VR4102 datasheet(476/701 Pages) NEC

476 / 701 page

CHAPTER 24 SIU (SERIAL INTERFACE UNIT)

476

24.2.11 SIUMS (0x0C00 0006)

Bit

D6D5

D4D3D2

Name

MSR[7]

MSR[6]

MSR[5]

MSR[4]

MSR[3]

MSR[2]

MSR[1]

MSR[0]

R/W

RTCRST

Undefined

Other resets

Undefined

Bit

Name

Function

D[7]

MSR[7]

Complement of DCD# signal

1 : High level

0 : Low level

D[6]

MSR[6]

Complement of RI signal (internal)

1 : High level

0 : Low level

D[5]

MSR[5]

Complement of DSR# input

1 : High level

0 : Low level

D[4]

MSR[4]

Complement of CTS# input

1 : High level

0 : Low level

D[3]

MSR[3]

DCD# signal change

1 : Change in DCD# signal

0 : No change

D[2]

MSR[2]

RI signal (internal) change

1 : Change in RI signal (internal)

0 : No change

D[1]

MSR[1]

DSR# signal change

1 : Change in DSR# signal

0 : No change

D[0]

MSR[0]

CTS# signal change

1 : Change in CTS# signal

0 : No change

This register indicates the current status of various control signals that are input to the CPU from a modem or

other peripheral device.

MSR[3..0] bits are cleared to 0 when they are read.

VR4102 Datasheet(PDF) 476 Page - NEC

VR4102 Datasheet(HTML) 476 Page - NEC

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL