Rainbow-electronics AT89C5122 Manuale Utente Scaricare il pdf (Pagina 166)

166

AT8xC5122/23

4202E–SCR–06/06

Reset Value = X00X 00X0b (Bit addressable)

Table 103. Interrupt Priority Low Register 1 - IPL1 (B2h) for AT8xC5122

76543210

- PUSBL - - PSCIL PSPIL - PKBDL

Bit

Number

Bit

Mnemonic Description

Reserved

The value read from this bit is indeterminate. Do not change this bit.

6 PUSBL

USB Interrupt Priority bit

Refer to PUSBH for priority level.

5 - 4 -

Reserved

The value read from this bit is indeterminate. Do not change these bits.

3PSCIL

SCI Interrupt Priority bit

Refer to PSPIH for priority level.

2PSPIL

SPI Interrupt Priority bit

Refer to PSPIH for priority level.

Reserved

The value read from this bit is indeterminate. Do not change this bit.

0 PKBL

Keyboard Interrupt Priority bit

Refer to PKBDH for priority level.

1 2 ... 161 162 163 164 165 166 167 168 169 170 171 ... 212 213

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Rainbow-electronics AT89C5122 Manuale Utente Pagina 166