Rainbow-electronics AT89C51SND1C Manual do Utilizador descarregar pdf (Página 173)

173

AT8xC51SND1C

4109E–8051–06/03

Table 143. SSSTA Register

SSSTA (S:94h) – Synchronous Serial Status Register

Reset Value = F8h

Table 144. SSDAT Register

SSDAT (S:95h) – Synchronous Serial Data Register

Reset Value = 1111 1111b

Table 145. SSADR Register

SSADR (S:96h) – Synchronous Serial Address Register

Reset Value = 1111 1110b

76543210

SSC4 SSC3 SSC2 SSC1 SSC0 0 0 0

Bit

Number

Bit

Mnemonic Description

7:3 SSC4:0

Synchronous Serial Status Code Bits 0 to 4

Refer to Table 136 to Table 128 for status description.

2:0 0 Always 0.

76543210

SSD7 SSD6 SSD5 SSD4 SSD3 SSD2 SSD1 SSD0

Bit

Number

Bit

Mnemonic Description

7:1 SSD7:1

Synchronous Serial Address bits 7 to 1 or Synchronous Serial Data Bits 7

to 1

0SSD0Synchronous Serial Address bit 0 (R/W) or Synchronous Serial Data Bit 0

76543210

SSA7SSA6SSA5SSA4SSA3SSA2SSA1SSGC

Bit

Number

Bit

Mnemonic Description

7:1 SSA7:1 Synchronous Serial Slave Address Bits 7 to 1

0SSGC

Synchronous Serial General Call Bit

Set to enable the general call address recognition.

Clear to disable the general call address recognition.

1 2 ... 168 169 170 171 172 173 174 175 176 177 178 ... 209 210

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