Datasheet

71M6521DE/DH/FE Data Sheet
Rev 3 Page: 47 of 107
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] Mode Function
0
Analog
DGND
1
Analog
Reserved
2
Analog
DGND
3-5
Analog
Reserved
6
Analog
VBIAS
7
Analog
Not used
8-0x0F
--
Reserved
0x10 – 0x13
--
Not used
0x14
Digital
RTM (Real time output from CE)
0x15
Digital
WDTR_EN (Comparator 1 Output AND V1LT3)
0x16 – 0x17
Not used
0x18
Digital
RXD (from Optical interface, w/ optional inversion)
0x19
Digital
MUX_SYNC
0x1A
Digital
CK_10M (10MHz clock)
0x1B
Digital
CK_MPU (MPU clock)
0x1C
--
Reserved
0X1D
Digital
RTCLK (output of the oscillator circuit, nominally 32,786Hz)
0X1E
Digital
CE_BUSY (busy interrupt generated by CE, 396µs)
0X1F Digital
XFER_BUSY (transfer busy interrupt generated by CE,
nominally every 999.7ms)
Table 59: TMUX[4:0] Selections