SAM4L Datasheet, PDF (736/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
27.9.17 HS-mode Slew Rate Register
Name:
HSSRR
Access Type:
Read/Write
Offset:
0x40
Reset Value:
0x00000000
31
30
29
28
27
26
25
24
-
-
FILTER
-
-
CLSLEW
23
22
21
20
19
18
17
16
-
-
CLDRIVEH
-
CLDRIVEL
15
14
13
12
11
10
-
-
-
-
-
-
9
8
DASLEW
7
6
5
4
3
2
1
0
-
DADRIVEL
• FILTER: Input Spike Filter Control
0: Reserved
1: HS-mode
2: Reserved
3: Reserved
• CLSLEW: Clock Slew Limit
Selects the slew limit of the TWCK output buffer in HS-mode.
• CLDRIVEH: Clock Drive Strength HIGH
Selects the pull-up drive strength of the TWCK output buffer In HS-mode.
• CLDRIVEL: Clock Drive Strength LOW
Selects the pull-down drive strength of the TWCK output buffer in HS-mode.
• DASLEW: Data Slew Limit
Selects the slew limit of the TWD output buffer in HS-mode.
• DADRIVEL: Data Drive Strength LOW
Selects the pull-down drive strength of the TWD output buffer in HS-mode.
Refer to Section 42. ”Electrical Characteristics” on page 1106 for appropriates values of these register fields.
42023C–SAM–02/2013
736