w6692 Winbond Electronics Corp America, w6692 Datasheet - Page 56

• Manufacturer Part Number: w6692
• Description: Pci Bus Isdn S/t-controller
• Manufacturer: Winbond Electronics Corp America

T1MD
CNT6-0
layer 1 is not activated, a C/I command "ECK" must be issued in addition to the STT1 command to start the timer.
8.1.6 Interrupt Status Register
Value after reset : 00H
D_RMR
D_RME
length is obtained from D_RBCH + D_RBCL registers. The length of data in the D_RFIFO equals:
D_XFR
XINT1
XINT0
This bit indicates that the transmit FIFO is ready to accept data. Up to 64 bytes of data can be written into the D_XFIFO.
D_RMR
The last part of a frame with length > 64 bytes or a whole frame with length
0 = Single mode: The timer counts once and generates a TEXP interrupt when expires.
1 = Periodical mode: The timer counts periodically and generates an interrupt at each expiration.
The expiration time is defined as:
This register can be read only after the timer has been started. The read value indicates the timer's current count value. In case
A 64-byte data is available in the D_RFIFO. The frame is not complete yet.
An D_XFR interrupt is generated in the following cases :
This bit indicates that level change occurs at XINTIN1 pin. Both positive and negative edges will cause an interrupt.
This bit indicates that level change occurs at XINTIN0 pin. Both positive and negative edges will cause an interrupt.
T1 = CNT[6:0] * 0.1 second
data length = RBC5-0
data length = 64
- After an XMS command, when
- After an XMS together with an XME command is issued, when the whole frame has been transmitted
- After an XRST command
- After hardware reset
7
Timer1 Mode
XINTIN1 Interrupt
XINTIN1 Interrupt
D_ch Transmit FIFO Ready
Count Value
D_ch Receive Message End
D_ch Receive Message Ready
D_RME
6
D_XFR
5
if RBC5-0
if RBC5-0 =0
XINT1
64 bytes of XFIFO is empty
4
0
ISTA
XINT0
3
-56 -
Read_clear
D_EXI
2
B1_EXI
1
W6692 PCI ISDN S/T-Controller
64 bytes has been received. The whole frame
Publication Release Date:
Address 14H/05H
B2_EXI
0
Preliminary Data Sheet
Sep 30, 1999
Revision 0.9