NEC switch - page 46

CHAPTER 3 CPU ARCHITECTURE

User’s Manual U12978EJ3V0UD

Table 3-2. Special Function Register List (2/3)

Address Special Function Register (SFR) Name Symbol R/W Manipulatable Bit Unit After Reset

1 Bit 8 Bits 16 Bits

FF62H Token packet receive result store regis ter TRXRSL R/W √√—00H

FF63H Data/handshake PID compare register DIDCMP W —√—C3H

FF64H Data/handshake packet receive byte

number counter

DRXCON —√—18H

FF65H Data/handshake packet receive result store

DRXRSL R/W √√—00H

FF66H Data/handshake packet receive mode

URXMOD √√—

FF67H Packet receive status regis ter RXSTAT —√—

FF68H Data packet transmit byte number count er 0 DTXCO0 W —√—20H

FF69H Data packet transmit byte number count er 1 DTXCO1 —√—30H

FF6AH Remote wakeup control register REMWUP R/W √√—08H

FF6BH Transmit/receive pointer USBPOW R —√—00H

FF6CH USB timer start reservation control register USBTCL R/W √√—01H

FF6DH USB receiver enable register USBMOD √√—00H

FF72H Serial operation mode register 10 CSIM10 √√—

FFA1H Transmit data PID bank 0 USBTD0 W —√—Undef ined

FFA2H Transmit data bank 0 address 00 USBT00 —√—

FFA3H Transmit data bank 0 address 01 USBT01 —√—

FFA4H Transmit data bank 0 address 02 USBT02 —√—

FFA5H Transmit data bank 0 address 03 USBT03 —√—

FFA6H Transmit data bank 0 address 04 USBT04 —√—

FFA7H Transmit data bank 0 address 05 USBT05 —√—

FFA8H Transmit data bank 0 address 06 USBT06 —√—

FFA9H Transmit data bank 0 address 07 USBT07 —√—

FFABH Trans mit data PID bank 1 USBTD1 —√—

FFACH Transmit data bank 1 addres s 10 USBT10 —√—

FFADH Transmit data bank 1 addres s 11 USBT11 —√—

FFAEH Trans mit data bank 1 address 12 USBT12 —√—

FFAFH Transmit data bank 1 address 13 USBT13 —√—

FFB0H Transmit data bank 1 address 14 USBT14 —√—

FFB1H Transmit data bank 1 address 15 USBT15 —√—

FFB2H Transmit data bank 1 address 16 USBT16 —√—

FFB3H Transmit data bank 1 address 17 USBT17 —√—

FFB5H Receive token PID USBRTP R —√—00H

FFB6H Receive token address L USBRAL —√—

FFB7H Receive token address H USBRAH —√—

FFE0H Interrupt request flag register 0 IF0 R/W √√—

FFE1H Interrupt request flag register 1 IF1 √√—

FFE4H Interrupt mask flag register 0 MK0 √√—FFH

FFE5H Interrupt mask flag register 1 MK1 √√—