Datasheet

Analog Integrated Circuit Device Data
Freescale Semiconductor 134
MC34708
Functional Block Description
SRE[1:0] 15-14 R/W RESETB 0x0
Slew rate enable
00: slow (default)
01: normal
10: fast
11: very fast
Unused 23-16 R 0x00
Not available
Table 142. Register 37, USB timing
Name Bit # R/W Reset Default Description
DEVICE_WAKE_UP[3:0] 3-0 R/W MUSBRSTB 0x0
The periodical sampling time of the ID line in the Power-Save
mode and Standby mode; the periodical time of ADC
conversion of the resistance at ID pin when RAW DATA = 0.
0000: 50 ms
0001: 100 ms
0010: 150 ms
0011: 200 ms
0100: 300 ms
KEYPRESS[3:0] 7-4 R/W MUSBRSTB 0x0
Normal key press duration
0000: 100 ms
0001: 200 ms
0010: 300 ms
...
LONG_KEYPRESS[3:0] 11-8 R/W MUSBRSTB 0x0
Long key press duration
0000: 300 ms
0001: 400 ms
0010: 500 ms
...
SWITCHING_WAIT 15-12 R/W MUSBRSTB 0x0
Waiting time before switching the analog or digital switches:
0000: 10 ms
0001: 30 ms
0010: 50 ms
...
TD 19-16 R/W MUSBRSTB 0x0
Time delay to start the powered accessory identification flow
after detecting the bus voltage
0000: 100 ms
0001: 200 ms
0010: 300 ms
0011: 400 ms
0100: 500 ms
...
1111:1600 ms
The time for no activity in the switches before entering the
Power Save mode automatically for Audio Type 1 or TTY
device
0000: 1 s
0001: 2 s
...
1001:10s
...
1111:16 s
Table 141. Register 36, GPIOLV3 Control
Name Bit # R/W Reset Default Description