HD4046212RFS datasheet(94/157 Pages) RENESAS

94 / 157 page

HD404629R Series

Bit

Initial value

Read/Write

Bit name

—

Not used

—

Not used

SMRB0

Undefined

SMRB1

SMRB0

Transmit clock division ratio

Prescaler output divided by 2

Prescaler output divided by 4

Serial mode register B (SMRB: $028)

SMRB1

Output level control in idle states

Low level

High level

Figure 75 Serial Mode Register B (SMRB)

Serial Data Register (SRL: $006, SRU: $007): This register has the following functions (figures 76 and

77).

 Transmission data write and shift

 Receive data shift and read

Writing data in this register is output from the SO pin, LSB first, synchronously with the falling edge of the

transmit clock; data is input, LSB first, through the SI pin at the rising edge of the transmit clock.

Input/output timing is shown in figure 78.

Data cannot be read or written during serial data transfer. If a read/write occurs during transfer, the

accuracy of the resultant data cannot be guaranteed.

Bit

Initial value

Read/Write

Bit name

Undefined

R/W

SR3

Undefined

R/W

SR2

Undefined

R/W

SR0

Undefined

R/W

SR1

Serial data register (lower digit) (SRL: $006)

Figure 76 Serial Data Register (SRL)

HD4046212RFS Datasheet(PDF) 94 Page - Renesas Technology Corp

HD4046212RFS Datasheet(HTML) 94 Page - Renesas Technology Corp

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