
62
AT85C51SND3Bx
7632A–MP3–03/06
Reset Value = 0000 0000b
Table 75. IPH1 Register
IPH1 (0.B3h) – Interrupt Priority High Register 1
7 6 5 4 3 2 1 0
- - IPHMMC IPHNFC IPHSPI IPHSPI IPHKB IPHUSB
Bit
Number
Bit
Mnemonic
Description
7-6 -
Reserved
The value read from these bits is always 0. Do not set these bits.
5 IPHMMC
MMC/SD Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
4 IPHNFC
NFC Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
3 IPHSPI
SPI Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
2 IPHPSI
PSI Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
1 IPHKB
KBD Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
0 IPHUSB
USB Interrupt Priority Level Msb
Refer to Ta bl e 70 for priority level description.
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