W66910CD Winbond Electronics, W66910CD Datasheet - Page 71

• Manufacturer Part Number: W66910CD
• Manufacturer: Winbond Electronics

Specifications of W66910CD

• Lead Free Status / Rohs Status: Not Compliant

RA27-20 Address Bits
Used in transparent mode only. These bits are used for the second byte address comparisons.
8.2.12 B1_ch Receive Frame Byte Count Low
Value after reset: 00H
RBC7-0 Receive Byte Count
Used in transparent mode only. Eight least significant bits of the total number of bytes are in a received frame. These bits are
valid only after a RME interrupt and remain valid until the frame is acknowledge via the RACK bit.
8.2.13 B1_ch Receive Frame Byte Count High
Value after reset: 00H
LOV Message Length Overflow
Used in transparent mode only. A "1" in this bit indicates a received message
interrupt and is cleared by the RACK command.
RBC12-8 Receive Byte Count
Used in transparent mode only. Five most significant bits of the total number of bytes are in a received frame. These bits are valid
only after a RME interrupt and remain valid until the frame is acknowledge via the RACK bit.
Note: The frame length equals RBC12-0. This length is between 1 and 8191. After a RME interrupt, the number of data available
in B1_RFIFO is frame length modulus threshold.
Remainder = RBC12-0 MOD threshold
No of available data = remainder if remainder
No of available data = threshold if remainder = 0
The remainder equals RBC5-0 if threshold is 64.
8.2.14 B1_ch Transmit Idle Pattern
Value after reset: FFH
RBC7
RA27
7
7
RBC6
RA26
6
6
RBC5
RA25
LOV
5
5
RBC12
RBC4
RA24
4
4
RBC11
RBC3
RA23
3
3
0 or
B1_IDLE
RBC10
RBC2
RA22
2
2
-71 -
B1_RBCL
B1_RBCH
RBC1
RBC9
RA21
1
1
Read/Write Address 2DH
RBC0
RBC8
RA20
0
0
Read Address 2BH
Read Address 2CH
W66910 PCI ISDN S/T-Controller
8192 bytes. This bit is valid only after RME
Publication Release Date:
Data Sheet
Revision 1.0
Feb,2001