EZ-USB Datasheet, PDF (51/334 Pages) Cypress Semiconductor – The EZ-USB USB Integrated Circuit

2.9 SFRs
The EZ-USB family was designed to keep 8051 coding as standard as possible, to allow
easy integration of existing 8051 software development tools. The added 8051 SFR regis-
ters and bits are summarized in Table 2-2.
Table 2-2. Added Registers and Bits
8051 Enhancements SFR Addr
Function
Dual Data Pointers DPL0
0x82 Data Pointer 0 Low Addr
DPH0
0x83 Data Pointer 0 High Addr
DPL1
0x84 Data Pointer 1 Low Addr
DPH1
0x85 Data Pointer 1 High Addr
DPS
0x86 Data Pointer Select (LSB)
MPAGE
0x92 Replaces standard 8051 Port 2 for indirect
external data memory addressing
Timer 2
T2CON.6-7 0xC8 Timer 2 Control
RCAP2L 0xCA T2 Capture/Reload Value L
RCAP2H 0xCB T2 Capture/Reload Value H
T2L
0xCC T2 Count L
T2H
0xCD T2 Count H
IE.5
0xA8 ET2-Enable T2 Interrupt Bit
IP.5
0xB8 PT2-T2 Interrupt Priority Control
UART1
SCON1.0-1 0xC0 Serial Port 1 Control
SBUF1 0xC1 Serial Port 1 Data
IE.6
0xA8 ES1-SIO1 Interrupt Enable Bit
IP.6
0xB8 PS1-SIO1 Interrupt Priority Control
EICON.7 0xD8 SMOD1-SIO1 Baud Rate Doubler
Interrupts
INT2-INT5
EXIF
0x91 INT2-INT5 Interrupt Flags
EIE
0xE8 INT2-INT5 Interrupt Enables
EIP.0-3 0xF8 INT2-INT5 Interrupt Priority Control
INT6
EICON.3 0xD8 INT6 Interrupt Flag
EIE.4
0xE8 INT6 Interrupt Enable
EIP.4
0xF8 INT6 Interrupt Priority Control
WAKEUP#
EICON.4 0xD8 WAKEUP# Interrupt Flag
EICON.5 0xD8 WAKEUP# Interrupt Enable
Idle Mode
PCON.0 0x87 EZ-USB Power Down (Suspend)
Page 2-6
Chapter 2. EZ-USB CPU
EZ-USB TRM v1.9