0000 0000b

3-0 -

Reserved

The value read from these bits is always 0. Do not set these bits.

Table 233. PSISTH Register

PSISTH (1.ACh) – PSI Host Status Register

7 6 5 4 3 2 1 0

PSHBSY PSSTH6 PSSTH5 PSSTH4 PSSTH3 PSSTH2 PSSTH1 PSSTH0

Bit

Number

Bit

Mnemonic

Description

7 PSHBSY

Interface Busy Flag

Host Access (Read with SA0 = H)

Copy of the PSBSY flag.

Software Access

Always returned as logic 0.

Can not be written by software.

6-0 PSSTH6:0

7-bit Host Status Data

Set by software to report status to the host.

Table 234. PSIDAT Register

PSIDAT (1.AFh) – PSI Data Register

7 6 5 4 3 2 1 0

PSD7 PSD6 PSD5 PSD4 PSD3 PSD2 PSD1 PSD0

Bit

Number

Bit

Mnemonic

Description

7-0 PSD7:0

Data Bits

Reading this register returns the data written by the host in the FIFO.

Writing this register set data in the FIFO read later by the host.

Bit

Number

Bit

Mnemonic Description

1 2 ... 207 208 209 210 211 212 213 214 215 216 217 ... 262 263

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