Table 410. Tcwenr Field Descriptions - STMicroelectronics SPC572L series Reference Manual

RM0400 Successive Approximation Register Analog-to-Digital Converter (SARADC) Digital Inter-
The number of bits implemented for each WSEL_CHx depends on num_watchdog
parameter:
•
If num_watchdog > 8, the number of bits implemented is 4 (WSEL_CHx[3:0])
•
If 4 < num_watchdog <= 8, the number of bits implemented is 3 (WSEL_CHx[3] is
reserved).
•
If 1 < num_watchdog <= 4, the number of bits implemented is 2 (WSEL_CHx[3:2] is
reserved).
•
If num_watchdog = 1, only 1 bit is present.
Each such nibble (WSEL_CHx) has positional correspondence to num_testch parameter
(each channel has a 1:1 nibble correspondence), so each word TCWSELRx corresponds to
eight test Channels, thus requiring total four 32-bit registers to cover all 32 test channels.
If value of any num_testch(i) is '0', the corresponding WSEL_CHx nibble is not
implemented. For the implemented nibbles, width of WSEL_CHx field within the nibble is
dependent on num_wdg parameter For e.g. if num_wdg is 4 than only two LSBs of each
WSEL_CHx are implemented and remaining two will remain unimplemented. If both nibbles
in a byte-access, all four nibbles in a halfword-access, and all eight nibbles in a word-access
are unimplemented, a transfer error is generated.
36.5.1.27 Test Channel Watchdog Enable Register (TCWENR)
The Watchdog enable registers to channel association is described in
Offset 0x424
0 1
R
W
Reset 0 0
16 17
R
W
Reset 0 0
Figure 355. Test Channel Watchdog Enable Register (TCWENR)
Field
0–31
WEN_CH[x]
Table 411. Test Channel Watchdog Enable Registers to Channel Association
2 3 4 5
0 0 0 0
18 19 20 21
0 0 0 0

Table 410. TCWENR field descriptions

Watchdog enable for channel x
0 Watchdog feature is disabled for CH[x].
1 Watchdog feature is enabled for CH[x].
Register
TCWENR
DocID027809 Rev 4
6 7 8 9
WEN_CH[x]
0 0 0 0
22 23 24 25
WEN_CH[x]
0 0 0 0
Description
Table 411.
Access: User Read/Write
10 11 12 13
0 0 0 0
26 27 28 29
0 0 0 0
Register bits 31:0
WEN_CH[127:96]
14 15
0 0
30 31
0 0
795/2058
803