Difference between revisions of "BCM2835 datasheet errata"

From eLinux.org
Jump to: navigation, search
(table p25)
(table p25)
Line 7: Line 7:
 
Let's gather those datasheet typos and errors here.  
 
Let's gather those datasheet typos and errors here.  
  
== table p25 ==
+
== p25 table==
 
The table on page 25 has the bit numbers wrong. Some bits are mentioned twice, some not at all.  
 
The table on page 25 has the bit numbers wrong. Some bits are mentioned twice, some not at all.  
  
Line 31: Line 31:
 
|-  
 
|-  
 
|}
 
|}
 +
 
== p38 typo ==
 
== p38 typo ==
  
 
harware instead of hardware (second paragraph)
 
harware instead of hardware (second paragraph)

Revision as of 04:19, 7 February 2012

BCM 2835 datasheet errata

The (partial) datasheet was published here: http://dmkenr5gtnd8f.cloudfront.net/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf

It has a couple of typos. Some more serious than others.

Let's gather those datasheet typos and errors here.

p25 table

The table on page 25 has the bit numbers wrong. Some bits are mentioned twice, some not at all.

I'm guessing it should be something like:

Bit(s) Field Name Description type reset
31:24 TX FIFO level The number of data units in the transmit data FIFO R/W 0
23:16 RX FIFO level The number of data units in the receive data FIFO. R/W 0
15:10 - Reserved, write zero, read as don’t care R/W 0
9 TX Full If 1 the transmit FIFO is full
If 0 the transmit FIFO can accept at least 1 data unit.
R/W 0
8 TX Empty If 1 the transmit FIFO is empty R/W 0
If 0 the transmit FIFO holds at least 1 data unit.
R/W 0
7 RX Empty If 1 the receiver FIFO is empty R/W 0
If 0 the receiver FIFO holds at least 1 data unit.
R/W 0
6 Busy Indicates the module is busy transferring data. R/W 0
5:0 Bit count The number of bits still to be processed. Starts with 'shift-length' and counts down. R/W 0

p38 typo

harware instead of hardware (second paragraph)