Peripheral Control Module

11.8.6UDC IN Max Packet Register

The UDC IN max packet register holds the value of the number of bytes the UDC core is to transmit minus one. This is done in order to accommodate maximum packets of 256 bytes, without going to a max packet field of more than 8 bits. In order to transmit packets of 256 bytes, a value of 0xff (255) should be written into the IN max packet register. At reset the IN max packet register contains 0x08, and will therefore transmit packets of length 9 bits.

Address: 0h 8000 000C

 

UDCIMP

 

Read/Write

 

Bit

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

Max Packet Size - 1

 

 

 

 

 

 

 

 

 

 

 

 

Reset

0

0

0

0

1

0

0

0

Bit

Name

Description

 

 

 

7..0

IN MaxP

IN max packet size.

 

 

8-bit field containing the value of the number of bytes to transmit minus one.

 

 

 

SA-1100 Developer’s Manual

11-67

Page 217
Image 217
Intel SA-1100 manual UDC in Max Packet Register, Address 0h 8000 000C, Udcimp