DS2465 MAXIM [Maxim Integrated Products], DS2465 Datasheet - Page 14

• Manufacturer Part Number: DS2465
• Description: SHA-256 Coprocessor with 1-Wire Master Function
• Manufacturer: MAXIM [Maxim Integrated Products]

Table 7. Parameter Byte Bitmap
X = Don’t care
Bits 5:4: Target (TT). These bits specify the user memory page number (S/U = 1) to which the scratchpad data is to
be copied.
For S/U = 1, the assignments are:
Bit 3: Full or segment copy (F/S). This bit is relevant only is S/U = 1. It specifies whether the entire page is pro-
grammed or only the segment selected by SEG#. If F/S = 0, the entire page is programmed. If F/S = 1, only the selected
segment is programmed. If one block of a targeted page is write protected then the F/S bit is forced to 1.
Bits 2:0: Segment Number (SEG#). These bits are relevant only if (S/U = 1) and (F/S = 1). They specify the segment
of the selected user memory page to be programmed with scratchpad data. All codes are valid. The code 000b refers
to the first four bytes of the page, etc.
SHA-256 Coprocessor with 1-Wire Master Function
00
01
10
11
BIT 7
S/U
User page 0
User page 1
(reserved)
(reserved)
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BIT 6
X
Refer to the full data sheet for this information.
BIT 5
TT
BIT 4
BIT 3
F/S
BIT 2
BIT 1
SEG#
DS2465
BIT 0