Z8E520 Datasheet, PDF (22/43 Pages) Zilog, Inc. – 1.5 MBPS USB Device Controller

Z8E520/C520
1.5 MBPS USB Device Controller
FUNCTIONAL DESCRIPTION (Continued)
Zilog
ADDR NAME
D7
D6
D5
D4
D3
D2
D1
D0
B0
PORT A
A7
A6
A5
A4
A3
A2
A1
A0
B1
PORT B
B7
B6
B5
B4
B3
B2
B1
B0
B2
ADDR
USB ADDRESS 6:0
B3 ^{SIE MODE}
SIE MODE 7:0
RS232 PS/2 USB
B4
USB CSR
SIE
POWER
FORCE _{ACTIVITY J STATE}
RESUME
EP MODE 2:0
LOW
B5 _PRIORITY
INTR
LOW
B6 _PRIORITY
MASK
DEPENDS ON EP MODE
(SEE TABLE 10)
DEPENDS ON EP MODE
(SEE TABLE 10)
B7
HIGH
PRIORITY RESUME
INTR
NAK
SENT
EP1
NAK
SENT
EP0
STALL
SENT
EP2
STALL STALL
SENT SENT
EP1
EP0
SETUP _SETUP
EP1
EP0
HIGH
B8 PRIORITY
MASK
SAME AS HIGH PROIORITY INTR
B9
EP0
CSR
ACK
STATUS
OUT
VBOSULEFATFUTEIPLRESEROVUITCED
OUT
DATA
TOGGLE
FORCE
STALL
FORCE
NAK
IN
IN
PACKET DATA
READY TOGGLE
BA
EP1/2
CSR
DEPENDS ON EP MODE
(SEE TABLE 11)
BB
EP0
COUNT
EP0 OUT COUNT 3:0
EP0 IN COUNT 3:0
BC
EP1/2
COUNT
DEPENDS ON EP MODE
(SEE TABLE 12)
BD
BE
BF
Figure 15. COMM Registers (USB Mode: B0–BF)
22
PRELIMINARY
DS97KEY2005