71M6521DE Datasheet, PDF (47/107 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521DE/DH/FE Data Sheet
Test Ports
TMUXOUT Pin: One out of 16 digital or 8 analog signals can be selected to be output on the TMUXOUT pin. The
function of the multiplexer is controlled with the I/O RAM register TMUX (0x20AA[4:0]), as shown in Table 59.
TMUX[4:0]
0
1
2
3-5
6
7
8-0x0F
0x10 – 0x13
0x14
0x15
0x16 – 0x17
0x18
0x19
0x1A
0x1B
0x1C
0X1D
0X1E
0X1F
Mode
Analog
Analog
Analog
Analog
Analog
Analog
--
--
Digital
Digital
Digital
Digital
Digital
Digital
--
Digital
Digital
Digital
Function
DGND
Reserved
DGND
Reserved
VBIAS
Not used
Reserved
Not used
RTM (Real time output from CE)
WDTR_EN (Comparator 1 Output AND V1LT3)
Not used
RXD (from Optical interface, w/ optional inversion)
MUX_SYNC
CK_10M (10MHz clock)
CK_MPU (MPU clock)
Reserved
RTCLK (output of the oscillator circuit, nominally 32,786Hz)
CE_BUSY (busy interrupt generated by CE, 396µs)
XFER_BUSY (transfer busy interrupt generated by CE,
nominally every 999.7ms)
Table 59: TMUX[4:0] Selections
Rev 2
Page: 47 of 107